/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 18:03:32,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 18:03:32,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 18:03:32,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 18:03:32,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 18:03:32,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 18:03:32,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 18:03:32,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 18:03:32,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 18:03:32,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 18:03:32,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 18:03:32,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 18:03:32,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 18:03:32,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 18:03:32,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 18:03:32,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 18:03:32,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 18:03:32,756 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-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 18:03:32,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 18:03:32,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 18:03:32,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 18:03:32,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 18:03:32,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 18:03:32,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 18:03:32,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 18:03:32,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 18:03:32,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 18:03:32,794 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 18:03:33,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 18:03:33,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 18:03:33,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 18:03:33,047 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 18:03:33,048 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 18:03:33,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl [2021-08-13 18:03:33,049 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/security.wvr.bpl' [2021-08-13 18:03:33,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 18:03:33,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 18:03:33,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 18:03:33,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 18:03:33,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 18:03:33,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 18:03:33,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 18:03:33,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 18:03:33,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 18:03:33,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/1) ... [2021-08-13 18:03:33,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 18:03:33,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 18:03:33,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 18:03:33,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 18:03:33,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (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 [2021-08-13 18:03:33,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 18:03:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 18:03:33,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 18:03:33,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 18:03:33,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 18:03:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 18:03:33,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 18:03:33,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 18:03:33,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 18:03:33,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 18:03:33,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 18:03:33,298 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 18:03:33,299 INFO L202 PluginConnector]: Adding new model security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:03:33 BoogieIcfgContainer [2021-08-13 18:03:33,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 18:03:33,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 18:03:33,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 18:03:33,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 18:03:33,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 06:03:33" (1/2) ... [2021-08-13 18:03:33,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743d526f and model type security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:03:33, skipping insertion in model container [2021-08-13 18:03:33,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "security.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:03:33" (2/2) ... [2021-08-13 18:03:33,304 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.bpl [2021-08-13 18:03:33,307 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 18:03:33,307 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 18:03:33,308 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 18:03:33,348 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-13 18:03:33,362 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 18:03:33,393 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 18:03:33,393 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 18:03:33,393 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 18:03:33,393 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 18:03:33,393 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 18:03:33,393 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 18:03:33,393 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 18:03:33,393 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 18:03:33,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 72 flow [2021-08-13 18:03:33,442 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2021-08-13 18:03:33,443 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 18:03:33,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2021-08-13 18:03:33,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 72 flow [2021-08-13 18:03:33,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 24 transitions, 60 flow [2021-08-13 18:03:33,471 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-08-13 18:03:33,471 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 18:03:33,472 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:33,472 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:33,472 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash 105025108, now seen corresponding path program 1 times [2021-08-13 18:03:33,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:33,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619754594] [2021-08-13 18:03:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:33,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 18:03:33,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:33,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:33,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619754594] [2021-08-13 18:03:33,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619754594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:33,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:33,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:03:33,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300571376] [2021-08-13 18:03:33,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:03:33,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:33,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:03:33,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:03:33,636 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-08-13 18:03:33,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:33,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-08-13 18:03:33,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:33,676 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2021-08-13 18:03:33,676 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 18:03:33,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 3/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2021-08-13 18:03:33,678 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 3 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2021-08-13 18:03:33,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 72 flow [2021-08-13 18:03:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:03:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:03:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2021-08-13 18:03:33,688 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-13 18:03:33,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:33,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,698 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-08-13 18:03:33,698 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 72 flow [2021-08-13 18:03:33,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,698 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:33,698 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:33,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 18:03:33,699 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash -200844120, now seen corresponding path program 1 times [2021-08-13 18:03:33,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:33,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799434356] [2021-08-13 18:03:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:33,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 18:03:33,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:33,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:33,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799434356] [2021-08-13 18:03:33,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799434356] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:33,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:33,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 18:03:33,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460249105] [2021-08-13 18:03:33,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 18:03:33,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 18:03:33,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 18:03:33,729 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-08-13 18:03:33,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:33,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-08-13 18:03:33,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:33,740 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2021-08-13 18:03:33,740 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-08-13 18:03:33,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 2/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 5 conditions per place. [2021-08-13 18:03:33,741 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 3 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-08-13 18:03:33,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 84 flow [2021-08-13 18:03:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 18:03:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 18:03:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2021-08-13 18:03:33,742 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-08-13 18:03:33,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:33,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2021-08-13 18:03:33,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,744 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-08-13 18:03:33,745 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 84 flow [2021-08-13 18:03:33,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,745 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:33,745 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:33,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 18:03:33,745 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash 531216121, now seen corresponding path program 1 times [2021-08-13 18:03:33,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:33,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772521037] [2021-08-13 18:03:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:33,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:33,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:33,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:33,819 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:33,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:33,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:33,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:33,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772521037] [2021-08-13 18:03:33,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772521037] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:33,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:33,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:33,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808897492] [2021-08-13 18:03:33,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:33,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:33,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:33,831 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:33,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:33,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:33,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:33,933 INFO L129 PetriNetUnfolder]: 24/112 cut-off events. [2021-08-13 18:03:33,933 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-08-13 18:03:33,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 112 events. 24/112 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 503 event pairs, 8 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 177. Up to 32 conditions per place. [2021-08-13 18:03:33,934 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 12 selfloop transitions, 5 changer transitions 1/37 dead transitions. [2021-08-13 18:03:33,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 142 flow [2021-08-13 18:03:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2021-08-13 18:03:33,935 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2021-08-13 18:03:33,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2021-08-13 18:03:33,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2021-08-13 18:03:33,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:33,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2021-08-13 18:03:33,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 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) [2021-08-13 18:03:33,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,938 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-08-13 18:03:33,938 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 142 flow [2021-08-13 18:03:33,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,938 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:33,938 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:33,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 18:03:33,939 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash 350895681, now seen corresponding path program 2 times [2021-08-13 18:03:33,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:33,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517633048] [2021-08-13 18:03:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:33,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:33,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:33,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:33,979 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:33,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:33,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:33,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:33,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:33,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517633048] [2021-08-13 18:03:33,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517633048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:33,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:33,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:33,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365643123] [2021-08-13 18:03:33,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:33,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:33,988 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:33,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:33,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:33,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:33,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,052 INFO L129 PetriNetUnfolder]: 26/119 cut-off events. [2021-08-13 18:03:34,052 INFO L130 PetriNetUnfolder]: For 43/51 co-relation queries the response was YES. [2021-08-13 18:03:34,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 119 events. 26/119 cut-off events. For 43/51 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 543 event pairs, 4 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 242. Up to 34 conditions per place. [2021-08-13 18:03:34,053 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 24 selfloop transitions, 12 changer transitions 2/57 dead transitions. [2021-08-13 18:03:34,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 298 flow [2021-08-13 18:03:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2021-08-13 18:03:34,055 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2021-08-13 18:03:34,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 139 transitions. [2021-08-13 18:03:34,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 139 transitions. [2021-08-13 18:03:34,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 139 transitions. [2021-08-13 18:03:34,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 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) [2021-08-13 18:03:34,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,056 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,057 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-08-13 18:03:34,057 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 57 transitions, 298 flow [2021-08-13 18:03:34,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,057 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,057 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 18:03:34,057 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,057 INFO L82 PathProgramCache]: Analyzing trace with hash 867403959, now seen corresponding path program 3 times [2021-08-13 18:03:34,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238329828] [2021-08-13 18:03:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,092 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:34,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:34,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:34,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238329828] [2021-08-13 18:03:34,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238329828] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:34,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:34,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:34,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400632849] [2021-08-13 18:03:34,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:34,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:34,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:34,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:34,101 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:34,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 57 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:34,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:34,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,176 INFO L129 PetriNetUnfolder]: 29/140 cut-off events. [2021-08-13 18:03:34,176 INFO L130 PetriNetUnfolder]: For 122/146 co-relation queries the response was YES. [2021-08-13 18:03:34,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 140 events. 