/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-VariableLbe.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 [2021-03-24 17:42:15,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 17:42:15,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 17:42:15,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 17:42:15,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 17:42:15,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 17:42:15,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 17:42:15,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 17:42:15,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 17:42:15,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 17:42:15,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 17:42:15,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 17:42:15,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 17:42:15,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 17:42:15,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 17:42:15,678 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 17:42:15,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 17:42:15,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 17:42:15,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 17:42:15,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 17:42:15,698 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-VariableLbe.epf [2021-03-24 17:42:15,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 17:42:15,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 17:42:15,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 17:42:15,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 17:42:15,741 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 17:42:15,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 17:42:15,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 17:42:15,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 17:42:15,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 17:42:15,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 17:42:15,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 17:42:15,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 17:42:15,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 17:42:15,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 17:42:15,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 17:42:15,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 17:42:15,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 17:42:15,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 17:42:15,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 17:42:15,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 17:42:15,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 17:42:15,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 17:42:15,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 17:42:15,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 17:42:15,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 17:42:15,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 17:42:15,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 17:42:15,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 17:42:15,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 17:42:15,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 17:42:16,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 17:42:16,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 17:42:16,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 17:42:16,100 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 17:42:16,100 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 17:42:16,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-03-24 17:42:16,101 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-03-24 17:42:16,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 17:42:16,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 17:42:16,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 17:42:16,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 17:42:16,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 17:42:16,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 17:42:16,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 17:42:16,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 17:42:16,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 17:42:16,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/1) ... [2021-03-24 17:42:16,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 17:42:16,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 17:42:16,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 17:42:16,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 17:42:16,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (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 [2021-03-24 17:42:16,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 17:42:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 17:42:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 17:42:16,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 17:42:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 17:42:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 17:42:16,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 17:42:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 17:42:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 17:42:16,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 17:42:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 17:42:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 17:42:16,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-24 17:42:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-24 17:42:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-24 17:42:16,262 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 17:42:16,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 17:42:16,514 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 17:42:16,515 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 05:42:16 BoogieIcfgContainer [2021-03-24 17:42:16,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 17:42:16,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 17:42:16,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 17:42:16,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 17:42:16,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 05:42:16" (1/2) ... [2021-03-24 17:42:16,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfdf987 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 05:42:16, skipping insertion in model container [2021-03-24 17:42:16,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 05:42:16" (2/2) ... [2021-03-24 17:42:16,521 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-03-24 17:42:16,542 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 17:42:16,545 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 17:42:16,546 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 17:42:16,634 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 17:42:16,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 17:42:16,670 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 17:42:16,671 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 17:42:16,671 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 17:42:16,671 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 17:42:16,671 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 17:42:16,671 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 17:42:16,671 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 17:42:16,671 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 17:42:16,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-03-24 17:42:16,708 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-24 17:42:16,709 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 17:42:16,710 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. [2021-03-24 17:42:16,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-03-24 17:42:16,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-03-24 17:42:16,716 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 17:42:16,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-24 17:42:16,727 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 102 flow [2021-03-24 17:42:16,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 102 flow [2021-03-24 17:42:16,741 INFO L129 PetriNetUnfolder]: 0/39 cut-off events. [2021-03-24 17:42:16,742 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 17:42:16,742 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. [2021-03-24 17:42:16,744 INFO L142 LiptonReduction]: Number of co-enabled transitions 756 [2021-03-24 17:42:16,837 INFO L154 LiptonReduction]: Checked pairs total: 1800 [2021-03-24 17:42:16,837 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-24 17:42:16,839 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 124 [2021-03-24 17:42:16,851 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-03-24 17:42:16,851 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 17:42:16,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:16,852 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:16,853 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1219919751, now seen corresponding path program 1 times [2021-03-24 17:42:16,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:16,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427218673] [2021-03-24 17:42:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:16,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 17:42:16,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:16,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 17:42:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:16,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427218673] [2021-03-24 17:42:16,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:16,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 17:42:16,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130327057] [2021-03-24 17:42:16,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 17:42:16,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 17:42:16,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 17:42:16,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 50 [2021-03-24 17:42:16,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:16,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:16,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 50 [2021-03-24 17:42:16,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:17,021 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2021-03-24 17:42:17,021 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 17:42:17,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 39 events. 1/39 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2021-03-24 17:42:17,023 INFO L132 encePairwiseOnDemand]: 47/50 looper letters, 2 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2021-03-24 17:42:17,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 100 flow [2021-03-24 17:42:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 17:42:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 17:42:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-24 17:42:17,033 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-24 17:42:17,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:17,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,044 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 3 states and 140 transitions. [2021-03-24 17:42:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 100 flow [2021-03-24 17:42:17,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 84 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-24 17:42:17,049 INFO L241 Difference]: Finished difference. Result has 42 places, 34 transitions, 84 flow [2021-03-24 17:42:17,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2021-03-24 17:42:17,051 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2021-03-24 17:42:17,051 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 84 flow [2021-03-24 17:42:17,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:17,052 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:17,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 17:42:17,052 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1444364967, now seen corresponding path program 2 times [2021-03-24 17:42:17,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:17,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977916443] [2021-03-24 17:42:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:17,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 17:42:17,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 17:42:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:17,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977916443] [2021-03-24 17:42:17,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:17,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 17:42:17,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042411892] [2021-03-24 17:42:17,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 17:42:17,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:17,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 17:42:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 17:42:17,090 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 50 [2021-03-24 17:42:17,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:17,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 50 [2021-03-24 17:42:17,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:17,113 INFO L129 PetriNetUnfolder]: 1/39 cut-off events. [2021-03-24 17:42:17,114 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 17:42:17,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-03-24 17:42:17,114 INFO L132 encePairwiseOnDemand]: 47/50 looper letters, 2 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2021-03-24 17:42:17,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 92 flow [2021-03-24 17:42:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 17:42:17,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 17:42:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-24 17:42:17,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-24 17:42:17,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:17,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-24 17:42:17,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,129 INFO L185 Difference]: Start difference. First operand has 42 places, 34 transitions, 84 flow. Second operand 3 states and 140 transitions. [2021-03-24 17:42:17,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 92 flow [2021-03-24 17:42:17,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:17,131 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 88 flow [2021-03-24 17:42:17,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2021-03-24 17:42:17,132 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2021-03-24 17:42:17,132 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 88 flow [2021-03-24 17:42:17,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:17,132 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:17,132 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:17,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 17:42:17,132 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1813205049, now seen corresponding path program 3 times [2021-03-24 17:42:17,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:17,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207043526] [2021-03-24 17:42:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:17,311 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:17,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:17,320 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:17,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:17,340 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:17,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:17,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:17,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:17,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:17,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:17,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:17,631 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-24 17:42:17,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 17:42:17,664 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-24 17:42:17,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:17,707 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:17,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207043526] [2021-03-24 17:42:17,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:17,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:42:17,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97088481] [2021-03-24 17:42:17,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:42:17,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:42:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:42:17,714 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:17,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 88 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) [2021-03-24 17:42:17,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:17,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:17,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:19,389 INFO L129 PetriNetUnfolder]: 1083/1866 cut-off events. [2021-03-24 17:42:19,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 17:42:19,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1866 events. 1083/1866 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10375 event pairs, 540 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 3464. Up to 1397 conditions per place. [2021-03-24 17:42:19,404 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 52 selfloop transitions, 94 changer transitions 2/164 dead transitions. [2021-03-24 17:42:19,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 164 transitions, 644 flow [2021-03-24 17:42:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-24 17:42:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-03-24 17:42:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 929 transitions. [2021-03-24 17:42:19,408 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6193333333333333 [2021-03-24 17:42:19,408 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 929 transitions. [2021-03-24 17:42:19,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 929 transitions. [2021-03-24 17:42:19,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:19,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 929 transitions. [2021-03-24 17:42:19,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 30.966666666666665) internal successors, (929), 30 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 50.0) internal successors, (1550), 31 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,416 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 50.0) internal successors, (1550), 31 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,416 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 88 flow. Second operand 30 states and 929 transitions. [2021-03-24 17:42:19,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 164 transitions, 644 flow [2021-03-24 17:42:19,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 164 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:19,422 INFO L241 Difference]: Finished difference. Result has 85 places, 129 transitions, 597 flow [2021-03-24 17:42:19,422 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=597, PETRI_PLACES=85, PETRI_TRANSITIONS=129} [2021-03-24 17:42:19,423 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2021-03-24 17:42:19,423 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 129 transitions, 597 flow [2021-03-24 17:42:19,423 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) [2021-03-24 17:42:19,423 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:19,423 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:19,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 17:42:19,423 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 604494985, now seen corresponding path program 4 times [2021-03-24 17:42:19,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:19,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243646509] [2021-03-24 17:42:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:19,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 17:42:19,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 17:42:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:19,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243646509] [2021-03-24 17:42:19,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:19,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 17:42:19,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994707331] [2021-03-24 17:42:19,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 17:42:19,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:19,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 17:42:19,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 17:42:19,445 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 50 [2021-03-24 17:42:19,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 129 transitions, 597 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:19,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 50 [2021-03-24 17:42:19,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:19,509 INFO L129 PetriNetUnfolder]: 377/788 cut-off events. [2021-03-24 17:42:19,509 INFO L130 PetriNetUnfolder]: For 503/519 co-relation queries the response was YES. [2021-03-24 17:42:19,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 788 events. 377/788 cut-off events. For 503/519 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4582 event pairs, 233 based on Foata normal form. 25/752 useless extension candidates. Maximal degree in co-relation 1762. Up to 541 conditions per place. [2021-03-24 17:42:19,518 INFO L132 encePairwiseOnDemand]: 47/50 looper letters, 2 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2021-03-24 17:42:19,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 593 flow [2021-03-24 17:42:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 17:42:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 17:42:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-24 17:42:19,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-24 17:42:19,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:19,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,521 INFO L185 Difference]: Start difference. First operand has 85 places, 129 transitions, 597 flow. Second operand 3 states and 140 transitions. [2021-03-24 17:42:19,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 593 flow [2021-03-24 17:42:19,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 591 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-24 17:42:19,529 INFO L241 Difference]: Finished difference. Result has 85 places, 126 transitions, 591 flow [2021-03-24 17:42:19,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=591, PETRI_PLACES=85, PETRI_TRANSITIONS=126} [2021-03-24 17:42:19,530 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2021-03-24 17:42:19,530 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 126 transitions, 591 flow [2021-03-24 17:42:19,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:19,530 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:19,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 17:42:19,531 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:19,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:19,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1920145497, now seen corresponding path program 5 times [2021-03-24 17:42:19,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:19,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120607210] [2021-03-24 17:42:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:19,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-24 17:42:19,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 17:42:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:19,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120607210] [2021-03-24 17:42:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:19,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 17:42:19,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262043911] [2021-03-24 17:42:19,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 17:42:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:19,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 17:42:19,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 17:42:19,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 50 [2021-03-24 17:42:19,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 126 transitions, 591 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:19,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 50 [2021-03-24 17:42:19,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:19,626 INFO L129 PetriNetUnfolder]: 395/788 cut-off events. [2021-03-24 17:42:19,626 INFO L130 PetriNetUnfolder]: For 444/457 co-relation queries the response was YES. [2021-03-24 17:42:19,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1834 conditions, 788 events. 