29/140 cut-off events. For 122/146 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 700 event pairs, 4 based on Foata normal form. 5/132 useless extension candidates. Maximal degree in co-relation 342. Up to 36 conditions per place. [2021-08-13 18:03:34,178 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 28 selfloop transitions, 16 changer transitions 3/66 dead transitions. [2021-08-13 18:03:34,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 446 flow [2021-08-13 18:03:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2021-08-13 18:03:34,179 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-08-13 18:03:34,179 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2021-08-13 18:03:34,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2021-08-13 18:03:34,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2021-08-13 18:03:34,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,181 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,181 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-08-13 18:03:34,181 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 66 transitions, 446 flow [2021-08-13 18:03:34,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 18:03:34,181 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1863657043, now seen corresponding path program 4 times [2021-08-13 18:03:34,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643023935] [2021-08-13 18:03:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,233 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:34,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:34,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:34,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643023935] [2021-08-13 18:03:34,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643023935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:34,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:34,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:34,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891865043] [2021-08-13 18:03:34,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:34,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:34,246 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:34,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 66 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:34,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:34,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,318 INFO L129 PetriNetUnfolder]: 29/135 cut-off events. [2021-08-13 18:03:34,318 INFO L130 PetriNetUnfolder]: For 186/204 co-relation queries the response was YES. [2021-08-13 18:03:34,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 135 events. 29/135 cut-off events. For 186/204 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 664 event pairs, 4 based on Foata normal form. 5/129 useless extension candidates. Maximal degree in co-relation 397. Up to 36 conditions per place. [2021-08-13 18:03:34,321 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 27 selfloop transitions, 15 changer transitions 4/65 dead transitions. [2021-08-13 18:03:34,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 530 flow [2021-08-13 18:03:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-08-13 18:03:34,322 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 18:03:34,322 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-08-13 18:03:34,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-08-13 18:03:34,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-08-13 18:03:34,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 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) [2021-08-13 18:03:34,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,324 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,325 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-08-13 18:03:34,325 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 65 transitions, 530 flow [2021-08-13 18:03:34,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,325 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,325 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 18:03:34,325 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1546597894, now seen corresponding path program 1 times [2021-08-13 18:03:34,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996716952] [2021-08-13 18:03:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,393 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:34,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:34,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:34,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996716952] [2021-08-13 18:03:34,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996716952] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:34,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:34,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:34,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060895967] [2021-08-13 18:03:34,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:34,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:34,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:34,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:34,409 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:34,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 65 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:34,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:34,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,525 INFO L129 PetriNetUnfolder]: 44/217 cut-off events. [2021-08-13 18:03:34,525 INFO L130 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2021-08-13 18:03:34,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 217 events. 44/217 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1298 event pairs, 4 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 724. Up to 65 conditions per place. [2021-08-13 18:03:34,527 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 49 selfloop transitions, 21 changer transitions 8/96 dead transitions. [2021-08-13 18:03:34,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 996 flow [2021-08-13 18:03:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2021-08-13 18:03:34,528 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2021-08-13 18:03:34,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2021-08-13 18:03:34,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2021-08-13 18:03:34,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2021-08-13 18:03:34,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,531 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2021-08-13 18:03:34,531 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 96 transitions, 996 flow [2021-08-13 18:03:34,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,531 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,531 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 18:03:34,531 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1777947190, now seen corresponding path program 2 times [2021-08-13 18:03:34,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772075815] [2021-08-13 18:03:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,602 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:34,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:34,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:34,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772075815] [2021-08-13 18:03:34,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772075815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:34,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:34,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:34,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091623674] [2021-08-13 18:03:34,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:34,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:34,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:34,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:34,613 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:34,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 96 transitions, 996 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:34,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:34,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,764 INFO L129 PetriNetUnfolder]: 44/233 cut-off events. [2021-08-13 18:03:34,765 INFO L130 PetriNetUnfolder]: For 727/729 co-relation queries the response was YES. [2021-08-13 18:03:34,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 233 events. 44/233 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1476 event pairs, 4 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 873. Up to 70 conditions per place. [2021-08-13 18:03:34,766 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 43 selfloop transitions, 27 changer transitions 15/103 dead transitions. [2021-08-13 18:03:34,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 1234 flow [2021-08-13 18:03:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:03:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:03:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2021-08-13 18:03:34,767 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7817460317460317 [2021-08-13 18:03:34,767 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 197 transitions. [2021-08-13 18:03:34,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 197 transitions. [2021-08-13 18:03:34,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 197 transitions. [2021-08-13 18:03:34,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.88888888888889) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,769 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2021-08-13 18:03:34,769 INFO L482 AbstractCegarLoop]: Abstraction has has 65 places, 103 transitions, 1234 flow [2021-08-13 18:03:34,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,769 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,769 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 18:03:34,769 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1016582296, now seen corresponding path program 3 times [2021-08-13 18:03:34,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493233968] [2021-08-13 18:03:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,813 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:34,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:34,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:34,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493233968] [2021-08-13 18:03:34,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493233968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:34,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:34,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:34,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413812260] [2021-08-13 18:03:34,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:34,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:34,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:34,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:34,826 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:34,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 103 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:34,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:34,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:34,925 INFO L129 PetriNetUnfolder]: 44/237 cut-off events. [2021-08-13 18:03:34,926 INFO L130 PetriNetUnfolder]: For 1086/1092 co-relation queries the response was YES. [2021-08-13 18:03:34,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 237 events. 44/237 cut-off events. For 1086/1092 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1522 event pairs, 0 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 997. Up to 71 conditions per place. [2021-08-13 18:03:34,928 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 57 selfloop transitions, 28 changer transitions 16/119 dead transitions. [2021-08-13 18:03:34,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 119 transitions, 1660 flow [2021-08-13 18:03:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2021-08-13 18:03:34,931 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 18:03:34,931 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 154 transitions. [2021-08-13 18:03:34,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 154 transitions. [2021-08-13 18:03:34,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:34,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 154 transitions. [2021-08-13 18:03:34,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,932 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,933 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 44 predicate places. [2021-08-13 18:03:34,933 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 119 transitions, 1660 flow [2021-08-13 18:03:34,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:34,933 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:34,933 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:34,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 18:03:34,933 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:34,933 INFO L82 PathProgramCache]: Analyzing trace with hash 579936892, now seen corresponding path program 4 times [2021-08-13 18:03:34,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:34,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888694744] [2021-08-13 18:03:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:34,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:34,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:34,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:34,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:34,992 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:34,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888694744] [2021-08-13 18:03:35,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888694744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591156468] [2021-08-13 18:03:35,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,003 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 119 transitions, 1660 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,102 INFO L129 PetriNetUnfolder]: 43/240 cut-off events. [2021-08-13 18:03:35,102 INFO L130 PetriNetUnfolder]: For 1424/1428 co-relation queries the response was YES. [2021-08-13 18:03:35,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 240 events. 43/240 cut-off events. For 1424/1428 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1559 event pairs, 0 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 1114. Up to 71 conditions per place. [2021-08-13 18:03:35,104 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 58 selfloop transitions, 24 changer transitions 20/120 dead transitions. [2021-08-13 18:03:35,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1880 flow [2021-08-13 18:03:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2021-08-13 18:03:35,105 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2021-08-13 18:03:35,105 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2021-08-13 18:03:35,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2021-08-13 18:03:35,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2021-08-13 18:03:35,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,106 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,106 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 50 predicate places. [2021-08-13 18:03:35,106 INFO L482 AbstractCegarLoop]: Abstraction has has 77 places, 120 transitions, 1880 flow [2021-08-13 18:03:35,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,106 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,106 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 18:03:35,107 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1176319769, now seen corresponding path program 5 times [2021-08-13 18:03:35,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392354806] [2021-08-13 18:03:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,140 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392354806] [2021-08-13 18:03:35,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392354806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:35,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864958610] [2021-08-13 18:03:35,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:35,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:35,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:35,148 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:35,148 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 120 transitions, 1880 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:35,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,216 INFO L129 PetriNetUnfolder]: 42/242 cut-off events. [2021-08-13 18:03:35,217 INFO L130 PetriNetUnfolder]: For 1831/1833 co-relation queries the response was YES. [2021-08-13 18:03:35,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 242 events. 42/242 cut-off events. For 1831/1833 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1594 event pairs, 0 based on Foata normal form. 1/223 useless extension candidates. Maximal degree in co-relation 1218. Up to 71 conditions per place. [2021-08-13 18:03:35,218 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 59 selfloop transitions, 20 changer transitions 21/120 dead transitions. [2021-08-13 18:03:35,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 2078 flow [2021-08-13 18:03:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2021-08-13 18:03:35,219 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2021-08-13 18:03:35,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 141 transitions. [2021-08-13 18:03:35,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 141 transitions. [2021-08-13 18:03:35,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 141 transitions. [2021-08-13 18:03:35,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,220 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,220 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 55 predicate places. [2021-08-13 18:03:35,220 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 120 transitions, 2078 flow [2021-08-13 18:03:35,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,221 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,221 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 18:03:35,221 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash -715816598, now seen corresponding path program 5 times [2021-08-13 18:03:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215931155] [2021-08-13 18:03:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,263 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215931155] [2021-08-13 18:03:35,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215931155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419628896] [2021-08-13 18:03:35,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,273 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 120 transitions, 2078 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,368 INFO L129 PetriNetUnfolder]: 41/243 cut-off events. [2021-08-13 18:03:35,368 INFO L130 PetriNetUnfolder]: For 2223/2227 co-relation queries the response was YES. [2021-08-13 18:03:35,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 243 events. 41/243 cut-off events. For 2223/2227 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1626 event pairs, 0 based on Foata normal form. 3/226 useless extension candidates. Maximal degree in co-relation 1338. Up to 71 conditions per place. [2021-08-13 18:03:35,370 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 53 selfloop transitions, 21 changer transitions 28/120 dead transitions. [2021-08-13 18:03:35,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 120 transitions, 2282 flow [2021-08-13 18:03:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 18:03:35,371 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 18:03:35,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,372 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 61 predicate places. [2021-08-13 18:03:35,372 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 120 transitions, 2282 flow [2021-08-13 18:03:35,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,373 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,373 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 18:03:35,373 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash 2122394443, now seen corresponding path program 6 times [2021-08-13 18:03:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423151084] [2021-08-13 18:03:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423151084] [2021-08-13 18:03:35,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423151084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 18:03:35,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797838561] [2021-08-13 18:03:35,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 18:03:35,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 18:03:35,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 18:03:35,409 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 28 [2021-08-13 18:03:35,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 120 transitions, 2282 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 28 [2021-08-13 18:03:35,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,477 INFO L129 PetriNetUnfolder]: 41/241 cut-off events. [2021-08-13 18:03:35,478 INFO L130 PetriNetUnfolder]: For 2662/2664 co-relation queries the response was YES. [2021-08-13 18:03:35,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1556 conditions, 241 events. 41/241 cut-off events. For 2662/2664 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1621 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 1442. Up to 71 conditions per place. [2021-08-13 18:03:35,479 INFO L132 encePairwiseOnDemand]: 21/28 looper letters, 54 selfloop transitions, 15 changer transitions 30/119 dead transitions. [2021-08-13 18:03:35,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 2456 flow [2021-08-13 18:03:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 18:03:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 18:03:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2021-08-13 18:03:35,480 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 18:03:35,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 140 transitions. [2021-08-13 18:03:35,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 140 transitions. [2021-08-13 18:03:35,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 140 transitions. [2021-08-13 18:03:35,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 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) [2021-08-13 18:03:35,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,481 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 66 predicate places. [2021-08-13 18:03:35,481 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 2456 flow [2021-08-13 18:03:35,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,481 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,481 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 18:03:35,481 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1051096864, now seen corresponding path program 6 times [2021-08-13 18:03:35,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515916884] [2021-08-13 18:03:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,515 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515916884] [2021-08-13 18:03:35,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515916884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437973908] [2021-08-13 18:03:35,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,526 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 2456 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,616 INFO L129 PetriNetUnfolder]: 40/260 cut-off events. [2021-08-13 18:03:35,617 INFO L130 PetriNetUnfolder]: For 3179/3183 co-relation queries the response was YES. [2021-08-13 18:03:35,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 260 events. 40/260 cut-off events. For 3179/3183 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1844 event pairs, 0 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 1652. Up to 81 conditions per place. [2021-08-13 18:03:35,618 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 47 selfloop transitions, 26 changer transitions 35/126 dead transitions. [2021-08-13 18:03:35,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 126 transitions, 2840 flow [2021-08-13 18:03:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 18:03:35,619 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 18:03:35,619 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 18:03:35,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,620 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,620 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2021-08-13 18:03:35,620 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 126 transitions, 2840 flow [2021-08-13 18:03:35,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,621 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,621 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 18:03:35,621 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1953488612, now seen corresponding path program 7 times [2021-08-13 18:03:35,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779205221] [2021-08-13 18:03:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,654 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779205221] [2021-08-13 18:03:35,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779205221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915600454] [2021-08-13 18:03:35,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,664 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 126 transitions, 2840 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,760 INFO L129 PetriNetUnfolder]: 40/258 cut-off events. [2021-08-13 18:03:35,760 INFO L130 PetriNetUnfolder]: For 3657/3661 co-relation queries the response was YES. [2021-08-13 18:03:35,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 258 events. 40/258 cut-off events. For 3657/3661 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1821 event pairs, 0 based on Foata normal form. 3/241 useless extension candidates. Maximal degree in co-relation 1768. Up to 81 conditions per place. [2021-08-13 18:03:35,762 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 48 selfloop transitions, 22 changer transitions 37/125 dead transitions. [2021-08-13 18:03:35,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 125 transitions, 3028 flow [2021-08-13 18:03:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 18:03:35,763 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 18:03:35,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 18:03:35,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 18:03:35,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 18:03:35,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,764 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2021-08-13 18:03:35,764 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 3028 flow [2021-08-13 18:03:35,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,765 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,765 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 18:03:35,765 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,765 INFO L82 PathProgramCache]: Analyzing trace with hash 942345654, now seen corresponding path program 8 times [2021-08-13 18:03:35,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239174495] [2021-08-13 18:03:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,809 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239174495] [2021-08-13 18:03:35,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239174495] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075675635] [2021-08-13 18:03:35,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,840 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 3028 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:35,934 INFO L129 PetriNetUnfolder]: 39/263 cut-off events. [2021-08-13 18:03:35,934 INFO L130 PetriNetUnfolder]: For 4251/4255 co-relation queries the response was YES. [2021-08-13 18:03:35,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 263 events. 39/263 cut-off events. For 4251/4255 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1890 event pairs, 0 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 1903. Up to 82 conditions per place. [2021-08-13 18:03:35,936 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 36 selfloop transitions, 28 changer transitions 44/126 dead transitions. [2021-08-13 18:03:35,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 126 transitions, 3272 flow [2021-08-13 18:03:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2021-08-13 18:03:35,937 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8112244897959183 [2021-08-13 18:03:35,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 159 transitions. [2021-08-13 18:03:35,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 159 transitions. [2021-08-13 18:03:35,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:35,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 159 transitions. [2021-08-13 18:03:35,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,938 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 84 predicate places. [2021-08-13 18:03:35,938 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 126 transitions, 3272 flow [2021-08-13 18:03:35,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,938 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:35,938 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:35,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 18:03:35,938 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:35,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:35,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1289656718, now seen corresponding path program 9 times [2021-08-13 18:03:35,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:35,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138685006] [2021-08-13 18:03:35,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:35,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:35,967 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:35,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:35,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:35,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:35,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:35,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138685006] [2021-08-13 18:03:35,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138685006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:35,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:35,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:35,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832071281] [2021-08-13 18:03:35,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:35,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:35,976 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:35,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 126 transitions, 3272 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:35,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:35,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:35,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,116 INFO L129 PetriNetUnfolder]: 37/265 cut-off events. [2021-08-13 18:03:36,116 INFO L130 PetriNetUnfolder]: For 4454/4462 co-relation queries the response was YES. [2021-08-13 18:03:36,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 265 events. 37/265 cut-off events. For 4454/4462 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1952 event pairs, 0 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 2031. Up to 83 conditions per place. [2021-08-13 18:03:36,118 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 31 selfloop transitions, 31 changer transitions 47/127 dead transitions. [2021-08-13 18:03:36,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 127 transitions, 3520 flow [2021-08-13 18:03:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2021-08-13 18:03:36,119 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2021-08-13 18:03:36,119 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 222 transitions. [2021-08-13 18:03:36,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 222 transitions. [2021-08-13 18:03:36,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 222 transitions. [2021-08-13 18:03:36,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,121 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,121 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 93 predicate places. [2021-08-13 18:03:36,121 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 127 transitions, 3520 flow [2021-08-13 18:03:36,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,121 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,121 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 18:03:36,121 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash 244156918, now seen corresponding path program 10 times [2021-08-13 18:03:36,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778656266] [2021-08-13 18:03:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,154 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:36,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:36,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:36,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778656266] [2021-08-13 18:03:36,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778656266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:36,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:36,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:36,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757534649] [2021-08-13 18:03:36,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:36,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:36,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:36,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:36,162 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:36,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 127 transitions, 3520 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:36,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:36,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,308 INFO L129 PetriNetUnfolder]: 37/263 cut-off events. [2021-08-13 18:03:36,308 INFO L130 PetriNetUnfolder]: For 4962/4974 co-relation queries the response was YES. [2021-08-13 18:03:36,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 263 events. 37/263 cut-off events. For 4962/4974 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1933 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 2149. Up to 82 conditions per place. [2021-08-13 18:03:36,310 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 27 selfloop transitions, 33 changer transitions 48/126 dead transitions. [2021-08-13 18:03:36,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 3704 flow [2021-08-13 18:03:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2021-08-13 18:03:36,311 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7892857142857143 [2021-08-13 18:03:36,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 221 transitions. [2021-08-13 18:03:36,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 221 transitions. [2021-08-13 18:03:36,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 221 transitions. [2021-08-13 18:03:36,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,313 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,313 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 102 predicate places. [2021-08-13 18:03:36,313 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 126 transitions, 3704 flow [2021-08-13 18:03:36,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,313 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,313 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 18:03:36,313 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash -108459350, now seen corresponding path program 1 times [2021-08-13 18:03:36,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207870795] [2021-08-13 18:03:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,350 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:36,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:36,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:36,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207870795] [2021-08-13 18:03:36,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207870795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:36,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:36,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:36,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118887070] [2021-08-13 18:03:36,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:36,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:36,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:36,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:36,360 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:36,360 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 126 transitions, 3704 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,360 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:36,360 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:36,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,473 INFO L129 PetriNetUnfolder]: 42/292 cut-off events. [2021-08-13 18:03:36,473 INFO L130 PetriNetUnfolder]: For 7433/7446 co-relation queries the response was YES. [2021-08-13 18:03:36,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 292 events. 