395/788 cut-off events. For 444/457 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4342 event pairs, 216 based on Foata normal form. 16/740 useless extension candidates. Maximal degree in co-relation 1762. Up to 531 conditions per place. [2021-03-24 17:42:19,636 INFO L132 encePairwiseOnDemand]: 47/50 looper letters, 2 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2021-03-24 17:42:19,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 126 transitions, 599 flow [2021-03-24 17:42:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 17:42:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 17:42:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-03-24 17:42:19,637 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-03-24 17:42:19,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:19,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-03-24 17:42:19,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,639 INFO L185 Difference]: Start difference. First operand has 85 places, 126 transitions, 591 flow. Second operand 3 states and 140 transitions. [2021-03-24 17:42:19,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 126 transitions, 599 flow [2021-03-24 17:42:19,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 126 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:19,646 INFO L241 Difference]: Finished difference. Result has 86 places, 126 transitions, 595 flow [2021-03-24 17:42:19,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=86, PETRI_TRANSITIONS=126} [2021-03-24 17:42:19,646 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2021-03-24 17:42:19,647 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 126 transitions, 595 flow [2021-03-24 17:42:19,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:19,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:19,647 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:19,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 17:42:19,647 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1621916849, now seen corresponding path program 6 times [2021-03-24 17:42:19,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:19,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596122869] [2021-03-24 17:42:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:19,739 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:19,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:19,746 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:19,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:19,760 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:19,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:19,769 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 17:42:19,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 17:42:19,779 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 17:42:19,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 17:42:19,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:19,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:19,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:19,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:19,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:19,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:20,024 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:20,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:20,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596122869] [2021-03-24 17:42:20,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:20,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:42:20,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968143888] [2021-03-24 17:42:20,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:42:20,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:42:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:42:20,030 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:20,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 126 transitions, 595 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) [2021-03-24 17:42:20,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:20,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:20,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:22,285 INFO L129 PetriNetUnfolder]: 846/1578 cut-off events. [2021-03-24 17:42:22,285 INFO L130 PetriNetUnfolder]: For 3498/3562 co-relation queries the response was YES. [2021-03-24 17:42:22,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 1578 events. 846/1578 cut-off events. For 3498/3562 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8678 event pairs, 265 based on Foata normal form. 5/1562 useless extension candidates. Maximal degree in co-relation 5226. Up to 1046 conditions per place. [2021-03-24 17:42:22,298 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 143 selfloop transitions, 141 changer transitions 5/305 dead transitions. [2021-03-24 17:42:22,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 305 transitions, 2043 flow [2021-03-24 17:42:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-24 17:42:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-03-24 17:42:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 1588 transitions. [2021-03-24 17:42:22,309 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5992452830188679 [2021-03-24 17:42:22,309 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 1588 transitions. [2021-03-24 17:42:22,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 1588 transitions. [2021-03-24 17:42:22,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:22,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 1588 transitions. [2021-03-24 17:42:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 29.962264150943398) internal successors, (1588), 53 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:22,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 50.0) internal successors, (2700), 54 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:22,321 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 50.0) internal successors, (2700), 54 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:22,321 INFO L185 Difference]: Start difference. First operand has 86 places, 126 transitions, 595 flow. Second operand 53 states and 1588 transitions. [2021-03-24 17:42:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 305 transitions, 2043 flow [2021-03-24 17:42:22,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 305 transitions, 2039 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:22,340 INFO L241 Difference]: Finished difference. Result has 154 places, 263 transitions, 1652 flow [2021-03-24 17:42:22,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1652, PETRI_PLACES=154, PETRI_TRANSITIONS=263} [2021-03-24 17:42:22,340 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 107 predicate places. [2021-03-24 17:42:22,340 INFO L480 AbstractCegarLoop]: Abstraction has has 154 places, 263 transitions, 1652 flow [2021-03-24 17:42:22,341 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) [2021-03-24 17:42:22,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:22,341 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:22,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 17:42:22,341 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:22,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1533720773, now seen corresponding path program 7 times [2021-03-24 17:42:22,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:22,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440389270] [2021-03-24 17:42:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:22,433 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:22,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:22,439 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:22,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:22,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:22,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:22,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:22,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:22,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:22,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:22,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:22,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:22,732 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:22,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:22,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440389270] [2021-03-24 17:42:22,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:22,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:42:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635006851] [2021-03-24 17:42:22,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:42:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:22,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:42:22,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:42:22,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:22,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 263 transitions, 1652 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) [2021-03-24 17:42:22,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:22,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:22,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:26,078 INFO L129 PetriNetUnfolder]: 1184/2223 cut-off events. [2021-03-24 17:42:26,079 INFO L130 PetriNetUnfolder]: For 15786/15937 co-relation queries the response was YES. [2021-03-24 17:42:26,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10548 conditions, 2223 events. 1184/2223 cut-off events. For 15786/15937 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13206 event pairs, 291 based on Foata normal form. 6/2204 useless extension candidates. Maximal degree in co-relation 10488. Up to 1434 conditions per place. [2021-03-24 17:42:26,107 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 290 selfloop transitions, 261 changer transitions 5/572 dead transitions. [2021-03-24 17:42:26,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 572 transitions, 5435 flow [2021-03-24 17:42:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-24 17:42:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-03-24 17:42:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2234 transitions. [2021-03-24 17:42:26,114 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6037837837837838 [2021-03-24 17:42:26,115 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2234 transitions. [2021-03-24 17:42:26,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2234 transitions. [2021-03-24 17:42:26,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:26,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2234 transitions. [2021-03-24 17:42:26,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 30.18918918918919) internal successors, (2234), 74 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:26,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 50.0) internal successors, (3750), 75 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:26,132 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 50.0) internal successors, (3750), 75 states have internal predecessors, (3750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:26,132 INFO L185 Difference]: Start difference. First operand has 154 places, 263 transitions, 1652 flow. Second operand 74 states and 2234 transitions. [2021-03-24 17:42:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 572 transitions, 5435 flow [2021-03-24 17:42:26,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 572 transitions, 5063 flow, removed 144 selfloop flow, removed 5 redundant places. [2021-03-24 17:42:26,224 INFO L241 Difference]: Finished difference. Result has 236 places, 540 transitions, 4521 flow [2021-03-24 17:42:26,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=4521, PETRI_PLACES=236, PETRI_TRANSITIONS=540} [2021-03-24 17:42:26,225 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 189 predicate places. [2021-03-24 17:42:26,226 INFO L480 AbstractCegarLoop]: Abstraction has has 236 places, 540 transitions, 4521 flow [2021-03-24 17:42:26,226 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) [2021-03-24 17:42:26,226 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:26,226 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:26,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 17:42:26,227 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:26,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1860501877, now seen corresponding path program 8 times [2021-03-24 17:42:26,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:26,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024717639] [2021-03-24 17:42:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:26,287 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:26,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:26,293 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:26,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:26,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:26,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:26,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:26,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:26,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:26,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:26,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:26,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:26,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:26,592 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:26,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:26,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024717639] [2021-03-24 17:42:26,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:26,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:42:26,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415833817] [2021-03-24 17:42:26,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:42:26,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:26,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:42:26,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:42:26,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:26,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 540 transitions, 4521 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) [2021-03-24 17:42:26,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:26,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:26,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:30,110 INFO L129 PetriNetUnfolder]: 1698/3148 cut-off events. [2021-03-24 17:42:30,110 INFO L130 PetriNetUnfolder]: For 30493/30845 co-relation queries the response was YES. [2021-03-24 17:42:30,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17733 conditions, 3148 events. 1698/3148 cut-off events. For 30493/30845 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19806 event pairs, 325 based on Foata normal form. 22/3146 useless extension candidates. Maximal degree in co-relation 17653. Up to 2024 conditions per place. [2021-03-24 17:42:30,198 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 546 selfloop transitions, 420 changer transitions 8/990 dead transitions. [2021-03-24 17:42:30,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 990 transitions, 10910 flow [2021-03-24 17:42:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-24 17:42:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-03-24 17:42:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2440 transitions. [2021-03-24 17:42:30,202 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.61 [2021-03-24 17:42:30,202 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 2440 transitions. [2021-03-24 17:42:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 2440 transitions. [2021-03-24 17:42:30,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:30,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 2440 transitions. [2021-03-24 17:42:30,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 30.5) internal successors, (2440), 80 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:30,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 50.0) internal successors, (4050), 81 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:30,213 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 50.0) internal successors, (4050), 81 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:30,213 INFO L185 Difference]: Start difference. First operand has 236 places, 540 transitions, 4521 flow. Second operand 80 states and 2440 transitions. [2021-03-24 17:42:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 990 transitions, 10910 flow [2021-03-24 17:42:30,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 990 transitions, 9354 flow, removed 778 selfloop flow, removed 1 redundant places. [2021-03-24 17:42:30,441 INFO L241 Difference]: Finished difference. Result has 338 places, 930 transitions, 8370 flow [2021-03-24 17:42:30,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8370, PETRI_PLACES=338, PETRI_TRANSITIONS=930} [2021-03-24 17:42:30,442 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 291 predicate places. [2021-03-24 17:42:30,442 INFO L480 AbstractCegarLoop]: Abstraction has has 338 places, 930 transitions, 8370 flow [2021-03-24 17:42:30,443 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) [2021-03-24 17:42:30,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:30,443 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:30,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 17:42:30,443 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2129663819, now seen corresponding path program 9 times [2021-03-24 17:42:30,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:30,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822873995] [2021-03-24 17:42:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:30,467 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:30,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:30,472 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:30,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:30,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:30,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:30,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:30,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:30,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:30,728 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:30,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:30,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822873995] [2021-03-24 17:42:30,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:30,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:42:30,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568252173] [2021-03-24 17:42:30,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:42:30,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:30,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:42:30,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:42:30,735 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:30,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 930 transitions, 8370 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) [2021-03-24 17:42:30,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:30,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:30,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:34,541 INFO L129 PetriNetUnfolder]: 2021/3770 cut-off events. [2021-03-24 17:42:34,541 INFO L130 PetriNetUnfolder]: For 61092/61572 co-relation queries the response was YES. [2021-03-24 17:42:34,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25163 conditions, 3770 events. 2021/3770 cut-off events. For 61092/61572 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 24779 event pairs, 279 based on Foata normal form. 22/3776 useless extension candidates. Maximal degree in co-relation 25040. Up to 2652 conditions per place. [2021-03-24 17:42:34,605 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 851 selfloop transitions, 419 changer transitions 5/1291 dead transitions. [2021-03-24 17:42:34,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1291 transitions, 16802 flow [2021-03-24 17:42:34,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-03-24 17:42:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-03-24 17:42:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 2773 transitions. [2021-03-24 17:42:34,610 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5963440860215053 [2021-03-24 17:42:34,611 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 2773 transitions. [2021-03-24 17:42:34,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 2773 transitions. [2021-03-24 17:42:34,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:34,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 2773 transitions. [2021-03-24 17:42:34,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 29.817204301075268) internal successors, (2773), 93 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:34,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 50.0) internal successors, (4700), 94 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:34,623 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 50.0) internal successors, (4700), 94 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:34,624 INFO L185 Difference]: Start difference. First operand has 338 places, 930 transitions, 8370 flow. Second operand 93 states and 2773 transitions. [2021-03-24 17:42:34,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 1291 transitions, 16802 flow [2021-03-24 17:42:35,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1291 transitions, 14390 flow, removed 1190 selfloop flow, removed 3 redundant places. [2021-03-24 17:42:35,255 INFO L241 Difference]: Finished difference. Result has 441 places, 1254 transitions, 12741 flow [2021-03-24 17:42:35,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=12741, PETRI_PLACES=441, PETRI_TRANSITIONS=1254} [2021-03-24 17:42:35,256 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 394 predicate places. [2021-03-24 17:42:35,256 INFO L480 AbstractCegarLoop]: Abstraction has has 441 places, 1254 transitions, 12741 flow [2021-03-24 17:42:35,256 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) [2021-03-24 17:42:35,257 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:35,257 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:35,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 17:42:35,257 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:35,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:35,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1885784571, now seen corresponding path program 10 times [2021-03-24 17:42:35,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:35,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007215317] [2021-03-24 17:42:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:35,285 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:35,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:35,290 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:35,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:35,297 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:35,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:35,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:35,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:35,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:35,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:35,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:35,524 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:35,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:35,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007215317] [2021-03-24 17:42:35,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:35,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:42:35,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315680456] [2021-03-24 17:42:35,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:42:35,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:42:35,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:42:35,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:35,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1254 transitions, 12741 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) [2021-03-24 17:42:35,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:35,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:35,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:38,521 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-03-24 17:42:39,549 INFO L129 PetriNetUnfolder]: 2388/4438 cut-off events. [2021-03-24 17:42:39,549 INFO L130 PetriNetUnfolder]: For 73706/74449 co-relation queries the response was YES. [2021-03-24 17:42:39,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30457 conditions, 4438 events. 2388/4438 cut-off events. For 73706/74449 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 30188 event pairs, 277 based on Foata normal form. 37/4454 useless extension candidates. Maximal degree in co-relation 30325. Up to 3265 conditions per place. [2021-03-24 17:42:39,645 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1153 selfloop transitions, 469 changer transitions 8/1646 dead transitions. [2021-03-24 17:42:39,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 1646 transitions, 22336 flow [2021-03-24 17:42:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-03-24 17:42:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-03-24 17:42:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2424 transitions. [2021-03-24 17:42:39,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5985185185185186 [2021-03-24 17:42:39,659 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2424 transitions. [2021-03-24 17:42:39,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2424 transitions. [2021-03-24 17:42:39,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:39,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2424 transitions. [2021-03-24 17:42:39,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 29.925925925925927) internal successors, (2424), 81 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:39,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 50.0) internal successors, (4100), 82 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:39,674 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 50.0) internal successors, (4100), 82 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:39,674 INFO L185 Difference]: Start difference. First operand has 441 places, 1254 transitions, 12741 flow. Second operand 81 states and 2424 transitions. [2021-03-24 17:42:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 1646 transitions, 22336 flow [2021-03-24 17:42:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1646 transitions, 18028 flow, removed 2137 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:40,384 INFO L241 Difference]: Finished difference. Result has 526 places, 1614 transitions, 15872 flow [2021-03-24 17:42:40,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8609, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=15872, PETRI_PLACES=526, PETRI_TRANSITIONS=1614} [2021-03-24 17:42:40,385 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 479 predicate places. [2021-03-24 17:42:40,385 INFO L480 AbstractCegarLoop]: Abstraction has has 526 places, 1614 transitions, 15872 flow [2021-03-24 17:42:40,386 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) [2021-03-24 17:42:40,386 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:40,386 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:40,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 17:42:40,386 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1995075057, now seen corresponding path program 11 times [2021-03-24 17:42:40,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:40,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479811184] [2021-03-24 17:42:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:40,408 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:40,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:40,413 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:40,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:40,421 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:40,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:40,431 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 17:42:40,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 17:42:40,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:40,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:40,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:40,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:40,645 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:40,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:40,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479811184] [2021-03-24 17:42:40,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:40,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:42:40,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472777096] [2021-03-24 17:42:40,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:42:40,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:42:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:42:40,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:40,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1614 transitions, 15872 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) [2021-03-24 17:42:40,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:40,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:40,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:45,092 INFO L129 PetriNetUnfolder]: 2785/5185 cut-off events. [2021-03-24 17:42:45,092 INFO L130 PetriNetUnfolder]: For 79247/80497 co-relation queries the response was YES. [2021-03-24 17:42:45,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35343 conditions, 5185 events. 2785/5185 cut-off events. For 79247/80497 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 36601 event pairs, 291 based on Foata normal form. 83/5248 useless extension candidates. Maximal degree in co-relation 35198. Up to 3657 conditions per place. [2021-03-24 17:42:45,192 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1405 selfloop transitions, 612 changer transitions 8/2041 dead transitions. [2021-03-24 17:42:45,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 2041 transitions, 27530 flow [2021-03-24 17:42:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-03-24 17:42:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-03-24 17:42:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 2612 transitions. [2021-03-24 17:42:45,197 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6004597701149426 [2021-03-24 17:42:45,197 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 2612 transitions. [2021-03-24 17:42:45,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 2612 transitions. [2021-03-24 17:42:45,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:45,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 2612 transitions. [2021-03-24 17:42:45,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 30.022988505747126) internal successors, (2612), 87 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:45,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 50.0) internal successors, (4400), 88 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:45,209 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 50.0) internal successors, (4400), 88 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:45,209 INFO L185 Difference]: Start difference. First operand has 526 places, 1614 transitions, 15872 flow. Second operand 87 states and 2612 transitions. [2021-03-24 17:42:45,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 2041 transitions, 27530 flow [2021-03-24 17:42:46,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 2041 transitions, 23151 flow, removed 2159 selfloop flow, removed 2 redundant places. [2021-03-24 17:42:46,335 INFO L241 Difference]: Finished difference. Result has 620 places, 1977 transitions, 20203 flow [2021-03-24 17:42:46,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=11752, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=20203, PETRI_PLACES=620, PETRI_TRANSITIONS=1977} [2021-03-24 17:42:46,337 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 573 predicate places. [2021-03-24 17:42:46,337 INFO L480 AbstractCegarLoop]: Abstraction has has 620 places, 1977 transitions, 20203 flow [2021-03-24 17:42:46,338 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) [2021-03-24 17:42:46,338 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:46,338 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:46,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 17:42:46,338 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:46,339 INFO L82 PathProgramCache]: Analyzing trace with hash 820578997, now seen corresponding path program 12 times [2021-03-24 17:42:46,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:46,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737296649] [2021-03-24 17:42:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:46,373 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:46,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:46,381 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:46,390 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:46,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:46,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:46,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:46,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:46,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:46,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:46,599 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:46,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:46,623 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:46,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:46,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737296649] [2021-03-24 17:42:46,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:46,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:42:46,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522244303] [2021-03-24 17:42:46,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:42:46,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:46,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:42:46,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:42:46,628 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:46,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 1977 transitions, 20203 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) [2021-03-24 17:42:46,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:46,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:46,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:49,930 INFO L129 PetriNetUnfolder]: 2992/5595 cut-off events. [2021-03-24 17:42:49,931 INFO L130 PetriNetUnfolder]: For 81175/82567 co-relation queries the response was YES. [2021-03-24 17:42:49,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37574 conditions, 5595 events. 2992/5595 cut-off events. For 81175/82567 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 40221 event pairs, 297 based on Foata normal form. 120/5691 useless extension candidates. Maximal degree in co-relation 37415. Up to 4204 conditions per place. [2021-03-24 17:42:50,013 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1733 selfloop transitions, 428 changer transitions 6/2183 dead transitions. [2021-03-24 17:42:50,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 2183 transitions, 27881 flow [2021-03-24 17:42:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-03-24 17:42:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-03-24 17:42:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1328 transitions. [2021-03-24 17:42:50,015 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6036363636363636 [2021-03-24 17:42:50,015 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 1328 transitions. [2021-03-24 17:42:50,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 1328 transitions. [2021-03-24 17:42:50,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:50,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 1328 transitions. [2021-03-24 17:42:50,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 30.181818181818183) internal successors, (1328), 44 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:50,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 50.0) internal successors, (2250), 45 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:50,020 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 50.0) internal successors, (2250), 45 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:50,021 INFO L185 Difference]: Start difference. First operand has 620 places, 1977 transitions, 20203 flow. Second operand 44 states and 1328 transitions. [2021-03-24 17:42:50,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 2183 transitions, 27881 flow [2021-03-24 17:42:51,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 658 places, 2183 transitions, 22834 flow, removed 2470 selfloop flow, removed 3 redundant places. [2021-03-24 17:42:51,075 INFO L241 Difference]: Finished difference. Result has 671 places, 2130 transitions, 18739 flow [2021-03-24 17:42:51,077 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=15160, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=18739, PETRI_PLACES=671, PETRI_TRANSITIONS=2130} [2021-03-24 17:42:51,077 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 624 predicate places. [2021-03-24 17:42:51,077 INFO L480 AbstractCegarLoop]: Abstraction has has 671 places, 2130 transitions, 18739 flow [2021-03-24 17:42:51,078 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) [2021-03-24 17:42:51,078 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:51,078 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:51,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 17:42:51,078 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:51,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash 88824157, now seen corresponding path program 13 times [2021-03-24 17:42:51,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:51,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115681953] [2021-03-24 17:42:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:51,101 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:51,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:51,106 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:51,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:51,114 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:51,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:51,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:51,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:51,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:51,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:51,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:51,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:51,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:51,328 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:51,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:51,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115681953] [2021-03-24 17:42:51,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:51,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:42:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439059102] [2021-03-24 17:42:51,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:42:51,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:42:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:42:51,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:51,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 2130 transitions, 18739 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) [2021-03-24 17:42:51,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:51,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:51,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:42:53,691 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2021-03-24 17:42:54,863 INFO L129 PetriNetUnfolder]: 3315/6251 cut-off events. [2021-03-24 17:42:54,863 INFO L130 PetriNetUnfolder]: For 89131/90799 co-relation queries the response was YES. [2021-03-24 17:42:55,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41316 conditions, 6251 events. 3315/6251 cut-off events. For 89131/90799 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 46157 event pairs, 233 based on Foata normal form. 292/6516 useless extension candidates. Maximal degree in co-relation 41138. Up to 4306 conditions per place. [2021-03-24 17:42:55,067 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1765 selfloop transitions, 730 changer transitions 8/2519 dead transitions. [2021-03-24 17:42:55,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 2519 transitions, 30298 flow [2021-03-24 17:42:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-03-24 17:42:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-03-24 17:42:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1730 transitions. [2021-03-24 17:42:55,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6070175438596491 [2021-03-24 17:42:55,070 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 1730 transitions. [2021-03-24 17:42:55,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 1730 transitions. [2021-03-24 17:42:55,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:42:55,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 1730 transitions. [2021-03-24 17:42:55,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 30.350877192982455) internal successors, (1730), 57 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:55,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 50.0) internal successors, (2900), 58 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:55,076 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 50.0) internal successors, (2900), 58 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:42:55,076 INFO L185 Difference]: Start difference. First operand has 671 places, 2130 transitions, 18739 flow. Second operand 57 states and 1730 transitions. [2021-03-24 17:42:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 2519 transitions, 30298 flow [2021-03-24 17:42:56,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 2519 transitions, 28815 flow, removed 631 selfloop flow, removed 5 redundant places. [2021-03-24 17:42:56,355 INFO L241 Difference]: Finished difference. Result has 742 places, 2409 transitions, 24555 flow [2021-03-24 17:42:56,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=17494, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=24555, PETRI_PLACES=742, PETRI_TRANSITIONS=2409} [2021-03-24 17:42:56,358 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 695 predicate places. [2021-03-24 17:42:56,358 INFO L480 AbstractCegarLoop]: Abstraction has has 742 places, 2409 transitions, 24555 flow [2021-03-24 17:42:56,358 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) [2021-03-24 17:42:56,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:42:56,358 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:42:56,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 17:42:56,359 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:42:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:42:56,359 INFO L82 PathProgramCache]: Analyzing trace with hash -178572091, now seen corresponding path program 14 times [2021-03-24 17:42:56,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:42:56,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969338838] [2021-03-24 17:42:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:42:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:42:56,380 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:42:56,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:42:56,385 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:56,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:56,393 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:42:56,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:42:56,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:56,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:42:56,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:42:56,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:42:56,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:42:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:42:56,620 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:42:56,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:42:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:42:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969338838] [2021-03-24 17:42:56,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:42:56,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-24 17:42:56,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55398029] [2021-03-24 17:42:56,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-24 17:42:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:42:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-24 17:42:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-24 17:42:56,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:42:56,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 2409 transitions, 24555 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) [2021-03-24 17:42:56,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:42:56,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:42:56,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:43:00,544 INFO L129 PetriNetUnfolder]: 3346/6296 cut-off events. [2021-03-24 17:43:00,544 INFO L130 PetriNetUnfolder]: For 115786/117480 co-relation queries the response was YES. [2021-03-24 17:43:00,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45109 conditions, 6296 events. 3346/6296 cut-off events. For 115786/117480 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 46413 event pairs, 328 based on Foata normal form. 330/6595 useless extension candidates. Maximal degree in co-relation 44901. Up to 4751 conditions per place. [2021-03-24 17:43:00,647 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1975 selfloop transitions, 495 changer transitions 4/2490 dead transitions. [2021-03-24 17:43:00,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 777 places, 2490 transitions, 31543 flow [2021-03-24 17:43:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-24 17:43:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-24 17:43:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1208 transitions. [2021-03-24 17:43:00,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.604 [2021-03-24 17:43:00,649 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1208 transitions. [2021-03-24 17:43:00,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1208 transitions. [2021-03-24 17:43:00,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:43:00,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1208 transitions. [2021-03-24 17:43:00,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 30.2) internal successors, (1208), 40 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:00,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 50.0) internal successors, (2050), 41 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:00,653 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 50.0) internal successors, (2050), 41 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:00,653 INFO L185 Difference]: Start difference. First operand has 742 places, 2409 transitions, 24555 flow. Second operand 40 states and 1208 transitions. [2021-03-24 17:43:00,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 777 places, 2490 transitions, 31543 flow [2021-03-24 17:43:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 770 places, 2490 transitions, 28992 flow, removed 1093 selfloop flow, removed 7 redundant places. [2021-03-24 17:43:02,644 INFO L241 Difference]: Finished difference. Result has 775 places, 2453 transitions, 24261 flow [2021-03-24 17:43:02,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=22014, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1948, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=24261, PETRI_PLACES=775, PETRI_TRANSITIONS=2453} [2021-03-24 17:43:02,647 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 728 predicate places. [2021-03-24 17:43:02,647 INFO L480 AbstractCegarLoop]: Abstraction has has 775 places, 2453 transitions, 24261 flow [2021-03-24 17:43:02,647 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) [2021-03-24 17:43:02,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:43:02,647 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:43:02,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 17:43:02,647 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:43:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:43:02,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1747537561, now seen corresponding path program 15 times [2021-03-24 17:43:02,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:43:02,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063301438] [2021-03-24 17:43:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:43:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:43:02,695 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:43:02,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:43:02,703 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:02,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:02,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:02,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:02,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:02,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:02,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:02,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:02,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:02,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:02,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:43:02,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:43:03,051 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:43:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:43:03,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063301438] [2021-03-24 17:43:03,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:43:03,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:43:03,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236495929] [2021-03-24 17:43:03,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:43:03,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:43:03,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:43:03,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:43:03,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:43:03,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 775 places, 2453 transitions, 24261 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) [2021-03-24 17:43:03,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:43:03,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:43:03,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:43:07,553 INFO L129 PetriNetUnfolder]: 3558/6768 cut-off events. [2021-03-24 17:43:07,553 INFO L130 PetriNetUnfolder]: For 130536/132364 co-relation queries the response was YES. [2021-03-24 17:43:07,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49105 conditions, 6768 events. 