42/292 cut-off events. For 7433/7446 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2195 event pairs, 0 based on Foata normal form. 2/272 useless extension candidates. Maximal degree in co-relation 2428. Up to 89 conditions per place. [2021-08-13 18:03:36,475 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 54 selfloop transitions, 21 changer transitions 49/143 dead transitions. [2021-08-13 18:03:36,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 143 transitions, 4528 flow [2021-08-13 18:03:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2021-08-13 18:03:36,476 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 18:03:36,476 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 154 transitions. [2021-08-13 18:03:36,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 154 transitions. [2021-08-13 18:03:36,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 154 transitions. [2021-08-13 18:03:36,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,477 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 108 predicate places. [2021-08-13 18:03:36,477 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 4528 flow [2021-08-13 18:03:36,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,477 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,477 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 18:03:36,477 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash -905153398, now seen corresponding path program 2 times [2021-08-13 18:03:36,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479351323] [2021-08-13 18:03:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,505 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:36,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:36,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:36,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479351323] [2021-08-13 18:03:36,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479351323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:36,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:36,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:36,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705839462] [2021-08-13 18:03:36,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:36,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:36,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:36,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:36,513 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:36,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 4528 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:36,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:36,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,617 INFO L129 PetriNetUnfolder]: 43/308 cut-off events. [2021-08-13 18:03:36,617 INFO L130 PetriNetUnfolder]: For 8656/8688 co-relation queries the response was YES. [2021-08-13 18:03:36,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2825 conditions, 308 events. 43/308 cut-off events. For 8656/8688 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2352 event pairs, 0 based on Foata normal form. 9/295 useless extension candidates. Maximal degree in co-relation 2676. Up to 96 conditions per place. [2021-08-13 18:03:36,619 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 57 selfloop transitions, 24 changer transitions 50/150 dead transitions. [2021-08-13 18:03:36,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 150 transitions, 5040 flow [2021-08-13 18:03:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2021-08-13 18:03:36,621 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7959183673469388 [2021-08-13 18:03:36,621 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 156 transitions. [2021-08-13 18:03:36,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 156 transitions. [2021-08-13 18:03:36,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 156 transitions. [2021-08-13 18:03:36,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,625 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 114 predicate places. [2021-08-13 18:03:36,625 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 150 transitions, 5040 flow [2021-08-13 18:03:36,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,625 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,625 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 18:03:36,625 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2063755170, now seen corresponding path program 3 times [2021-08-13 18:03:36,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220505407] [2021-08-13 18:03:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,665 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:36,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:36,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:36,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220505407] [2021-08-13 18:03:36,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220505407] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:36,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:36,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:36,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153686256] [2021-08-13 18:03:36,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:36,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:36,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:36,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:36,673 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:36,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 150 transitions, 5040 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:36,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:36,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,801 INFO L129 PetriNetUnfolder]: 43/318 cut-off events. [2021-08-13 18:03:36,801 INFO L130 PetriNetUnfolder]: For 9408/9425 co-relation queries the response was YES. [2021-08-13 18:03:36,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 318 events. 43/318 cut-off events. For 9408/9425 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2484 event pairs, 0 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 2910. Up to 99 conditions per place. [2021-08-13 18:03:36,803 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 56 selfloop transitions, 25 changer transitions 57/157 dead transitions. [2021-08-13 18:03:36,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 157 transitions, 5516 flow [2021-08-13 18:03:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 18:03:36,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 18:03:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2021-08-13 18:03:36,804 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7817460317460317 [2021-08-13 18:03:36,804 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 197 transitions. [2021-08-13 18:03:36,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 197 transitions. [2021-08-13 18:03:36,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 197 transitions. [2021-08-13 18:03:36,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.88888888888889) internal successors, (197), 9 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,805 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,805 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 122 predicate places. [2021-08-13 18:03:36,805 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 5516 flow [2021-08-13 18:03:36,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,806 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,806 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 18:03:36,806 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -547968762, now seen corresponding path program 4 times [2021-08-13 18:03:36,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993772775] [2021-08-13 18:03:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,834 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:36,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:36,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:36,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993772775] [2021-08-13 18:03:36,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993772775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:36,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:36,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:36,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223940650] [2021-08-13 18:03:36,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:36,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:36,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:36,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:36,842 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:36,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 5516 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:36,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:36,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:36,966 INFO L129 PetriNetUnfolder]: 43/319 cut-off events. [2021-08-13 18:03:36,966 INFO L130 PetriNetUnfolder]: For 10586/10622 co-relation queries the response was YES. [2021-08-13 18:03:36,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 319 events. 43/319 cut-off events. For 10586/10622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2505 event pairs, 0 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 3051. Up to 98 conditions per place. [2021-08-13 18:03:36,968 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 51 selfloop transitions, 23 changer transitions 63/156 dead transitions. [2021-08-13 18:03:36,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 5748 flow [2021-08-13 18:03:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 18:03:36,969 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 18:03:36,969 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 18:03:36,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 18:03:36,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:36,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 18:03:36,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,970 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2021-08-13 18:03:36,970 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 156 transitions, 5748 flow [2021-08-13 18:03:36,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:36,970 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:36,970 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:36,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 18:03:36,970 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1667908086, now seen corresponding path program 5 times [2021-08-13 18:03:36,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:36,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011437006] [2021-08-13 18:03:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:36,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:36,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:36,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:36,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:36,999 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:36,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:37,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:37,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:37,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011437006] [2021-08-13 18:03:37,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011437006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:37,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:37,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:37,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695083645] [2021-08-13 18:03:37,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:37,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:37,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:37,007 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:37,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 156 transitions, 5748 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:37,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:37,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:37,122 INFO L129 PetriNetUnfolder]: 52/384 cut-off events. [2021-08-13 18:03:37,123 INFO L130 PetriNetUnfolder]: For 13461/13493 co-relation queries the response was YES. [2021-08-13 18:03:37,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4025 conditions, 384 events. 52/384 cut-off events. For 13461/13493 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3193 event pairs, 0 based on Foata normal form. 5/363 useless extension candidates. Maximal degree in co-relation 3846. Up to 119 conditions per place. [2021-08-13 18:03:37,125 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 27 changer transitions 72/185 dead transitions. [2021-08-13 18:03:37,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 185 transitions, 7296 flow [2021-08-13 18:03:37,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2021-08-13 18:03:37,126 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2021-08-13 18:03:37,126 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:37,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,127 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 134 predicate places. [2021-08-13 18:03:37,127 INFO L482 AbstractCegarLoop]: Abstraction has has 161 places, 185 transitions, 7296 flow [2021-08-13 18:03:37,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,127 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:37,127 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:37,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 18:03:37,127 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1105494758, now seen corresponding path program 6 times [2021-08-13 18:03:37,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:37,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538937060] [2021-08-13 18:03:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:37,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:37,157 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:37,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:37,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:37,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:37,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538937060] [2021-08-13 18:03:37,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538937060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:37,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:37,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:37,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095562232] [2021-08-13 18:03:37,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:37,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:37,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:37,166 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:37,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 185 transitions, 7296 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:37,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:37,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:37,283 INFO L129 PetriNetUnfolder]: 50/393 cut-off events. [2021-08-13 18:03:37,283 INFO L130 PetriNetUnfolder]: For 14524/14546 co-relation queries the response was YES. [2021-08-13 18:03:37,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 393 events. 50/393 cut-off events. For 14524/14546 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3311 event pairs, 0 based on Foata normal form. 6/373 useless extension candidates. Maximal degree in co-relation 4064. Up to 120 conditions per place. [2021-08-13 18:03:37,286 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 24 changer transitions 77/187 dead transitions. [2021-08-13 18:03:37,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 187 transitions, 7718 flow [2021-08-13 18:03:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:37,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2021-08-13 18:03:37,286 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2021-08-13 18:03:37,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:37,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2021-08-13 18:03:37,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,287 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 140 predicate places. [2021-08-13 18:03:37,287 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 187 transitions, 7718 flow [2021-08-13 18:03:37,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,287 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:37,288 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:37,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 18:03:37,288 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:37,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:37,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1026750154, now seen corresponding path program 7 times [2021-08-13 18:03:37,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:37,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546369635] [2021-08-13 18:03:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:37,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:37,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:37,317 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:37,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:37,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:37,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:37,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546369635] [2021-08-13 18:03:37,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546369635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:37,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:37,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452483019] [2021-08-13 18:03:37,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:37,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:37,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:37,325 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:37,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 187 transitions, 7718 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:37,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:37,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:37,474 INFO L129 PetriNetUnfolder]: 49/390 cut-off events. [2021-08-13 18:03:37,474 INFO L130 PetriNetUnfolder]: For 14486/14508 co-relation queries the response was YES. [2021-08-13 18:03:37,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 390 events. 