3558/6768 cut-off events. For 130536/132364 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 51063 event pairs, 287 based on Foata normal form. 357/7087 useless extension candidates. Maximal degree in co-relation 48887. Up to 4837 conditions per place. [2021-03-24 17:43:07,673 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 1975 selfloop transitions, 699 changer transitions 12/2702 dead transitions. [2021-03-24 17:43:07,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 2702 transitions, 34769 flow [2021-03-24 17:43:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-03-24 17:43:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-03-24 17:43:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1455 transitions. [2021-03-24 17:43:07,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.60625 [2021-03-24 17:43:07,677 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 1455 transitions. [2021-03-24 17:43:07,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 1455 transitions. [2021-03-24 17:43:07,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:43:07,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 1455 transitions. [2021-03-24 17:43:07,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 30.3125) internal successors, (1455), 48 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:07,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 50.0) internal successors, (2450), 49 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:07,681 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 50.0) internal successors, (2450), 49 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:07,682 INFO L185 Difference]: Start difference. First operand has 775 places, 2453 transitions, 24261 flow. Second operand 48 states and 1455 transitions. [2021-03-24 17:43:07,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 2702 transitions, 34769 flow [2021-03-24 17:43:09,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 2702 transitions, 33326 flow, removed 529 selfloop flow, removed 7 redundant places. [2021-03-24 17:43:09,908 INFO L241 Difference]: Finished difference. Result has 829 places, 2646 transitions, 28506 flow [2021-03-24 17:43:09,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=22840, PETRI_DIFFERENCE_MINUEND_PLACES=765, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=28506, PETRI_PLACES=829, PETRI_TRANSITIONS=2646} [2021-03-24 17:43:09,911 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 782 predicate places. [2021-03-24 17:43:09,911 INFO L480 AbstractCegarLoop]: Abstraction has has 829 places, 2646 transitions, 28506 flow [2021-03-24 17:43:09,911 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) [2021-03-24 17:43:09,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:43:09,911 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:43:09,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 17:43:09,911 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:43:09,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:43:09,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1802429875, now seen corresponding path program 16 times [2021-03-24 17:43:09,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:43:09,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829730274] [2021-03-24 17:43:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:43:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:43:09,932 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:43:09,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:43:09,936 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:09,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:09,944 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:09,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:09,952 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 17:43:09,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 17:43:09,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:09,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:09,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:09,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:09,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:10,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:10,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:10,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:10,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:10,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:43:10,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:43:10,204 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:43:10,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:43:10,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829730274] [2021-03-24 17:43:10,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:43:10,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:43:10,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591800776] [2021-03-24 17:43:10,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:43:10,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:43:10,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:43:10,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:43:10,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:43:10,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 2646 transitions, 28506 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) [2021-03-24 17:43:10,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:43:10,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:43:10,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:43:16,792 INFO L129 PetriNetUnfolder]: 3967/7529 cut-off events. [2021-03-24 17:43:16,793 INFO L130 PetriNetUnfolder]: For 185009/186938 co-relation queries the response was YES. [2021-03-24 17:43:16,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60531 conditions, 7529 events. 3967/7529 cut-off events. For 185009/186938 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 57640 event pairs, 279 based on Foata normal form. 142/7642 useless extension candidates. Maximal degree in co-relation 60335. Up to 5185 conditions per place. [2021-03-24 17:43:16,945 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 2185 selfloop transitions, 957 changer transitions 12/3170 dead transitions. [2021-03-24 17:43:16,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 909 places, 3170 transitions, 46402 flow [2021-03-24 17:43:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-03-24 17:43:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-03-24 17:43:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 2575 transitions. [2021-03-24 17:43:16,948 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6058823529411764 [2021-03-24 17:43:16,948 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 2575 transitions. [2021-03-24 17:43:16,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 2575 transitions. [2021-03-24 17:43:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:43:16,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 2575 transitions. [2021-03-24 17:43:16,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 30.294117647058822) internal successors, (2575), 85 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:16,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 50.0) internal successors, (4300), 86 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:16,956 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 50.0) internal successors, (4300), 86 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:16,957 INFO L185 Difference]: Start difference. First operand has 829 places, 2646 transitions, 28506 flow. Second operand 85 states and 2575 transitions. [2021-03-24 17:43:16,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 909 places, 3170 transitions, 46402 flow [2021-03-24 17:43:19,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 3170 transitions, 44411 flow, removed 860 selfloop flow, removed 8 redundant places. [2021-03-24 17:43:19,913 INFO L241 Difference]: Finished difference. Result has 922 places, 3110 transitions, 39983 flow [2021-03-24 17:43:19,915 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=26539, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2049, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=39983, PETRI_PLACES=922, PETRI_TRANSITIONS=3110} [2021-03-24 17:43:19,915 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 875 predicate places. [2021-03-24 17:43:19,916 INFO L480 AbstractCegarLoop]: Abstraction has has 922 places, 3110 transitions, 39983 flow [2021-03-24 17:43:19,916 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) [2021-03-24 17:43:19,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:43:19,916 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:43:19,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 17:43:19,916 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:43:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:43:19,916 INFO L82 PathProgramCache]: Analyzing trace with hash 495428929, now seen corresponding path program 17 times [2021-03-24 17:43:19,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:43:19,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960435308] [2021-03-24 17:43:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:43:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:43:19,936 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:43:19,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:43:19,941 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:19,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:19,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:19,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:19,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:19,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:19,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:19,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:19,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:19,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:19,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:19,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:20,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:20,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:20,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:20,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:20,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:20,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:20,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:20,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:20,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:20,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:43:20,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:43:20,193 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:43:20,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:43:20,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960435308] [2021-03-24 17:43:20,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:43:20,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:43:20,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782107926] [2021-03-24 17:43:20,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:43:20,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:43:20,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:43:20,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:43:20,197 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:43:20,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 3110 transitions, 39983 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) [2021-03-24 17:43:20,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:43:20,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:43:20,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:43:29,969 INFO L129 PetriNetUnfolder]: 5067/9642 cut-off events. [2021-03-24 17:43:29,969 INFO L130 PetriNetUnfolder]: For 294745/297446 co-relation queries the response was YES. [2021-03-24 17:43:30,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87968 conditions, 9642 events. 5067/9642 cut-off events. For 294745/297446 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 77196 event pairs, 339 based on Foata normal form. 285/9904 useless extension candidates. Maximal degree in co-relation 87585. Up to 6420 conditions per place. [2021-03-24 17:43:30,167 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 2860 selfloop transitions, 1468 changer transitions 9/4353 dead transitions. [2021-03-24 17:43:30,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1027 places, 4353 transitions, 80994 flow [2021-03-24 17:43:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-03-24 17:43:30,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-03-24 17:43:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 3401 transitions. [2021-03-24 17:43:30,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6127927927927928 [2021-03-24 17:43:30,170 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 3401 transitions. [2021-03-24 17:43:30,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 3401 transitions. [2021-03-24 17:43:30,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:43:30,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 3401 transitions. [2021-03-24 17:43:30,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 30.63963963963964) internal successors, (3401), 111 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:30,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 50.0) internal successors, (5600), 112 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:30,178 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 50.0) internal successors, (5600), 112 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:30,178 INFO L185 Difference]: Start difference. First operand has 922 places, 3110 transitions, 39983 flow. Second operand 111 states and 3401 transitions. [2021-03-24 17:43:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1027 places, 4353 transitions, 80994 flow [2021-03-24 17:43:36,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1019 places, 4353 transitions, 65694 flow, removed 7501 selfloop flow, removed 8 redundant places. [2021-03-24 17:43:37,046 INFO L241 Difference]: Finished difference. Result has 1059 places, 4180 transitions, 60467 flow [2021-03-24 17:43:37,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=32353, PETRI_DIFFERENCE_MINUEND_PLACES=909, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=60467, PETRI_PLACES=1059, PETRI_TRANSITIONS=4180} [2021-03-24 17:43:37,049 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1012 predicate places. [2021-03-24 17:43:37,049 INFO L480 AbstractCegarLoop]: Abstraction has has 1059 places, 4180 transitions, 60467 flow [2021-03-24 17:43:37,049 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) [2021-03-24 17:43:37,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:43:37,049 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:43:37,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 17:43:37,050 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:43:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:43:37,050 INFO L82 PathProgramCache]: Analyzing trace with hash 415879373, now seen corresponding path program 18 times [2021-03-24 17:43:37,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:43:37,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721532269] [2021-03-24 17:43:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:43:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:43:37,108 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:43:37,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:43:37,114 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:37,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:37,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:37,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:37,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:37,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:37,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:43:37,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:43:37,351 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:43:37,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:43:37,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721532269] [2021-03-24 17:43:37,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:43:37,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:43:37,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718841018] [2021-03-24 17:43:37,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:43:37,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:43:37,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:43:37,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:43:37,356 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:43:37,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1059 places, 4180 transitions, 60467 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) [2021-03-24 17:43:37,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:43:37,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:43:37,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:43:43,913 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-03-24 17:43:47,918 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-03-24 17:43:48,226 INFO L129 PetriNetUnfolder]: 5510/10439 cut-off events. [2021-03-24 17:43:48,227 INFO L130 PetriNetUnfolder]: For 292039/295182 co-relation queries the response was YES. [2021-03-24 17:43:48,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93397 conditions, 10439 events. 5510/10439 cut-off events. For 292039/295182 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 84445 event pairs, 330 based on Foata normal form. 540/10940 useless extension candidates. Maximal degree in co-relation 93061. Up to 7689 conditions per place. [2021-03-24 17:43:48,483 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 3666 selfloop transitions, 873 changer transitions 4/4559 dead transitions. [2021-03-24 17:43:48,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1135 places, 4559 transitions, 80469 flow [2021-03-24 17:43:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-24 17:43:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-03-24 17:43:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2413 transitions. [2021-03-24 17:43:48,485 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.60325 [2021-03-24 17:43:48,485 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 2413 transitions. [2021-03-24 17:43:48,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 2413 transitions. [2021-03-24 17:43:48,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:43:48,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 2413 transitions. [2021-03-24 17:43:48,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 30.1625) internal successors, (2413), 80 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:48,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 50.0) internal successors, (4050), 81 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:48,491 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 50.0) internal successors, (4050), 81 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:43:48,491 INFO L185 Difference]: Start difference. First operand has 1059 places, 4180 transitions, 60467 flow. Second operand 80 states and 2413 transitions. [2021-03-24 17:43:48,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1135 places, 4559 transitions, 80469 flow [2021-03-24 17:43:56,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1133 places, 4559 transitions, 68637 flow, removed 5896 selfloop flow, removed 2 redundant places. [2021-03-24 17:43:56,234 INFO L241 Difference]: Finished difference. Result has 1143 places, 4524 transitions, 61200 flow [2021-03-24 17:43:56,238 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=48783, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=586, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=61200, PETRI_PLACES=1143, PETRI_TRANSITIONS=4524} [2021-03-24 17:43:56,238 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1096 predicate places. [2021-03-24 17:43:56,238 INFO L480 AbstractCegarLoop]: Abstraction has has 1143 places, 4524 transitions, 61200 flow [2021-03-24 17:43:56,238 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) [2021-03-24 17:43:56,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:43:56,238 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:43:56,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 17:43:56,239 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:43:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:43:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash -928528059, now seen corresponding path program 19 times [2021-03-24 17:43:56,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:43:56,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981045858] [2021-03-24 17:43:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:43:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:43:56,258 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:43:56,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:43:56,264 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:56,272 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:43:56,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:43:56,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:56,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:43:56,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:56,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:43:56,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:43:56,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:43:56,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:43:56,494 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:43:56,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:43:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:43:56,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981045858] [2021-03-24 17:43:56,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:43:56,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:43:56,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435543139] [2021-03-24 17:43:56,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:43:56,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:43:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:43:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:43:56,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:43:56,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1143 places, 4524 transitions, 61200 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) [2021-03-24 17:43:56,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:43:56,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:43:56,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:44:06,143 INFO L129 PetriNetUnfolder]: 5731/10826 cut-off events. [2021-03-24 17:44:06,143 INFO L130 PetriNetUnfolder]: For 267620/270500 co-relation queries the response was YES. [2021-03-24 17:44:06,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92437 conditions, 10826 events. 