49/390 cut-off events. For 14486/14508 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3292 event pairs, 0 based on Foata normal form. 6/372 useless extension candidates. Maximal degree in co-relation 4246. Up to 120 conditions per place. [2021-08-13 18:03:37,477 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 67 selfloop transitions, 18 changer transitions 83/187 dead transitions. [2021-08-13 18:03:37,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 187 transitions, 8052 flow [2021-08-13 18:03:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2021-08-13 18:03:37,478 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7908163265306123 [2021-08-13 18:03:37,478 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2021-08-13 18:03:37,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2021-08-13 18:03:37,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:37,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2021-08-13 18:03:37,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,479 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,479 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 146 predicate places. [2021-08-13 18:03:37,479 INFO L482 AbstractCegarLoop]: Abstraction has has 173 places, 187 transitions, 8052 flow [2021-08-13 18:03:37,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,479 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:37,479 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:37,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 18:03:37,479 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -133322965, now seen corresponding path program 1 times [2021-08-13 18:03:37,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:37,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785523438] [2021-08-13 18:03:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:37,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:37,516 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:37,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:37,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:37,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:37,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785523438] [2021-08-13 18:03:37,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785523438] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:37,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:37,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:37,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634678148] [2021-08-13 18:03:37,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:37,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:37,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:37,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:37,526 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:37,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 187 transitions, 8052 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:37,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:37,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:37,723 INFO L129 PetriNetUnfolder]: 76/691 cut-off events. [2021-08-13 18:03:37,723 INFO L130 PetriNetUnfolder]: For 25947/26008 co-relation queries the response was YES. [2021-08-13 18:03:37,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 691 events. 76/691 cut-off events. For 25947/26008 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7035 event pairs, 0 based on Foata normal form. 11/662 useless extension candidates. Maximal degree in co-relation 7740. Up to 220 conditions per place. [2021-08-13 18:03:37,727 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 125 selfloop transitions, 28 changer transitions 145/315 dead transitions. [2021-08-13 18:03:37,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 315 transitions, 14766 flow [2021-08-13 18:03:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2021-08-13 18:03:37,728 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2021-08-13 18:03:37,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 178 transitions. [2021-08-13 18:03:37,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 178 transitions. [2021-08-13 18:03:37,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:37,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 178 transitions. [2021-08-13 18:03:37,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,729 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,729 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 153 predicate places. [2021-08-13 18:03:37,729 INFO L482 AbstractCegarLoop]: Abstraction has has 180 places, 315 transitions, 14766 flow [2021-08-13 18:03:37,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,729 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:37,729 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:37,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 18:03:37,729 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:37,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:37,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2024230005, now seen corresponding path program 2 times [2021-08-13 18:03:37,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:37,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621119458] [2021-08-13 18:03:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:37,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:37,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:37,764 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:37,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:37,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:37,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:37,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621119458] [2021-08-13 18:03:37,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621119458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:37,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:37,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:37,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638633865] [2021-08-13 18:03:37,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:37,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:37,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:37,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:37,773 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:37,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 315 transitions, 14766 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:37,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:37,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:37,984 INFO L129 PetriNetUnfolder]: 78/771 cut-off events. [2021-08-13 18:03:37,984 INFO L130 PetriNetUnfolder]: For 31373/31425 co-relation queries the response was YES. [2021-08-13 18:03:37,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 771 events. 78/771 cut-off events. For 31373/31425 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 8164 event pairs, 0 based on Foata normal form. 9/736 useless extension candidates. Maximal degree in co-relation 8846. Up to 240 conditions per place. [2021-08-13 18:03:37,989 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 143 selfloop transitions, 29 changer transitions 159/348 dead transitions. [2021-08-13 18:03:37,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 348 transitions, 17046 flow [2021-08-13 18:03:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2021-08-13 18:03:37,990 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7991071428571429 [2021-08-13 18:03:37,990 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 179 transitions. [2021-08-13 18:03:37,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 179 transitions. [2021-08-13 18:03:37,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:37,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 179 transitions. [2021-08-13 18:03:37,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,991 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,991 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 160 predicate places. [2021-08-13 18:03:37,991 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 348 transitions, 17046 flow [2021-08-13 18:03:37,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:37,991 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:37,991 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:37,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 18:03:37,992 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2024524177, now seen corresponding path program 3 times [2021-08-13 18:03:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:37,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637363242] [2021-08-13 18:03:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:37,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:37,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,027 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:38,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:38,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:38,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637363242] [2021-08-13 18:03:38,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637363242] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:38,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:38,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:38,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687104367] [2021-08-13 18:03:38,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:38,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:38,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:38,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:38,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:38,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 348 transitions, 17046 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:38,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:38,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:38,296 INFO L129 PetriNetUnfolder]: 78/784 cut-off events. [2021-08-13 18:03:38,296 INFO L130 PetriNetUnfolder]: For 35085/35210 co-relation queries the response was YES. [2021-08-13 18:03:38,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 784 events. 78/784 cut-off events. For 35085/35210 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8322 event pairs, 0 based on Foata normal form. 13/752 useless extension candidates. Maximal degree in co-relation 9317. Up to 245 conditions per place. [2021-08-13 18:03:38,300 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 113 selfloop transitions, 59 changer transitions 166/355 dead transitions. [2021-08-13 18:03:38,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 355 transitions, 18034 flow [2021-08-13 18:03:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:38,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2021-08-13 18:03:38,301 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-08-13 18:03:38,301 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 209 transitions. [2021-08-13 18:03:38,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 209 transitions. [2021-08-13 18:03:38,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:38,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 209 transitions. [2021-08-13 18:03:38,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,302 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,302 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 169 predicate places. [2021-08-13 18:03:38,302 INFO L482 AbstractCegarLoop]: Abstraction has has 196 places, 355 transitions, 18034 flow [2021-08-13 18:03:38,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,302 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:38,302 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:38,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 18:03:38,302 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1097798677, now seen corresponding path program 4 times [2021-08-13 18:03:38,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:38,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502550345] [2021-08-13 18:03:38,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:38,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,340 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:38,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:38,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:38,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:38,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502550345] [2021-08-13 18:03:38,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502550345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:38,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:38,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:38,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439074450] [2021-08-13 18:03:38,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:38,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:38,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:38,348 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:38,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 355 transitions, 18034 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:38,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:38,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:38,561 INFO L129 PetriNetUnfolder]: 77/787 cut-off events. [2021-08-13 18:03:38,561 INFO L130 PetriNetUnfolder]: For 37772/37882 co-relation queries the response was YES. [2021-08-13 18:03:38,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 787 events. 77/787 cut-off events. For 37772/37882 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8409 event pairs, 0 based on Foata normal form. 15/757 useless extension candidates. Maximal degree in co-relation 9677. Up to 246 conditions per place. [2021-08-13 18:03:38,565 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 132 selfloop transitions, 22 changer transitions 185/356 dead transitions. [2021-08-13 18:03:38,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 356 transitions, 18766 flow [2021-08-13 18:03:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2021-08-13 18:03:38,566 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2021-08-13 18:03:38,566 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 178 transitions. [2021-08-13 18:03:38,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 178 transitions. [2021-08-13 18:03:38,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:38,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 178 transitions. [2021-08-13 18:03:38,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,567 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,567 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 176 predicate places. [2021-08-13 18:03:38,567 INFO L482 AbstractCegarLoop]: Abstraction has has 203 places, 356 transitions, 18766 flow [2021-08-13 18:03:38,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,567 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:38,567 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:38,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 18:03:38,567 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash 51850037, now seen corresponding path program 5 times [2021-08-13 18:03:38,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:38,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280251098] [2021-08-13 18:03:38,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:38,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,603 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:38,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:38,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:38,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:38,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280251098] [2021-08-13 18:03:38,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280251098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:38,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:38,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:38,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166630131] [2021-08-13 18:03:38,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:38,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:38,612 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:38,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 356 transitions, 18766 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:38,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:38,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:38,848 INFO L129 PetriNetUnfolder]: 76/789 cut-off events. [2021-08-13 18:03:38,848 INFO L130 PetriNetUnfolder]: For 39960/40063 co-relation queries the response was YES. [2021-08-13 18:03:38,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10475 conditions, 789 events. 