5731/10826 cut-off events. For 267620/270500 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 87815 event pairs, 273 based on Foata normal form. 601/11385 useless extension candidates. Maximal degree in co-relation 92102. Up to 8175 conditions per place. [2021-03-24 17:44:06,563 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 3952 selfloop transitions, 777 changer transitions 2/4747 dead transitions. [2021-03-24 17:44:06,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1201 places, 4747 transitions, 77574 flow [2021-03-24 17:44:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-03-24 17:44:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-03-24 17:44:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1881 transitions. [2021-03-24 17:44:06,566 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6067741935483871 [2021-03-24 17:44:06,566 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1881 transitions. [2021-03-24 17:44:06,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1881 transitions. [2021-03-24 17:44:06,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:44:06,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1881 transitions. [2021-03-24 17:44:06,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.338709677419356) internal successors, (1881), 62 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:06,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 50.0) internal successors, (3150), 63 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:06,571 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 50.0) internal successors, (3150), 63 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:06,571 INFO L185 Difference]: Start difference. First operand has 1143 places, 4524 transitions, 61200 flow. Second operand 62 states and 1881 transitions. [2021-03-24 17:44:06,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1201 places, 4747 transitions, 77574 flow [2021-03-24 17:44:13,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1196 places, 4747 transitions, 68653 flow, removed 4306 selfloop flow, removed 5 redundant places. [2021-03-24 17:44:14,037 INFO L241 Difference]: Finished difference. Result has 1213 places, 4684 transitions, 58764 flow [2021-03-24 17:44:14,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=52333, PETRI_DIFFERENCE_MINUEND_PLACES=1135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=633, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=58764, PETRI_PLACES=1213, PETRI_TRANSITIONS=4684} [2021-03-24 17:44:14,042 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1166 predicate places. [2021-03-24 17:44:14,042 INFO L480 AbstractCegarLoop]: Abstraction has has 1213 places, 4684 transitions, 58764 flow [2021-03-24 17:44:14,043 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) [2021-03-24 17:44:14,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:44:14,043 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:44:14,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 17:44:14,043 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:44:14,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:44:14,043 INFO L82 PathProgramCache]: Analyzing trace with hash 854269427, now seen corresponding path program 20 times [2021-03-24 17:44:14,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:44:14,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068030079] [2021-03-24 17:44:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:44:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:44:14,064 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:44:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:44:14,070 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:44:14,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:44:14,079 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:44:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:44:14,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:14,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:14,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:14,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:14,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:14,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:44:14,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:44:14,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:44:14,316 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:44:14,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:44:14,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068030079] [2021-03-24 17:44:14,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:44:14,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:44:14,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970573386] [2021-03-24 17:44:14,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:44:14,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:44:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:44:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:44:14,320 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:44:14,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1213 places, 4684 transitions, 58764 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) [2021-03-24 17:44:14,321 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:44:14,321 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:44:14,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:44:24,197 INFO L129 PetriNetUnfolder]: 5788/10914 cut-off events. [2021-03-24 17:44:24,197 INFO L130 PetriNetUnfolder]: For 273230/276192 co-relation queries the response was YES. [2021-03-24 17:44:25,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88675 conditions, 10914 events. 5788/10914 cut-off events. For 273230/276192 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 88566 event pairs, 261 based on Foata normal form. 488/11357 useless extension candidates. Maximal degree in co-relation 88323. Up to 8469 conditions per place. [2021-03-24 17:44:25,520 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4134 selfloop transitions, 628 changer transitions 3/4781 dead transitions. [2021-03-24 17:44:25,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1238 places, 4781 transitions, 71278 flow [2021-03-24 17:44:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-24 17:44:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-03-24 17:44:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 843 transitions. [2021-03-24 17:44:25,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6021428571428571 [2021-03-24 17:44:25,529 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 843 transitions. [2021-03-24 17:44:25,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 843 transitions. [2021-03-24 17:44:25,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:44:25,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 843 transitions. [2021-03-24 17:44:25,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 30.107142857142858) internal successors, (843), 28 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:25,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 50.0) internal successors, (1450), 29 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:25,531 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 50.0) internal successors, (1450), 29 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:25,531 INFO L185 Difference]: Start difference. First operand has 1213 places, 4684 transitions, 58764 flow. Second operand 28 states and 843 transitions. [2021-03-24 17:44:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1238 places, 4781 transitions, 71278 flow [2021-03-24 17:44:31,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1223 places, 4781 transitions, 68278 flow, removed 1212 selfloop flow, removed 15 redundant places. [2021-03-24 17:44:31,963 INFO L241 Difference]: Finished difference. Result has 1232 places, 4754 transitions, 59359 flow [2021-03-24 17:44:31,967 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=55883, PETRI_DIFFERENCE_MINUEND_PLACES=1196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=568, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4099, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=59359, PETRI_PLACES=1232, PETRI_TRANSITIONS=4754} [2021-03-24 17:44:31,967 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1185 predicate places. [2021-03-24 17:44:31,967 INFO L480 AbstractCegarLoop]: Abstraction has has 1232 places, 4754 transitions, 59359 flow [2021-03-24 17:44:31,967 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) [2021-03-24 17:44:31,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:44:31,967 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:44:31,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 17:44:31,968 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:44:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:44:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 229183975, now seen corresponding path program 21 times [2021-03-24 17:44:31,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:44:31,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222316022] [2021-03-24 17:44:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:44:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:44:31,984 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:44:31,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:44:31,990 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:44:31,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:44:31,997 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:44:31,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:44:32,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:32,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:32,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:44:32,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:44:32,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:44:32,258 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:44:32,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:44:32,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222316022] [2021-03-24 17:44:32,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:44:32,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:44:32,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561888424] [2021-03-24 17:44:32,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:44:32,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:44:32,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:44:32,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:44:32,264 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:44:32,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1232 places, 4754 transitions, 59359 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) [2021-03-24 17:44:32,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:44:32,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:44:32,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:44:43,570 INFO L129 PetriNetUnfolder]: 5863/11100 cut-off events. [2021-03-24 17:44:43,570 INFO L130 PetriNetUnfolder]: For 294834/297750 co-relation queries the response was YES. [2021-03-24 17:44:44,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91221 conditions, 11100 events. 5863/11100 cut-off events. For 294834/297750 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 90499 event pairs, 272 based on Foata normal form. 488/11552 useless extension candidates. Maximal degree in co-relation 90860. Up to 8645 conditions per place. [2021-03-24 17:44:44,251 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4207 selfloop transitions, 648 changer transitions 3/4874 dead transitions. [2021-03-24 17:44:44,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1272 places, 4874 transitions, 73275 flow [2021-03-24 17:44:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-24 17:44:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-24 17:44:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1293 transitions. [2021-03-24 17:44:44,253 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6013953488372094 [2021-03-24 17:44:44,253 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1293 transitions. [2021-03-24 17:44:44,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1293 transitions. [2021-03-24 17:44:44,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:44:44,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1293 transitions. [2021-03-24 17:44:44,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.069767441860463) internal successors, (1293), 43 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:44,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 50.0) internal successors, (2200), 44 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:44,256 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 50.0) internal successors, (2200), 44 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:44:44,256 INFO L185 Difference]: Start difference. First operand has 1232 places, 4754 transitions, 59359 flow. Second operand 43 states and 1293 transitions. [2021-03-24 17:44:44,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1272 places, 4874 transitions, 73275 flow [2021-03-24 17:44:53,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1266 places, 4874 transitions, 71747 flow, removed 561 selfloop flow, removed 6 redundant places. [2021-03-24 17:44:53,610 INFO L241 Difference]: Finished difference. Result has 1277 places, 4835 transitions, 61914 flow [2021-03-24 17:44:53,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=57895, PETRI_DIFFERENCE_MINUEND_PLACES=1224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=61914, PETRI_PLACES=1277, PETRI_TRANSITIONS=4835} [2021-03-24 17:44:53,613 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1230 predicate places. [2021-03-24 17:44:53,613 INFO L480 AbstractCegarLoop]: Abstraction has has 1277 places, 4835 transitions, 61914 flow [2021-03-24 17:44:53,613 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) [2021-03-24 17:44:53,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:44:53,614 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:44:53,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 17:44:53,614 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:44:53,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:44:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2016222457, now seen corresponding path program 22 times [2021-03-24 17:44:53,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:44:53,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721507439] [2021-03-24 17:44:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:44:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:44:53,631 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:44:53,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:44:53,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:44:53,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:44:53,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:44:53,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:53,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:44:53,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:44:53,854 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:44:53,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:44:53,876 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:44:53,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:44:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:44:53,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721507439] [2021-03-24 17:44:53,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:44:53,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:44:53,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401066301] [2021-03-24 17:44:53,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:44:53,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:44:53,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:44:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:44:53,879 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:44:53,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1277 places, 4835 transitions, 61914 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) [2021-03-24 17:44:53,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:44:53,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:44:53,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:45:03,555 INFO L129 PetriNetUnfolder]: 5968/11360 cut-off events. [2021-03-24 17:45:03,555 INFO L130 PetriNetUnfolder]: For 330369/333213 co-relation queries the response was YES. [2021-03-24 17:45:03,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94605 conditions, 11360 events. 5968/11360 cut-off events. For 330369/333213 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 93671 event pairs, 337 based on Foata normal form. 473/11788 useless extension candidates. Maximal degree in co-relation 94233. Up to 8715 conditions per place. [2021-03-24 17:45:03,991 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4158 selfloop transitions, 789 changer transitions 2/4965 dead transitions. [2021-03-24 17:45:03,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1313 places, 4965 transitions, 74499 flow [2021-03-24 17:45:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-24 17:45:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-24 17:45:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1178 transitions. [2021-03-24 17:45:03,992 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6041025641025641 [2021-03-24 17:45:03,993 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1178 transitions. [2021-03-24 17:45:03,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1178 transitions. [2021-03-24 17:45:03,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:45:03,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1178 transitions. [2021-03-24 17:45:03,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.205128205128204) internal successors, (1178), 39 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:03,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 50.0) internal successors, (2000), 40 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:03,995 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 50.0) internal successors, (2000), 40 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:03,995 INFO L185 Difference]: Start difference. First operand has 1277 places, 4835 transitions, 61914 flow. Second operand 39 states and 1178 transitions. [2021-03-24 17:45:03,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1313 places, 4965 transitions, 74499 flow [2021-03-24 17:45:13,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1302 places, 4965 transitions, 71986 flow, removed 957 selfloop flow, removed 11 redundant places. [2021-03-24 17:45:13,414 INFO L241 Difference]: Finished difference. Result has 1311 places, 4933 transitions, 63331 flow [2021-03-24 17:45:13,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=59405, PETRI_DIFFERENCE_MINUEND_PLACES=1264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=698, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=63331, PETRI_PLACES=1311, PETRI_TRANSITIONS=4933} [2021-03-24 17:45:13,418 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1264 predicate places. [2021-03-24 17:45:13,418 INFO L480 AbstractCegarLoop]: Abstraction has has 1311 places, 4933 transitions, 63331 flow [2021-03-24 17:45:13,419 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) [2021-03-24 17:45:13,419 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:45:13,419 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:45:13,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 17:45:13,419 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:45:13,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:45:13,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2142598141, now seen corresponding path program 23 times [2021-03-24 17:45:13,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:45:13,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231455685] [2021-03-24 17:45:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:45:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:45:13,453 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:45:13,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:45:13,459 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:45:13,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:45:13,467 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:45:13,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:45:13,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:13,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:13,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:13,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:13,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:13,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:13,672 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:45:13,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:45:13,695 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:45:13,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:45:13,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231455685] [2021-03-24 17:45:13,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:45:13,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:45:13,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783041927] [2021-03-24 17:45:13,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:45:13,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:45:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:45:13,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:45:13,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:45:13,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1311 places, 4933 transitions, 63331 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) [2021-03-24 17:45:13,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:45:13,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:45:13,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:45:25,393 INFO L129 PetriNetUnfolder]: 6122/11705 cut-off events. [2021-03-24 17:45:25,394 INFO L130 PetriNetUnfolder]: For 377490/380813 co-relation queries the response was YES. [2021-03-24 17:45:26,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101840 conditions, 11705 events. 6122/11705 cut-off events. For 377490/380813 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 97179 event pairs, 341 based on Foata normal form. 471/12137 useless extension candidates. Maximal degree in co-relation 101459. Up to 8841 conditions per place. [2021-03-24 17:45:26,230 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4287 selfloop transitions, 810 changer transitions 4/5117 dead transitions. [2021-03-24 17:45:26,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1374 places, 5117 transitions, 81726 flow [2021-03-24 17:45:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-03-24 17:45:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-03-24 17:45:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 1965 transitions. [2021-03-24 17:45:26,232 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2021-03-24 17:45:26,232 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 1965 transitions. [2021-03-24 17:45:26,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 1965 transitions. [2021-03-24 17:45:26,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:45:26,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 1965 transitions. [2021-03-24 17:45:26,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 29.772727272727273) internal successors, (1965), 66 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:26,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 50.0) internal successors, (3350), 67 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:26,237 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 50.0) internal successors, (3350), 67 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:26,237 INFO L185 Difference]: Start difference. First operand has 1311 places, 4933 transitions, 63331 flow. Second operand 66 states and 1965 transitions. [2021-03-24 17:45:26,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1374 places, 5117 transitions, 81726 flow [2021-03-24 17:45:37,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1362 places, 5117 transitions, 79218 flow, removed 862 selfloop flow, removed 12 redundant places. [2021-03-24 17:45:37,799 INFO L241 Difference]: Finished difference. Result has 1374 places, 5086 transitions, 69781 flow [2021-03-24 17:45:37,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=60829, PETRI_DIFFERENCE_MINUEND_PLACES=1297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=679, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=69781, PETRI_PLACES=1374, PETRI_TRANSITIONS=5086} [2021-03-24 17:45:37,803 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1327 predicate places. [2021-03-24 17:45:37,803 INFO L480 AbstractCegarLoop]: Abstraction has has 1374 places, 5086 transitions, 69781 flow [2021-03-24 17:45:37,804 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) [2021-03-24 17:45:37,804 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:45:37,804 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:45:37,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 17:45:37,804 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:45:37,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:45:37,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1912333657, now seen corresponding path program 24 times [2021-03-24 17:45:37,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:45:37,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593581975] [2021-03-24 17:45:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:45:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:45:37,821 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:45:37,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:45:37,826 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:45:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:45:37,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:45:37,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:37,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:37,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:37,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:37,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:37,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:37,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:37,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:37,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:37,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:38,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:38,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:38,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:38,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:38,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:45:38,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:45:38,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:45:38,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:45:38,093 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:45:38,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:45:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:45:38,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593581975] [2021-03-24 17:45:38,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:45:38,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:45:38,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433546113] [2021-03-24 17:45:38,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:45:38,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:45:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:45:38,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:45:38,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:45:38,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1374 places, 5086 transitions, 69781 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) [2021-03-24 17:45:38,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:45:38,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:45:38,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:45:54,464 INFO L129 PetriNetUnfolder]: 6556/12506 cut-off events. [2021-03-24 17:45:54,464 INFO L130 PetriNetUnfolder]: For 508660/512977 co-relation queries the response was YES. [2021-03-24 17:45:55,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115650 conditions, 12506 events. 6556/12506 cut-off events. For 508660/512977 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104854 event pairs, 363 based on Foata normal form. 827/13293 useless extension candidates. Maximal degree in co-relation 115254. Up to 9298 conditions per place. [2021-03-24 17:45:55,715 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4420 selfloop transitions, 1132 changer transitions 5/5573 dead transitions. [2021-03-24 17:45:55,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1435 places, 5573 transitions, 92464 flow [2021-03-24 17:45:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-03-24 17:45:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-03-24 17:45:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1976 transitions. [2021-03-24 17:45:55,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.608 [2021-03-24 17:45:55,717 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 1976 transitions. [2021-03-24 17:45:55,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 1976 transitions. [2021-03-24 17:45:55,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:45:55,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 1976 transitions. [2021-03-24 17:45:55,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 30.4) internal successors, (1976), 65 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:55,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 50.0) internal successors, (3300), 66 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:55,723 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 50.0) internal successors, (3300), 66 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:45:55,723 INFO L185 Difference]: Start difference. First operand has 1374 places, 5086 transitions, 69781 flow. Second operand 65 states and 1976 transitions. [2021-03-24 17:45:55,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1435 places, 5573 transitions, 92464 flow [2021-03-24 17:46:10,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1423 places, 5573 transitions, 85281 flow, removed 3179 selfloop flow, removed 12 redundant places. [2021-03-24 17:46:10,329 INFO L241 Difference]: Finished difference. Result has 1441 places, 5469 transitions, 75517 flow [2021-03-24 17:46:10,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=62672, PETRI_DIFFERENCE_MINUEND_PLACES=1359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=800, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=75517, PETRI_PLACES=1441, PETRI_TRANSITIONS=5469} [2021-03-24 17:46:10,334 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1394 predicate places. [2021-03-24 17:46:10,334 INFO L480 AbstractCegarLoop]: Abstraction has has 1441 places, 5469 transitions, 75517 flow [2021-03-24 17:46:10,334 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) [2021-03-24 17:46:10,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:46:10,334 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:46:10,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 17:46:10,335 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:46:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:46:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1683343709, now seen corresponding path program 25 times [2021-03-24 17:46:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:46:10,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222165593] [2021-03-24 17:46:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:46:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:46:10,351 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:46:10,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:46:10,357 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:46:10,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:46:10,366 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:46:10,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:46:10,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:10,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:10,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:10,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:10,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:10,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:10,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:46:10,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:46:10,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:46:10,676 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:46:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:46:10,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222165593] [2021-03-24 17:46:10,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:46:10,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:46:10,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658211016] [2021-03-24 17:46:10,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:46:10,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:46:10,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:46:10,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:46:10,681 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:46:10,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1441 places, 5469 transitions, 75517 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) [2021-03-24 17:46:10,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:46:10,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:46:10,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:46:16,238 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-24 17:46:26,599 INFO L129 PetriNetUnfolder]: 6728/12865 cut-off events. [2021-03-24 17:46:26,599 INFO L130 PetriNetUnfolder]: For 523758/527298 co-relation queries the response was YES. [2021-03-24 17:46:27,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119991 conditions, 12865 events. 6728/12865 cut-off events. For 523758/527298 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 108462 event pairs, 263 based on Foata normal form. 473/13300 useless extension candidates. Maximal degree in co-relation 119581. Up to 9761 conditions per place. [2021-03-24 17:46:27,812 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4807 selfloop transitions, 857 changer transitions 6/5686 dead transitions. [2021-03-24 17:46:27,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1487 places, 5686 transitions, 94377 flow [2021-03-24 17:46:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-24 17:46:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-03-24 17:46:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1466 transitions. [2021-03-24 17:46:27,814 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5983673469387755 [2021-03-24 17:46:27,814 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 1466 transitions. [2021-03-24 17:46:27,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 1466 transitions. [2021-03-24 17:46:27,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:46:27,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 1466 transitions. [2021-03-24 17:46:27,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 29.918367346938776) internal successors, (1466), 49 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:27,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 50.0) internal successors, (2500), 50 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:27,818 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 50.0) internal successors, (2500), 50 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:27,819 INFO L185 Difference]: Start difference. First operand has 1441 places, 5469 transitions, 75517 flow. Second operand 49 states and 1466 transitions. [2021-03-24 17:46:27,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1487 places, 5686 transitions, 94377 flow [2021-03-24 17:46:41,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1480 places, 5686 transitions, 89316 flow, removed 2303 selfloop flow, removed 7 redundant places. [2021-03-24 17:46:41,754 INFO L241 Difference]: Finished difference. Result has 1497 places, 5638 transitions, 77871 flow [2021-03-24 17:46:41,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=70507, PETRI_DIFFERENCE_MINUEND_PLACES=1432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=707, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=77871, PETRI_PLACES=1497, PETRI_TRANSITIONS=5638} [2021-03-24 17:46:41,759 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1450 predicate places. [2021-03-24 17:46:41,759 INFO L480 AbstractCegarLoop]: Abstraction has has 1497 places, 5638 transitions, 77871 flow [2021-03-24 17:46:41,759 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) [2021-03-24 17:46:41,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:46:41,759 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:46:41,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 17:46:41,760 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:46:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:46:41,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1881829407, now seen corresponding path program 26 times [2021-03-24 17:46:41,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:46:41,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075395271] [2021-03-24 17:46:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:46:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:46:41,777 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:46:41,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:46:41,783 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:46:41,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:46:41,792 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:46:41,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:46:41,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:41,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:41,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:41,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:41,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:41,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:41,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:41,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:41,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:41,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:41,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:46:42,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:42,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:42,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:46:42,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:46:42,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:46:42,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:46:42,102 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:46:42,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:46:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:46:42,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075395271] [2021-03-24 17:46:42,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:46:42,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:46:42,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100164659] [2021-03-24 17:46:42,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:46:42,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:46:42,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:46:42,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:46:42,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:46:42,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1497 places, 5638 transitions, 77871 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) [2021-03-24 17:46:42,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:46:42,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:46:42,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:46:58,713 INFO L129 PetriNetUnfolder]: 6758/12950 cut-off events. [2021-03-24 17:46:58,713 INFO L130 PetriNetUnfolder]: For 496096/499746 co-relation queries the response was YES. [2021-03-24 17:46:59,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118273 conditions, 12950 events. 6758/12950 cut-off events. For 496096/499746 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 109396 event pairs, 427 based on Foata normal form. 505/13413 useless extension candidates. Maximal degree in co-relation 117846. Up to 9990 conditions per place. [2021-03-24 17:46:59,084 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4925 selfloop transitions, 773 changer transitions 3/5717 dead transitions. [2021-03-24 17:46:59,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1524 places, 5717 transitions, 91996 flow [2021-03-24 17:46:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-24 17:46:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-03-24 17:46:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 959 transitions. [2021-03-24 17:46:59,086 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.599375 [2021-03-24 17:46:59,086 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 959 transitions. [2021-03-24 17:46:59,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 959 transitions. [2021-03-24 17:46:59,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:46:59,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 959 transitions. [2021-03-24 17:46:59,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 29.96875) internal successors, (959), 32 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:59,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 50.0) internal successors, (1650), 33 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:59,088 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 50.0) internal successors, (1650), 33 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:46:59,088 INFO L185 Difference]: Start difference. First operand has 1497 places, 5638 transitions, 77871 flow. Second operand 32 states and 959 transitions. [2021-03-24 17:46:59,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1524 places, 5717 transitions, 91996 flow [2021-03-24 17:47:13,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1514 places, 5717 transitions, 88567 flow, removed 1425 selfloop flow, removed 10 redundant places. [2021-03-24 17:47:13,314 INFO L241 Difference]: Finished difference. Result has 1520 places, 5689 transitions, 77793 flow [2021-03-24 17:47:13,319 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=74676, PETRI_DIFFERENCE_MINUEND_PLACES=1483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=726, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=77793, PETRI_PLACES=1520, PETRI_TRANSITIONS=5689} [2021-03-24 17:47:13,319 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1473 predicate places. [2021-03-24 17:47:13,319 INFO L480 AbstractCegarLoop]: Abstraction has has 1520 places, 5689 transitions, 77793 flow [2021-03-24 17:47:13,319 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) [2021-03-24 17:47:13,319 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:47:13,319 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:47:13,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 17:47:13,320 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:47:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:47:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash -316346447, now seen corresponding path program 27 times [2021-03-24 17:47:13,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:47:13,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5697242] [2021-03-24 17:47:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:47:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:47:13,379 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:47:13,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:47:13,400 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:47:13,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:47:13,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:13,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:13,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:13,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:47:13,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:47:13,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:13,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:47:13,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:47:13,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:47:13,660 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:47:13,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:47:13,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5697242] [2021-03-24 17:47:13,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:47:13,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:47:13,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167103094] [2021-03-24 17:47:13,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:47:13,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:47:13,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:47:13,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:47:13,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:47:13,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1520 places, 5689 transitions, 77793 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) [2021-03-24 17:47:13,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:47:13,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:47:13,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:47:20,135 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-03-24 17:47:33,367 INFO L129 PetriNetUnfolder]: 7587/14405 cut-off events. [2021-03-24 17:47:33,367 INFO L130 PetriNetUnfolder]: For 664609/668727 co-relation queries the response was YES. [2021-03-24 17:47:33,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140391 conditions, 14405 events. 7587/14405 cut-off events. For 664609/668727 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 123044 event pairs, 300 based on Foata normal form. 1023/15392 useless extension candidates. Maximal degree in co-relation 139971. Up to 9704 conditions per place. [2021-03-24 17:47:33,836 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 4452 selfloop transitions, 2227 changer transitions 10/6705 dead transitions. [2021-03-24 17:47:33,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1596 places, 6705 transitions, 116617 flow [2021-03-24 17:47:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-03-24 17:47:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-03-24 17:47:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 2417 transitions. [2021-03-24 17:47:33,840 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6118987341772152 [2021-03-24 17:47:33,840 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 2417 transitions. [2021-03-24 17:47:33,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 2417 transitions. [2021-03-24 17:47:33,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:47:33,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 2417 transitions. [2021-03-24 17:47:33,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 30.59493670886076) internal successors, (2417), 79 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:47:33,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 50.0) internal successors, (4000), 80 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:47:33,846 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 50.0) internal successors, (4000), 80 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:47:33,846 INFO L185 Difference]: Start difference. First operand has 1520 places, 5689 transitions, 77793 flow. Second operand 79 states and 2417 transitions. [2021-03-24 17:47:33,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1596 places, 6705 transitions, 116617 flow [2021-03-24 17:47:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1579 places, 6705 transitions, 114374 flow, removed 604 selfloop flow, removed 17 redundant places. [2021-03-24 17:47:53,686 INFO L241 Difference]: Finished difference. Result has 1616 places, 6462 transitions, 103081 flow [2021-03-24 17:47:53,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=75909, PETRI_DIFFERENCE_MINUEND_PLACES=1501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=103081, PETRI_PLACES=1616, PETRI_TRANSITIONS=6462} [2021-03-24 17:47:53,690 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1569 predicate places. [2021-03-24 17:47:53,690 INFO L480 AbstractCegarLoop]: Abstraction has has 1616 places, 6462 transitions, 103081 flow [2021-03-24 17:47:53,690 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) [2021-03-24 17:47:53,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:47:53,690 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:47:53,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 17:47:53,690 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:47:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:47:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1539783177, now seen corresponding path program 28 times [2021-03-24 17:47:53,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:47:53,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484825318] [2021-03-24 17:47:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:47:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:47:53,727 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:47:53,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:47:53,734 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:47:53,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:47:53,742 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:47:53,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:47:53,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:47:53,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:53,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:47:53,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:47:53,949 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:47:53,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:47:53,977 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:47:53,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:47:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:47:53,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484825318] [2021-03-24 17:47:53,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:47:53,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:47:53,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892848852] [2021-03-24 17:47:53,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:47:53,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:47:53,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:47:53,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:47:53,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:47:53,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1616 places, 6462 transitions, 103081 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) [2021-03-24 17:47:53,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:47:53,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:47:53,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:48:10,599 INFO L129 PetriNetUnfolder]: 7664/14532 cut-off events. [2021-03-24 17:48:10,599 INFO L130 PetriNetUnfolder]: For 815832/821006 co-relation queries the response was YES. [2021-03-24 17:48:11,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151420 conditions, 14532 events. 