76/789 cut-off events. For 39960/40063 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8466 event pairs, 0 based on Foata normal form. 11/755 useless extension candidates. Maximal degree in co-relation 10042. Up to 246 conditions per place. [2021-08-13 18:03:38,851 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 122 selfloop transitions, 14 changer transitions 203/356 dead transitions. [2021-08-13 18:03:38,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 356 transitions, 19444 flow [2021-08-13 18:03:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2021-08-13 18:03:38,852 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 18:03:38,852 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 176 transitions. [2021-08-13 18:03:38,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 176 transitions. [2021-08-13 18:03:38,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:38,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 176 transitions. [2021-08-13 18:03:38,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,853 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,853 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 183 predicate places. [2021-08-13 18:03:38,853 INFO L482 AbstractCegarLoop]: Abstraction has has 210 places, 356 transitions, 19444 flow [2021-08-13 18:03:38,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,853 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:38,853 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:38,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 18:03:38,854 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:38,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1126555605, now seen corresponding path program 6 times [2021-08-13 18:03:38,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:38,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729473303] [2021-08-13 18:03:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:38,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:38,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:38,886 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:38,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:38,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:38,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:38,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:38,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729473303] [2021-08-13 18:03:38,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729473303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:38,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:38,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:38,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063541708] [2021-08-13 18:03:38,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:38,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:38,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:38,895 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:38,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 356 transitions, 19444 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:38,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:38,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:38,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:39,170 INFO L129 PetriNetUnfolder]: 72/809 cut-off events. [2021-08-13 18:03:39,170 INFO L130 PetriNetUnfolder]: For 43139/43250 co-relation queries the response was YES. [2021-08-13 18:03:39,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11019 conditions, 809 events. 72/809 cut-off events. For 43139/43250 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8813 event pairs, 0 based on Foata normal form. 9/773 useless extension candidates. Maximal degree in co-relation 10568. Up to 252 conditions per place. [2021-08-13 18:03:39,174 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 94 selfloop transitions, 40 changer transitions 211/362 dead transitions. [2021-08-13 18:03:39,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 362 transitions, 20482 flow [2021-08-13 18:03:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2021-08-13 18:03:39,175 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2021-08-13 18:03:39,175 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 259 transitions. [2021-08-13 18:03:39,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 259 transitions. [2021-08-13 18:03:39,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:39,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 259 transitions. [2021-08-13 18:03:39,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,176 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,176 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 194 predicate places. [2021-08-13 18:03:39,176 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 362 transitions, 20482 flow [2021-08-13 18:03:39,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,176 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:39,176 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:39,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 18:03:39,177 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1210613377, now seen corresponding path program 7 times [2021-08-13 18:03:39,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:39,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271548189] [2021-08-13 18:03:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:39,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:39,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:39,210 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:39,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:39,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:39,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:39,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271548189] [2021-08-13 18:03:39,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271548189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:39,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:39,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:39,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264663025] [2021-08-13 18:03:39,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:39,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:39,219 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:39,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 362 transitions, 20482 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:39,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:39,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:39,497 INFO L129 PetriNetUnfolder]: 70/817 cut-off events. [2021-08-13 18:03:39,497 INFO L130 PetriNetUnfolder]: For 46265/46392 co-relation queries the response was YES. [2021-08-13 18:03:39,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11438 conditions, 817 events. 70/817 cut-off events. For 46265/46392 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8947 event pairs, 0 based on Foata normal form. 11/783 useless extension candidates. Maximal degree in co-relation 10975. Up to 254 conditions per place. [2021-08-13 18:03:39,501 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 95 selfloop transitions, 31 changer transitions 221/364 dead transitions. [2021-08-13 18:03:39,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 364 transitions, 21296 flow [2021-08-13 18:03:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2021-08-13 18:03:39,502 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-08-13 18:03:39,502 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 256 transitions. [2021-08-13 18:03:39,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 256 transitions. [2021-08-13 18:03:39,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:39,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 256 transitions. [2021-08-13 18:03:39,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,503 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,504 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 205 predicate places. [2021-08-13 18:03:39,504 INFO L482 AbstractCegarLoop]: Abstraction has has 232 places, 364 transitions, 21296 flow [2021-08-13 18:03:39,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,504 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:39,504 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:39,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 18:03:39,504 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:39,504 INFO L82 PathProgramCache]: Analyzing trace with hash -2018730311, now seen corresponding path program 8 times [2021-08-13 18:03:39,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:39,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920867164] [2021-08-13 18:03:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:39,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:39,543 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:39,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:39,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:39,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:39,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920867164] [2021-08-13 18:03:39,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920867164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:39,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:39,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:39,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587069234] [2021-08-13 18:03:39,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:39,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:39,552 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:39,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 364 transitions, 21296 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:39,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:39,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:39,894 INFO L129 PetriNetUnfolder]: 68/824 cut-off events. [2021-08-13 18:03:39,894 INFO L130 PetriNetUnfolder]: For 48977/49116 co-relation queries the response was YES. [2021-08-13 18:03:39,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 824 events. 68/824 cut-off events. For 48977/49116 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9091 event pairs, 0 based on Foata normal form. 11/790 useless extension candidates. Maximal degree in co-relation 11389. Up to 255 conditions per place. [2021-08-13 18:03:39,904 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 86 selfloop transitions, 25 changer transitions 237/365 dead transitions. [2021-08-13 18:03:39,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 365 transitions, 22054 flow [2021-08-13 18:03:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 258 transitions. [2021-08-13 18:03:39,906 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2021-08-13 18:03:39,906 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 258 transitions. [2021-08-13 18:03:39,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 258 transitions. [2021-08-13 18:03:39,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:39,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 258 transitions. [2021-08-13 18:03:39,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.5) internal successors, (258), 12 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,908 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,908 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 216 predicate places. [2021-08-13 18:03:39,908 INFO L482 AbstractCegarLoop]: Abstraction has has 243 places, 365 transitions, 22054 flow [2021-08-13 18:03:39,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,908 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:39,909 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:39,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 18:03:39,910 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash -38207831, now seen corresponding path program 9 times [2021-08-13 18:03:39,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:39,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115451829] [2021-08-13 18:03:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:39,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:39,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:39,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:39,988 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:39,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:39,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:39,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:39,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:39,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115451829] [2021-08-13 18:03:39,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115451829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:39,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:39,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:39,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118417807] [2021-08-13 18:03:39,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:39,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:39,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:39,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:39,998 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:39,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 365 transitions, 22054 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:39,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:39,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:39,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:40,257 INFO L129 PetriNetUnfolder]: 64/904 cut-off events. [2021-08-13 18:03:40,257 INFO L130 PetriNetUnfolder]: For 54123/54270 co-relation queries the response was YES. [2021-08-13 18:03:40,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 904 events. 64/904 cut-off events. For 54123/54270 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10393 event pairs, 0 based on Foata normal form. 13/870 useless extension candidates. Maximal degree in co-relation 12772. Up to 284 conditions per place. [2021-08-13 18:03:40,261 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 81 selfloop transitions, 24 changer transitions 273/395 dead transitions. [2021-08-13 18:03:40,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 395 transitions, 24730 flow [2021-08-13 18:03:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2021-08-13 18:03:40,262 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2021-08-13 18:03:40,262 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2021-08-13 18:03:40,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2021-08-13 18:03:40,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:40,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2021-08-13 18:03:40,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,263 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,263 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 223 predicate places. [2021-08-13 18:03:40,263 INFO L482 AbstractCegarLoop]: Abstraction has has 250 places, 395 transitions, 24730 flow [2021-08-13 18:03:40,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,263 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:40,263 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:40,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 18:03:40,263 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash 593371893, now seen corresponding path program 10 times [2021-08-13 18:03:40,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:40,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467490641] [2021-08-13 18:03:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:40,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:40,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:40,296 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:40,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:40,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:40,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:40,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467490641] [2021-08-13 18:03:40,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467490641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:40,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:40,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:40,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56074577] [2021-08-13 18:03:40,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:40,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:40,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:40,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:40,310 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:40,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 395 transitions, 24730 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:40,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:40,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:40,654 INFO L129 PetriNetUnfolder]: 62/913 cut-off events. [2021-08-13 18:03:40,654 INFO L130 PetriNetUnfolder]: For 57112/57232 co-relation queries the response was YES. [2021-08-13 18:03:40,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13677 conditions, 913 events. 62/913 cut-off events. For 57112/57232 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10563 event pairs, 0 based on Foata normal form. 7/873 useless extension candidates. Maximal degree in co-relation 13189. Up to 285 conditions per place. [2021-08-13 18:03:40,657 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 67 selfloop transitions, 36 changer transitions 276/396 dead transitions. [2021-08-13 18:03:40,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 396 transitions, 25554 flow [2021-08-13 18:03:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:03:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:03:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2021-08-13 18:03:40,658 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7597402597402597 [2021-08-13 18:03:40,658 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 234 transitions. [2021-08-13 18:03:40,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 234 transitions. [2021-08-13 18:03:40,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:40,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 234 transitions. [2021-08-13 18:03:40,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,659 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,659 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 233 predicate places. [2021-08-13 18:03:40,660 INFO L482 AbstractCegarLoop]: Abstraction has has 260 places, 396 transitions, 25554 flow [2021-08-13 18:03:40,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,660 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:40,660 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:40,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 18:03:40,660 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash -298802813, now seen corresponding path program 11 times [2021-08-13 18:03:40,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:40,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690784021] [2021-08-13 18:03:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:40,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:40,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:40,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:40,691 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:40,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:40,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:40,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:40,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:40,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690784021] [2021-08-13 18:03:40,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690784021] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:40,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:40,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:40,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659308354] [2021-08-13 18:03:40,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:40,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:40,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:40,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:40,700 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:40,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 396 transitions, 25554 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:40,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:40,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:40,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:41,022 INFO L129 PetriNetUnfolder]: 62/910 cut-off events. [2021-08-13 18:03:41,023 INFO L130 PetriNetUnfolder]: For 60500/60632 co-relation queries the response was YES. [2021-08-13 18:03:41,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14021 conditions, 910 events. 62/910 cut-off events. For 60500/60632 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10564 event pairs, 0 based on Foata normal form. 9/872 useless extension candidates. Maximal degree in co-relation 13562. Up to 284 conditions per place. [2021-08-13 18:03:41,026 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 65 selfloop transitions, 27 changer transitions 286/395 dead transitions. [2021-08-13 18:03:41,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 395 transitions, 26242 flow [2021-08-13 18:03:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:03:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:03:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2021-08-13 18:03:41,027 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7564935064935064 [2021-08-13 18:03:41,027 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2021-08-13 18:03:41,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2021-08-13 18:03:41,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:41,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2021-08-13 18:03:41,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,028 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,028 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2021-08-13 18:03:41,028 INFO L482 AbstractCegarLoop]: Abstraction has has 270 places, 395 transitions, 26242 flow [2021-08-13 18:03:41,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,028 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:41,028 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:41,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 18:03:41,028 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:41,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1522621949, now seen corresponding path program 12 times [2021-08-13 18:03:41,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:41,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649255054] [2021-08-13 18:03:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:41,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,069 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:41,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:41,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:41,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:41,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649255054] [2021-08-13 18:03:41,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649255054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:41,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:41,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:41,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334292209] [2021-08-13 18:03:41,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:41,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:41,078 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:41,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 395 transitions, 26242 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:41,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:41,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:41,360 INFO L129 PetriNetUnfolder]: 62/924 cut-off events. [2021-08-13 18:03:41,360 INFO L130 PetriNetUnfolder]: For 66223/66481 co-relation queries the response was YES. [2021-08-13 18:03:41,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14597 conditions, 924 events. 62/924 cut-off events. For 66223/66481 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10738 event pairs, 0 based on Foata normal form. 6/882 useless extension candidates. Maximal degree in co-relation 14128. Up to 287 conditions per place. [2021-08-13 18:03:41,364 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 61 selfloop transitions, 31 changer transitions 293/402 dead transitions. [2021-08-13 18:03:41,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 402 transitions, 27438 flow [2021-08-13 18:03:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2021-08-13 18:03:41,365 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-08-13 18:03:41,365 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 209 transitions. [2021-08-13 18:03:41,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 209 transitions. [2021-08-13 18:03:41,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:41,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 209 transitions. [2021-08-13 18:03:41,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,366 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,366 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 252 predicate places. [2021-08-13 18:03:41,366 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 402 transitions, 27438 flow [2021-08-13 18:03:41,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,366 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:41,366 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:41,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 18:03:41,366 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:41,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1118271414, now seen corresponding path program 8 times [2021-08-13 18:03:41,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:41,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034365742] [2021-08-13 18:03:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:41,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,391 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:41,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:41,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:41,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:41,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034365742] [2021-08-13 18:03:41,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034365742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:41,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:41,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:41,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535175935] [2021-08-13 18:03:41,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:41,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:41,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:41,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:41,398 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:41,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 402 transitions, 27438 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:41,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:41,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:41,634 INFO L129 PetriNetUnfolder]: 61/928 cut-off events. [2021-08-13 18:03:41,634 INFO L130 PetriNetUnfolder]: For 70002/70224 co-relation queries the response was YES. [2021-08-13 18:03:41,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15018 conditions, 928 events. 61/928 cut-off events. For 70002/70224 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10829 event pairs, 0 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 14541. Up to 288 conditions per place. [2021-08-13 18:03:41,637 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 62 selfloop transitions, 23 changer transitions 300/403 dead transitions. [2021-08-13 18:03:41,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 403 transitions, 28270 flow [2021-08-13 18:03:41,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 18:03:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 18:03:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2021-08-13 18:03:41,638 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8112244897959183 [2021-08-13 18:03:41,638 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 159 transitions. [2021-08-13 18:03:41,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 159 transitions. [2021-08-13 18:03:41,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:41,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 159 transitions. [2021-08-13 18:03:41,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,639 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 258 predicate places. [2021-08-13 18:03:41,639 INFO L482 AbstractCegarLoop]: Abstraction has has 285 places, 403 transitions, 28270 flow [2021-08-13 18:03:41,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,639 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:41,639 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:41,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 18:03:41,639 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:41,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:41,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1856567209, now seen corresponding path program 13 times [2021-08-13 18:03:41,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:41,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175764274] [2021-08-13 18:03:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:41,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:41,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:41,670 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:41,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:41,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:41,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:41,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:41,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175764274] [2021-08-13 18:03:41,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175764274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:41,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:41,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:41,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640490969] [2021-08-13 18:03:41,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:41,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:41,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:41,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:41,681 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:41,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 403 transitions, 28270 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:41,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:41,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:41,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:42,001 INFO L129 PetriNetUnfolder]: 60/931 cut-off events. [2021-08-13 18:03:42,001 INFO L130 PetriNetUnfolder]: For 73123/73365 co-relation queries the response was YES. [2021-08-13 18:03:42,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15411 conditions, 931 events. 60/931 cut-off events. For 73123/73365 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10892 event pairs, 0 based on Foata normal form. 8/891 useless extension candidates. Maximal degree in co-relation 14965. Up to 288 conditions per place. [2021-08-13 18:03:42,004 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 57 selfloop transitions, 19 changer transitions 310/403 dead transitions. [2021-08-13 18:03:42,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 403 transitions, 29042 flow [2021-08-13 18:03:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2021-08-13 18:03:42,005 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-08-13 18:03:42,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 175 transitions. [2021-08-13 18:03:42,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 175 transitions. [2021-08-13 18:03:42,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:42,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 175 transitions. [2021-08-13 18:03:42,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,006 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 265 predicate places. [2021-08-13 18:03:42,006 INFO L482 AbstractCegarLoop]: Abstraction has has 292 places, 403 transitions, 29042 flow [2021-08-13 18:03:42,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,006 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:42,006 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:42,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 18:03:42,006 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash 827759971, now seen corresponding path program 14 times [2021-08-13 18:03:42,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:42,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153133538] [2021-08-13 18:03:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:42,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:42,039 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:42,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:42,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:42,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:42,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153133538] [2021-08-13 18:03:42,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153133538] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:42,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:42,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163460835] [2021-08-13 18:03:42,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:42,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:42,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:42,048 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:42,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 403 transitions, 29042 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:42,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:42,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:42,313 INFO L129 PetriNetUnfolder]: 60/928 cut-off events. [2021-08-13 18:03:42,313 INFO L130 PetriNetUnfolder]: For 76452/76700 co-relation queries the response was YES. [2021-08-13 18:03:42,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 928 events. 60/928 cut-off events. For 76452/76700 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10858 event pairs, 0 based on Foata normal form. 8/888 useless extension candidates. Maximal degree in co-relation 15345. Up to 287 conditions per place. [2021-08-13 18:03:42,316 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 38 selfloop transitions, 10 changer transitions 338/402 dead transitions. [2021-08-13 18:03:42,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 402 transitions, 29736 flow [2021-08-13 18:03:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2021-08-13 18:03:42,317 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-08-13 18:03:42,317 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 176 transitions. [2021-08-13 18:03:42,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 176 transitions. [2021-08-13 18:03:42,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:42,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 176 transitions. [2021-08-13 18:03:42,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,318 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,318 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 272 predicate places. [2021-08-13 18:03:42,318 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 402 transitions, 29736 flow [2021-08-13 18:03:42,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,318 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:42,318 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:42,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 18:03:42,318 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash 261962741, now seen corresponding path program 15 times [2021-08-13 18:03:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:42,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230977194] [2021-08-13 18:03:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:42,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:42,349 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:42,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:42,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:42,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:42,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230977194] [2021-08-13 18:03:42,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230977194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:42,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:42,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:42,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883777899] [2021-08-13 18:03:42,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:42,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:42,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:42,358 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:42,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 402 transitions, 29736 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:42,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:42,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:42,720 INFO L129 PetriNetUnfolder]: 54/959 cut-off events. [2021-08-13 18:03:42,721 INFO L130 PetriNetUnfolder]: For 81331/81593 co-relation queries the response was YES. [2021-08-13 18:03:42,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16536 conditions, 959 events. 