7664/14532 cut-off events. For 815832/821006 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 123985 event pairs, 368 based on Foata normal form. 502/14980 useless extension candidates. Maximal degree in co-relation 150955. Up to 11433 conditions per place. [2021-03-24 17:48:11,166 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 5869 selfloop transitions, 704 changer transitions 3/6592 dead transitions. [2021-03-24 17:48:11,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1645 places, 6592 transitions, 121351 flow [2021-03-24 17:48:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-24 17:48:11,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-24 17:48:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1072 transitions. [2021-03-24 17:48:11,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2021-03-24 17:48:11,168 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1072 transitions. [2021-03-24 17:48:11,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1072 transitions. [2021-03-24 17:48:11,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:48:11,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1072 transitions. [2021-03-24 17:48:11,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 29.77777777777778) internal successors, (1072), 36 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:48:11,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 50.0) internal successors, (1850), 37 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) [2021-03-24 17:48:11,170 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 50.0) internal successors, (1850), 37 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) [2021-03-24 17:48:11,170 INFO L185 Difference]: Start difference. First operand has 1616 places, 6462 transitions, 103081 flow. Second operand 36 states and 1072 transitions. [2021-03-24 17:48:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1645 places, 6592 transitions, 121351 flow [2021-03-24 17:48:43,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1634 places, 6592 transitions, 111710 flow, removed 4529 selfloop flow, removed 11 redundant places. [2021-03-24 17:48:43,141 INFO L241 Difference]: Finished difference. Result has 1645 places, 6570 transitions, 99251 flow [2021-03-24 17:48:43,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94028, PETRI_DIFFERENCE_MINUEND_PLACES=1599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=99251, PETRI_PLACES=1645, PETRI_TRANSITIONS=6570} [2021-03-24 17:48:43,145 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1598 predicate places. [2021-03-24 17:48:43,145 INFO L480 AbstractCegarLoop]: Abstraction has has 1645 places, 6570 transitions, 99251 flow [2021-03-24 17:48:43,146 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) [2021-03-24 17:48:43,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:48:43,146 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:48:43,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 17:48:43,146 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:48:43,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:48:43,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1179418629, now seen corresponding path program 29 times [2021-03-24 17:48:43,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:48:43,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20056288] [2021-03-24 17:48:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:48:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:48:43,189 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:48:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:48:43,194 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:48:43,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:48:43,203 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:48:43,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:48:43,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:48:43,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:48:43,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:48:43,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:48:43,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:48:43,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:48:43,425 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:48:43,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:48:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:48:43,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20056288] [2021-03-24 17:48:43,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:48:43,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:48:43,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969551436] [2021-03-24 17:48:43,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:48:43,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:48:43,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:48:43,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:48:43,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:48:43,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1645 places, 6570 transitions, 99251 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) [2021-03-24 17:48:43,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:48:43,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:48:43,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:48:59,668 INFO L129 PetriNetUnfolder]: 7762/14750 cut-off events. [2021-03-24 17:48:59,668 INFO L130 PetriNetUnfolder]: For 727274/731867 co-relation queries the response was YES. [2021-03-24 17:49:00,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147101 conditions, 14750 events. 7762/14750 cut-off events. For 727274/731867 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 126406 event pairs, 341 based on Foata normal form. 493/15195 useless extension candidates. Maximal degree in co-relation 146667. Up to 11550 conditions per place. [2021-03-24 17:49:00,128 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 5908 selfloop transitions, 772 changer transitions 3/6699 dead transitions. [2021-03-24 17:49:00,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1675 places, 6699 transitions, 117489 flow [2021-03-24 17:49:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-24 17:49:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-03-24 17:49:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 990 transitions. [2021-03-24 17:49:00,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6 [2021-03-24 17:49:00,130 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 990 transitions. [2021-03-24 17:49:00,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 990 transitions. [2021-03-24 17:49:00,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:49:00,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 990 transitions. [2021-03-24 17:49:00,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 30.0) internal successors, (990), 33 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:00,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 50.0) internal successors, (1700), 34 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:00,132 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 50.0) internal successors, (1700), 34 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:00,132 INFO L185 Difference]: Start difference. First operand has 1645 places, 6570 transitions, 99251 flow. Second operand 33 states and 990 transitions. [2021-03-24 17:49:00,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1675 places, 6699 transitions, 117489 flow [2021-03-24 17:49:22,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1667 places, 6699 transitions, 113433 flow, removed 1675 selfloop flow, removed 8 redundant places. [2021-03-24 17:49:22,516 INFO L241 Difference]: Finished difference. Result has 1675 places, 6674 transitions, 100772 flow [2021-03-24 17:49:22,520 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=95453, PETRI_DIFFERENCE_MINUEND_PLACES=1635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=677, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5877, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=100772, PETRI_PLACES=1675, PETRI_TRANSITIONS=6674} [2021-03-24 17:49:22,520 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1628 predicate places. [2021-03-24 17:49:22,520 INFO L480 AbstractCegarLoop]: Abstraction has has 1675 places, 6674 transitions, 100772 flow [2021-03-24 17:49:22,520 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) [2021-03-24 17:49:22,520 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:49:22,520 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:49:22,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 17:49:22,520 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:49:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:49:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash 846462711, now seen corresponding path program 30 times [2021-03-24 17:49:22,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:49:22,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874132460] [2021-03-24 17:49:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:49:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:49:22,540 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:49:22,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:49:22,546 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:49:22,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:49:22,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:49:22,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:49:22,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:49:22,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:49:22,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:49:22,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:49:22,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:49:22,872 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:49:22,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:49:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:49:22,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874132460] [2021-03-24 17:49:22,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:49:22,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:49:22,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555202404] [2021-03-24 17:49:22,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:49:22,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:49:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:49:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:49:22,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:49:22,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1675 places, 6674 transitions, 100772 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) [2021-03-24 17:49:22,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:49:22,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:49:22,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:49:33,997 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-03-24 17:49:39,654 INFO L129 PetriNetUnfolder]: 7807/14914 cut-off events. [2021-03-24 17:49:39,654 INFO L130 PetriNetUnfolder]: For 763684/769154 co-relation queries the response was YES. [2021-03-24 17:49:40,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149050 conditions, 14914 events. 7807/14914 cut-off events. For 763684/769154 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 128820 event pairs, 411 based on Foata normal form. 726/15583 useless extension candidates. Maximal degree in co-relation 148608. Up to 11523 conditions per place. [2021-03-24 17:49:40,219 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 5781 selfloop transitions, 980 changer transitions 2/6779 dead transitions. [2021-03-24 17:49:40,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1715 places, 6779 transitions, 117856 flow [2021-03-24 17:49:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-24 17:49:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-03-24 17:49:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1285 transitions. [2021-03-24 17:49:40,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5976744186046512 [2021-03-24 17:49:40,222 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1285 transitions. [2021-03-24 17:49:40,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1285 transitions. [2021-03-24 17:49:40,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:49:40,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1285 transitions. [2021-03-24 17:49:40,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 29.88372093023256) internal successors, (1285), 43 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:40,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 50.0) internal successors, (2200), 44 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:40,225 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 50.0) internal successors, (2200), 44 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:49:40,225 INFO L185 Difference]: Start difference. First operand has 1675 places, 6674 transitions, 100772 flow. Second operand 43 states and 1285 transitions. [2021-03-24 17:49:40,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1715 places, 6779 transitions, 117856 flow [2021-03-24 17:50:03,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1706 places, 6779 transitions, 114612 flow, removed 1267 selfloop flow, removed 9 redundant places. [2021-03-24 17:50:03,248 INFO L241 Difference]: Finished difference. Result has 1717 places, 6748 transitions, 102480 flow [2021-03-24 17:50:03,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=97532, PETRI_DIFFERENCE_MINUEND_PLACES=1664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=915, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=102480, PETRI_PLACES=1717, PETRI_TRANSITIONS=6748} [2021-03-24 17:50:03,251 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1670 predicate places. [2021-03-24 17:50:03,251 INFO L480 AbstractCegarLoop]: Abstraction has has 1717 places, 6748 transitions, 102480 flow [2021-03-24 17:50:03,251 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) [2021-03-24 17:50:03,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:50:03,252 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:50:03,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 17:50:03,252 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:50:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:50:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1116187501, now seen corresponding path program 31 times [2021-03-24 17:50:03,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:50:03,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718944423] [2021-03-24 17:50:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:50:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:50:03,272 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:50:03,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:50:03,282 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:50:03,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:50:03,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:03,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:03,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:03,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:03,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:03,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:50:03,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:03,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:50:03,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:50:03,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:50:03,531 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:50:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:50:03,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718944423] [2021-03-24 17:50:03,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:50:03,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:50:03,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252105957] [2021-03-24 17:50:03,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:50:03,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:50:03,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:50:03,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:50:03,535 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:50:03,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1717 places, 6748 transitions, 102480 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) [2021-03-24 17:50:03,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:50:03,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:50:03,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:50:22,049 INFO L129 PetriNetUnfolder]: 8165/15563 cut-off events. [2021-03-24 17:50:22,049 INFO L130 PetriNetUnfolder]: For 882994/887477 co-relation queries the response was YES. [2021-03-24 17:50:22,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162793 conditions, 15563 events. 8165/15563 cut-off events. For 882994/887477 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 135107 event pairs, 339 based on Foata normal form. 1125/16651 useless extension candidates. Maximal degree in co-relation 162341. Up to 11504 conditions per place. [2021-03-24 17:50:22,533 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 5628 selfloop transitions, 1523 changer transitions 2/7169 dead transitions. [2021-03-24 17:50:22,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1789 places, 7169 transitions, 132006 flow [2021-03-24 17:50:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-03-24 17:50:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-03-24 17:50:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 2260 transitions. [2021-03-24 17:50:22,546 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6026666666666667 [2021-03-24 17:50:22,546 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 2260 transitions. [2021-03-24 17:50:22,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 2260 transitions. [2021-03-24 17:50:22,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:50:22,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 2260 transitions. [2021-03-24 17:50:22,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 30.133333333333333) internal successors, (2260), 75 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:50:22,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 50.0) internal successors, (3800), 76 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:50:22,551 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 50.0) internal successors, (3800), 76 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:50:22,551 INFO L185 Difference]: Start difference. First operand has 1717 places, 6748 transitions, 102480 flow. Second operand 75 states and 2260 transitions. [2021-03-24 17:50:22,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1789 places, 7169 transitions, 132006 flow [2021-03-24 17:50:57,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1773 places, 7169 transitions, 128437 flow, removed 1170 selfloop flow, removed 16 redundant places. [2021-03-24 17:50:57,840 INFO L241 Difference]: Finished difference. Result has 1795 places, 7091 transitions, 115101 flow [2021-03-24 17:50:57,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=99023, PETRI_DIFFERENCE_MINUEND_PLACES=1699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=115101, PETRI_PLACES=1795, PETRI_TRANSITIONS=7091} [2021-03-24 17:50:57,843 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1748 predicate places. [2021-03-24 17:50:57,843 INFO L480 AbstractCegarLoop]: Abstraction has has 1795 places, 7091 transitions, 115101 flow [2021-03-24 17:50:57,843 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) [2021-03-24 17:50:57,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:50:57,844 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:50:57,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 17:50:57,844 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:50:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:50:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash 526383463, now seen corresponding path program 32 times [2021-03-24 17:50:57,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:50:57,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266326843] [2021-03-24 17:50:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:50:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:50:57,864 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:50:57,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:50:57,870 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:50:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:50:57,878 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:50:57,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:50:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:57,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:57,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:58,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:58,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:58,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:58,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:58,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:58,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:50:58,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:58,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:58,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:50:58,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:50:58,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:50:58,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:50:58,115 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:50:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:50:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:50:58,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266326843] [2021-03-24 17:50:58,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:50:58,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:50:58,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312959256] [2021-03-24 17:50:58,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:50:58,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:50:58,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:50:58,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:50:58,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:50:58,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1795 places, 7091 transitions, 115101 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) [2021-03-24 17:50:58,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:50:58,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:50:58,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:51:18,440 INFO L129 PetriNetUnfolder]: 8172/15568 cut-off events. [2021-03-24 17:51:18,440 INFO L130 PetriNetUnfolder]: For 978530/985020 co-relation queries the response was YES. [2021-03-24 17:51:19,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166608 conditions, 15568 events. 8172/15568 cut-off events. For 978530/985020 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 135155 event pairs, 420 based on Foata normal form. 541/16056 useless extension candidates. Maximal degree in co-relation 166134. Up to 12282 conditions per place. [2021-03-24 17:51:19,387 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 6360 selfloop transitions, 746 changer transitions 4/7126 dead transitions. [2021-03-24 17:51:19,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1818 places, 7126 transitions, 131101 flow [2021-03-24 17:51:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-24 17:51:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-03-24 17:51:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 775 transitions. [2021-03-24 17:51:19,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 17:51:19,390 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 775 transitions. [2021-03-24 17:51:19,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 775 transitions. [2021-03-24 17:51:19,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:51:19,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 775 transitions. [2021-03-24 17:51:19,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 29.807692307692307) internal successors, (775), 26 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:51:19,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 50.0) internal successors, (1350), 27 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:51:19,393 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 50.0) internal successors, (1350), 27 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:51:19,393 INFO L185 Difference]: Start difference. First operand has 1795 places, 7091 transitions, 115101 flow. Second operand 26 states and 775 transitions. [2021-03-24 17:51:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1818 places, 7126 transitions, 131101 flow [2021-03-24 17:51:58,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1807 places, 7126 transitions, 123547 flow, removed 3304 selfloop flow, removed 11 redundant places. [2021-03-24 17:51:58,450 INFO L241 Difference]: Finished difference. Result has 1810 places, 7112 transitions, 110164 flow [2021-03-24 17:51:58,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=107549, PETRI_DIFFERENCE_MINUEND_PLACES=1782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=110164, PETRI_PLACES=1810, PETRI_TRANSITIONS=7112} [2021-03-24 17:51:58,454 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1763 predicate places. [2021-03-24 17:51:58,454 INFO L480 AbstractCegarLoop]: Abstraction has has 1810 places, 7112 transitions, 110164 flow [2021-03-24 17:51:58,454 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) [2021-03-24 17:51:58,455 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:51:58,455 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:51:58,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 17:51:58,455 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:51:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:51:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2145591307, now seen corresponding path program 33 times [2021-03-24 17:51:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:51:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025514927] [2021-03-24 17:51:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:51:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:51:58,471 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:51:58,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:51:58,476 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:51:58,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:51:58,485 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:51:58,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:51:58,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:51:58,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:51:58,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:51:58,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:51:58,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:51:58,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:51:58,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:51:58,785 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:51:58,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:51:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:51:58,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025514927] [2021-03-24 17:51:58,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:51:58,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:51:58,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733301037] [2021-03-24 17:51:58,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:51:58,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:51:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:51:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:51:58,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:51:58,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1810 places, 7112 transitions, 110164 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) [2021-03-24 17:51:58,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:51:58,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:51:58,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:52:13,004 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-03-24 17:52:16,205 INFO L129 PetriNetUnfolder]: 8214/15780 cut-off events. [2021-03-24 17:52:16,205 INFO L130 PetriNetUnfolder]: For 951190/956283 co-relation queries the response was YES. [2021-03-24 17:52:16,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165231 conditions, 15780 events. 8214/15780 cut-off events. For 951190/956283 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 138353 event pairs, 410 based on Foata normal form. 500/16234 useless extension candidates. Maximal degree in co-relation 164754. Up to 12269 conditions per place. [2021-03-24 17:52:16,931 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 6351 selfloop transitions, 845 changer transitions 5/7217 dead transitions. [2021-03-24 17:52:16,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1846 places, 7217 transitions, 129165 flow [2021-03-24 17:52:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-24 17:52:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-24 17:52:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1179 transitions. [2021-03-24 17:52:16,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5895 [2021-03-24 17:52:16,933 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1179 transitions. [2021-03-24 17:52:16,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1179 transitions. [2021-03-24 17:52:16,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:52:16,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1179 transitions. [2021-03-24 17:52:16,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 29.475) internal successors, (1179), 40 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:52:16,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 50.0) internal successors, (2050), 41 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:52:16,936 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 50.0) internal successors, (2050), 41 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:52:16,936 INFO L185 Difference]: Start difference. First operand has 1810 places, 7112 transitions, 110164 flow. Second operand 40 states and 1179 transitions. [2021-03-24 17:52:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1846 places, 7217 transitions, 129165 flow [2021-03-24 17:52:58,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1836 places, 7217 transitions, 127072 flow, removed 610 selfloop flow, removed 10 redundant places. [2021-03-24 17:52:58,716 INFO L241 Difference]: Finished difference. Result has 1847 places, 7188 transitions, 113256 flow [2021-03-24 17:52:58,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=108137, PETRI_DIFFERENCE_MINUEND_PLACES=1797, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=113256, PETRI_PLACES=1847, PETRI_TRANSITIONS=7188} [2021-03-24 17:52:58,720 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1800 predicate places. [2021-03-24 17:52:58,720 INFO L480 AbstractCegarLoop]: Abstraction has has 1847 places, 7188 transitions, 113256 flow [2021-03-24 17:52:58,720 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) [2021-03-24 17:52:58,720 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:52:58,720 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:52:58,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 17:52:58,720 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:52:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:52:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash 536036821, now seen corresponding path program 34 times [2021-03-24 17:52:58,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:52:58,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624475885] [2021-03-24 17:52:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:52:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:52:58,736 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:52:58,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:52:58,742 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:52:58,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:52:58,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:52:58,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:52:58,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:52:58,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:52:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:52:58,980 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:52:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:52:59,003 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:52:59,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:52:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:52:59,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624475885] [2021-03-24 17:52:59,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:52:59,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-24 17:52:59,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523610771] [2021-03-24 17:52:59,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-24 17:52:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:52:59,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-24 17:52:59,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-24 17:52:59,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:52:59,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1847 places, 7188 transitions, 113256 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) [2021-03-24 17:52:59,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:52:59,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:52:59,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:53:20,232 INFO L129 PetriNetUnfolder]: 8362/16097 cut-off events. [2021-03-24 17:53:20,232 INFO L130 PetriNetUnfolder]: For 1052853/1058417 co-relation queries the response was YES. [2021-03-24 17:53:20,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174760 conditions, 16097 events. 8362/16097 cut-off events. For 1052853/1058417 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 141967 event pairs, 443 based on Foata normal form. 831/16883 useless extension candidates. Maximal degree in co-relation 174272. Up to 12367 conditions per place. [2021-03-24 17:53:20,991 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 6280 selfloop transitions, 1119 changer transitions 2/7417 dead transitions. [2021-03-24 17:53:20,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1897 places, 7417 transitions, 139054 flow [2021-03-24 17:53:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-24 17:53:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-03-24 17:53:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1625 transitions. [2021-03-24 17:53:20,993 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2021-03-24 17:53:20,993 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 1625 transitions. [2021-03-24 17:53:20,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 1625 transitions. [2021-03-24 17:53:20,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:53:20,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 1625 transitions. [2021-03-24 17:53:20,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 30.09259259259259) internal successors, (1625), 54 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:53:20,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 50.0) internal successors, (2750), 55 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:53:20,996 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 50.0) internal successors, (2750), 55 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:53:20,996 INFO L185 Difference]: Start difference. First operand has 1847 places, 7188 transitions, 113256 flow. Second operand 54 states and 1625 transitions. [2021-03-24 17:53:20,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1897 places, 7417 transitions, 139054 flow [2021-03-24 17:53:49,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1886 places, 7417 transitions, 135441 flow, removed 1349 selfloop flow, removed 11 redundant places. [2021-03-24 17:53:49,713 INFO L241 Difference]: Finished difference. Result has 1897 places, 7364 transitions, 121738 flow [2021-03-24 17:53:49,715 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=109695, PETRI_DIFFERENCE_MINUEND_PLACES=1833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=962, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=121738, PETRI_PLACES=1897, PETRI_TRANSITIONS=7364} [2021-03-24 17:53:49,715 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1850 predicate places. [2021-03-24 17:53:49,715 INFO L480 AbstractCegarLoop]: Abstraction has has 1897 places, 7364 transitions, 121738 flow [2021-03-24 17:53:49,715 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) [2021-03-24 17:53:49,716 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:53:49,716 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:53:49,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 17:53:49,716 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:53:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:53:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1002278251, now seen corresponding path program 35 times [2021-03-24 17:53:49,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:53:49,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099863280] [2021-03-24 17:53:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:53:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:53:49,734 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:53:49,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:53:49,740 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:53:49,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:53:49,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:53:49,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:53:49,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:53:49,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:49,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:53:49,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:53:49,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:53:49,986 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-24 17:53:49,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:53:50,015 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:53:50,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:53:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:53:50,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099863280] [2021-03-24 17:53:50,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:53:50,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:53:50,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746351033] [2021-03-24 17:53:50,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:53:50,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:53:50,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:53:50,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:53:50,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:53:50,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1897 places, 7364 transitions, 121738 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) [2021-03-24 17:53:50,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:53:50,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:53:50,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:54:09,935 INFO L129 PetriNetUnfolder]: 8567/16475 cut-off events. [2021-03-24 17:54:09,935 INFO L130 PetriNetUnfolder]: For 1169644/1176657 co-relation queries the response was YES. [2021-03-24 17:54:10,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185501 conditions, 16475 events. 8567/16475 cut-off events. For 1169644/1176657 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 145651 event pairs, 385 based on Foata normal form. 1345/17770 useless extension candidates. Maximal degree in co-relation 185002. Up to 12395 conditions per place. [2021-03-24 17:54:10,641 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 6156 selfloop transitions, 1420 changer transitions 6/7598 dead transitions. [2021-03-24 17:54:10,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1950 places, 7598 transitions, 147600 flow [2021-03-24 17:54:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-24 17:54:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-03-24 17:54:10,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1695 transitions. [2021-03-24 17:54:10,643 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6053571428571428 [2021-03-24 17:54:10,643 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1695 transitions. [2021-03-24 17:54:10,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1695 transitions. [2021-03-24 17:54:10,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:54:10,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1695 transitions. [2021-03-24 17:54:10,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.267857142857142) internal successors, (1695), 56 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:54:10,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 50.0) internal successors, (2850), 57 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:54:10,646 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 50.0) internal successors, (2850), 57 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:54:10,646 INFO L185 Difference]: Start difference. First operand has 1897 places, 7364 transitions, 121738 flow. Second operand 56 states and 1695 transitions. [2021-03-24 17:54:10,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1950 places, 7598 transitions, 147600 flow [2021-03-24 17:55:08,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1938 places, 7598 transitions, 137907 flow, removed 4321 selfloop flow, removed 12 redundant places. [2021-03-24 17:55:08,956 INFO L241 Difference]: Finished difference. Result has 1957 places, 7527 transitions, 122905 flow [2021-03-24 17:55:08,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=112146, PETRI_DIFFERENCE_MINUEND_PLACES=1883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6030, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=122905, PETRI_PLACES=1957, PETRI_TRANSITIONS=7527} [2021-03-24 17:55:08,958 INFO L343 CegarLoopForPetriNet]: 47 programPoint places, 1910 predicate places. [2021-03-24 17:55:08,959 INFO L480 AbstractCegarLoop]: Abstraction has has 1957 places, 7527 transitions, 122905 flow [2021-03-24 17:55:08,959 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) [2021-03-24 17:55:08,959 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 17:55:08,959 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 17:55:08,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 17:55:08,959 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 17:55:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 17:55:08,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1588640537, now seen corresponding path program 36 times [2021-03-24 17:55:08,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 17:55:08,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573336903] [2021-03-24 17:55:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 17:55:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 17:55:08,975 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-24 17:55:08,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 17:55:08,981 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 17:55:08,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 17:55:08,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:08,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:08,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 17:55:09,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:55:09,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 17:55:09,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 17:55:09,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-24 17:55:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 17:55:09,210 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-24 17:55:09,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 17:55:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 17:55:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573336903] [2021-03-24 17:55:09,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 17:55:09,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-24 17:55:09,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7869623] [2021-03-24 17:55:09,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-24 17:55:09,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 17:55:09,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-24 17:55:09,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-24 17:55:09,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2021-03-24 17:55:09,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1957 places, 7527 transitions, 122905 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) [2021-03-24 17:55:09,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 17:55:09,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2021-03-24 17:55:09,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 17:55:28,969 INFO L129 PetriNetUnfolder]: 8598/16566 cut-off events. [2021-03-24 17:55:28,969 INFO L130 PetriNetUnfolder]: For 1215642/1221691 co-relation queries the response was YES. [2021-03-24 17:55:29,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184631 conditions, 16566 events. 8598/16566 cut-off events. For 1215642/1221691 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 147049 event pairs, 436 based on Foata normal form. 800/17307 useless extension candidates. Maximal degree in co-relation 184116. Up to 12975 conditions per place. [2021-03-24 17:55:29,706 INFO L132 encePairwiseOnDemand]: 32/50 looper letters, 6657 selfloop transitions, 931 changer transitions 2/7606 dead transitions. [2021-03-24 17:55:29,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1990 places, 7606 transitions, 141867 flow [2021-03-24 17:55:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-24 17:55:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-03-24 17:55:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1116 transitions. [2021-03-24 17:55:29,708 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6032432432432432 [2021-03-24 17:55:29,708 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1116 transitions. [2021-03-24 17:55:29,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1116 transitions. [2021-03-24 17:55:29,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 17:55:29,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1116 transitions. [2021-03-24 17:55:29,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 30.16216216216216) internal successors, (1116), 37 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:55:29,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 50.0) internal successors, (1900), 38 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:55:29,710 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 50.0) internal successors, (1900), 38 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 17:55:29,710 INFO L185 Difference]: Start difference. First operand has 1957 places, 7527 transitions, 122905 flow. Second operand 37 states and 1116 transitions. [2021-03-24 17:55:29,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1990 places, 7606 transitions, 141867 flow Received shutdown request... [2021-03-24 17:55:45,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 17:55:45,722 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 17:55:45,725 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 17:55:45,725 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 05:55:45 BasicIcfg [2021-03-24 17:55:45,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 17:55:45,725 INFO L168 Benchmark]: Toolchain (without parser) took 809590.90 ms. Allocated memory was 255.9 MB in the beginning and 10.8 GB in the end (delta: 10.6 GB). Free memory was 236.7 MB in the beginning and 4.9 GB in the end (delta: -4.6 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 INFO L168 Benchmark]: Boogie Preprocessor took 21.40 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 INFO L168 Benchmark]: RCFGBuilder took 319.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 237.7 MB in the end (delta: -3.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 INFO L168 Benchmark]: TraceAbstraction took 809208.63 ms. Allocated memory was 255.9 MB in the beginning and 10.8 GB in the end (delta: 10.6 GB). Free memory was 237.7 MB in the beginning and 4.9 GB in the end (delta: -4.6 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. [2021-03-24 17:55:45,726 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.35 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.40 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 319.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 237.7 MB in the end (delta: -3.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 809208.63 ms. Allocated memory was 255.9 MB in the beginning and 10.8 GB in the end (delta: 10.6 GB). Free memory was 237.7 MB in the beginning and 4.9 GB in the end (delta: -4.6 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 110.1ms, 52 PlacesBefore, 47 PlacesAfterwards, 39 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1800 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 781, positive: 705, positive conditional: 0, positive unconditional: 705, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 307, positive: 284, positive conditional: 0, positive unconditional: 284, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 307, positive: 284, positive conditional: 0, positive unconditional: 284, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 781, positive: 421, positive conditional: 0, positive unconditional: 421, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 307, unknown conditional: 0, unknown unconditional: 307] , Statistics on independence cache: Total cache size (in pairs): 177, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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: 8.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 809056.4ms, OverallIterations: 36, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 798585.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 171.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1483 SDtfs, 3159 SDslu, 2345 SDs, 0 SdLazy, 56727 SolverSat, 2389 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21627.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2034 GetRequests, 11 SyntacticMatches, 42 SemanticMatches, 1981 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38478 ImplicationChecksByTransitivity, 45474.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122905occurred in iteration=35, InterpolantAutomatonStates: 1801, 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: 77.2ms SsaConstructionTime, 214.2ms SatisfiabilityAnalysisTime, 9772.6ms InterpolantComputationTime, 1224 NumberOfCodeBlocks, 1224 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1188 ConstructedInterpolants, 0 QuantifiedInterpolants, 16119 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