54/959 cut-off events. For 81331/81593 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11429 event pairs, 0 based on Foata normal form. 11/922 useless extension candidates. Maximal degree in co-relation 16066. Up to 296 conditions per place. [2021-08-13 18:03:42,724 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 27 selfloop transitions, 19 changer transitions 349/411 dead transitions. [2021-08-13 18:03:42,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 411 transitions, 31226 flow [2021-08-13 18:03:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:42,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2021-08-13 18:03:42,725 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2021-08-13 18:03:42,725 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 259 transitions. [2021-08-13 18:03:42,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 259 transitions. [2021-08-13 18:03:42,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:42,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 259 transitions. [2021-08-13 18:03:42,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.583333333333332) internal successors, (259), 12 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,726 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,726 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 283 predicate places. [2021-08-13 18:03:42,726 INFO L482 AbstractCegarLoop]: Abstraction has has 310 places, 411 transitions, 31226 flow [2021-08-13 18:03:42,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,726 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:42,726 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:42,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 18:03:42,726 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -124734963, now seen corresponding path program 16 times [2021-08-13 18:03:42,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:42,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781759670] [2021-08-13 18:03:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:42,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:42,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:42,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:42,758 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:42,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:42,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:42,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:42,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:42,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781759670] [2021-08-13 18:03:42,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781759670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:42,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:42,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:42,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867567465] [2021-08-13 18:03:42,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:42,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:42,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:42,767 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:42,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 411 transitions, 31226 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:42,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:42,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:42,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:43,144 INFO L129 PetriNetUnfolder]: 52/963 cut-off events. [2021-08-13 18:03:43,144 INFO L130 PetriNetUnfolder]: For 84528/84778 co-relation queries the response was YES. [2021-08-13 18:03:43,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16977 conditions, 963 events. 52/963 cut-off events. For 84528/84778 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11522 event pairs, 0 based on Foata normal form. 11/926 useless extension candidates. Maximal degree in co-relation 16540. Up to 297 conditions per place. [2021-08-13 18:03:43,147 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 22 selfloop transitions, 17 changer transitions 357/412 dead transitions. [2021-08-13 18:03:43,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 412 transitions, 32096 flow [2021-08-13 18:03:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 255 transitions. [2021-08-13 18:03:43,148 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7589285714285714 [2021-08-13 18:03:43,148 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 255 transitions. [2021-08-13 18:03:43,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 255 transitions. [2021-08-13 18:03:43,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:43,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 255 transitions. [2021-08-13 18:03:43,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.25) internal successors, (255), 12 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,149 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,149 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 294 predicate places. [2021-08-13 18:03:43,149 INFO L482 AbstractCegarLoop]: Abstraction has has 321 places, 412 transitions, 32096 flow [2021-08-13 18:03:43,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,149 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:43,149 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:43,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 18:03:43,150 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:43,150 INFO L82 PathProgramCache]: Analyzing trace with hash -630211965, now seen corresponding path program 17 times [2021-08-13 18:03:43,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:43,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982245999] [2021-08-13 18:03:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:43,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:43,182 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:43,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:43,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:43,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:43,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982245999] [2021-08-13 18:03:43,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982245999] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:43,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:43,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:43,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524588696] [2021-08-13 18:03:43,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:43,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:43,191 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:43,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 412 transitions, 32096 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:43,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:43,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:43,553 INFO L129 PetriNetUnfolder]: 52/961 cut-off events. [2021-08-13 18:03:43,553 INFO L130 PetriNetUnfolder]: For 88030/88288 co-relation queries the response was YES. [2021-08-13 18:03:43,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17330 conditions, 961 events. 52/961 cut-off events. For 88030/88288 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 11521 event pairs, 0 based on Foata normal form. 11/924 useless extension candidates. Maximal degree in co-relation 16932. Up to 296 conditions per place. [2021-08-13 18:03:43,555 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 19 selfloop transitions, 9 changer transitions 367/411 dead transitions. [2021-08-13 18:03:43,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 411 transitions, 32802 flow [2021-08-13 18:03:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-13 18:03:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-08-13 18:03:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2021-08-13 18:03:43,556 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7648809523809523 [2021-08-13 18:03:43,556 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 257 transitions. [2021-08-13 18:03:43,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 257 transitions. [2021-08-13 18:03:43,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:43,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 257 transitions. [2021-08-13 18:03:43,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.416666666666668) internal successors, (257), 12 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,557 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 28.0) internal successors, (364), 13 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,558 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 305 predicate places. [2021-08-13 18:03:43,558 INFO L482 AbstractCegarLoop]: Abstraction has has 332 places, 411 transitions, 32802 flow [2021-08-13 18:03:43,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,558 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:43,558 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:43,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 18:03:43,558 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:43,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:43,558 INFO L82 PathProgramCache]: Analyzing trace with hash -657508570, now seen corresponding path program 9 times [2021-08-13 18:03:43,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:43,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845124943] [2021-08-13 18:03:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:43,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:43,582 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:43,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:43,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:43,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:43,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845124943] [2021-08-13 18:03:43,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845124943] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:43,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:43,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:43,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581348560] [2021-08-13 18:03:43,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:43,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:43,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:43,590 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:43,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 411 transitions, 32802 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:43,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:43,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:43,929 INFO L129 PetriNetUnfolder]: 51/964 cut-off events. [2021-08-13 18:03:43,929 INFO L130 PetriNetUnfolder]: For 92810/93098 co-relation queries the response was YES. [2021-08-13 18:03:43,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17724 conditions, 964 events. 51/964 cut-off events. For 92810/93098 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 11573 event pairs, 0 based on Foata normal form. 2/918 useless extension candidates. Maximal degree in co-relation 17321. Up to 296 conditions per place. [2021-08-13 18:03:43,932 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 19 selfloop transitions, 6 changer transitions 369/411 dead transitions. [2021-08-13 18:03:43,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 411 transitions, 33578 flow [2021-08-13 18:03:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2021-08-13 18:03:43,933 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2021-08-13 18:03:43,933 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 222 transitions. [2021-08-13 18:03:43,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 222 transitions. [2021-08-13 18:03:43,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:43,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 222 transitions. [2021-08-13 18:03:43,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.2) internal successors, (222), 10 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,934 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,934 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 314 predicate places. [2021-08-13 18:03:43,934 INFO L482 AbstractCegarLoop]: Abstraction has has 341 places, 411 transitions, 33578 flow [2021-08-13 18:03:43,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,934 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:43,934 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:43,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 18:03:43,934 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:43,935 INFO L82 PathProgramCache]: Analyzing trace with hash 283787782, now seen corresponding path program 10 times [2021-08-13 18:03:43,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:43,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359854004] [2021-08-13 18:03:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:43,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:43,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:43,961 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:43,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:43,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:43,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:43,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:43,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359854004] [2021-08-13 18:03:43,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359854004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:43,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:43,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 18:03:43,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426524574] [2021-08-13 18:03:43,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 18:03:43,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:43,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 18:03:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 18:03:43,970 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 28 [2021-08-13 18:03:43,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 411 transitions, 33578 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:43,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:43,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 28 [2021-08-13 18:03:43,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:44,288 INFO L129 PetriNetUnfolder]: 50/966 cut-off events. [2021-08-13 18:03:44,288 INFO L130 PetriNetUnfolder]: For 96158/96444 co-relation queries the response was YES. [2021-08-13 18:03:44,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18117 conditions, 966 events. 50/966 cut-off events. For 96158/96444 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11637 event pairs, 0 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 17754. Up to 296 conditions per place. [2021-08-13 18:03:44,291 INFO L132 encePairwiseOnDemand]: 20/28 looper letters, 16 selfloop transitions, 2 changer transitions 377/411 dead transitions. [2021-08-13 18:03:44,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 411 transitions, 34354 flow [2021-08-13 18:03:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 18:03:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 18:03:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2021-08-13 18:03:44,293 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7892857142857143 [2021-08-13 18:03:44,293 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 221 transitions. [2021-08-13 18:03:44,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 221 transitions. [2021-08-13 18:03:44,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:44,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 221 transitions. [2021-08-13 18:03:44,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,294 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,294 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 323 predicate places. [2021-08-13 18:03:44,294 INFO L482 AbstractCegarLoop]: Abstraction has has 350 places, 411 transitions, 34354 flow [2021-08-13 18:03:44,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,294 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:44,294 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:44,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 18:03:44,294 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:44,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2029514105, now seen corresponding path program 18 times [2021-08-13 18:03:44,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:44,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276131091] [2021-08-13 18:03:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:44,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:44,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:44,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:44,331 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:44,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:44,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:44,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:44,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276131091] [2021-08-13 18:03:44,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276131091] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:44,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:44,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:44,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772710950] [2021-08-13 18:03:44,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:44,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:44,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:44,340 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:44,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 411 transitions, 34354 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:44,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:44,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:44,697 INFO L129 PetriNetUnfolder]: 46/1050 cut-off events. [2021-08-13 18:03:44,698 INFO L130 PetriNetUnfolder]: For 104894/105232 co-relation queries the response was YES. [2021-08-13 18:03:44,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19946 conditions, 1050 events. 46/1050 cut-off events. For 104894/105232 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13035 event pairs, 0 based on Foata normal form. 6/1006 useless extension candidates. Maximal degree in co-relation 19553. Up to 319 conditions per place. [2021-08-13 18:03:44,700 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 7 selfloop transitions, 6 changer transitions 413/441 dead transitions. [2021-08-13 18:03:44,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 441 transitions, 37842 flow [2021-08-13 18:03:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 18:03:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 18:03:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2021-08-13 18:03:44,701 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7723214285714286 [2021-08-13 18:03:44,701 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 173 transitions. [2021-08-13 18:03:44,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 173 transitions. [2021-08-13 18:03:44,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:44,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 173 transitions. [2021-08-13 18:03:44,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,702 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,702 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 330 predicate places. [2021-08-13 18:03:44,702 INFO L482 AbstractCegarLoop]: Abstraction has has 357 places, 441 transitions, 37842 flow [2021-08-13 18:03:44,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,703 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:44,703 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:44,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 18:03:44,703 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1459440643, now seen corresponding path program 19 times [2021-08-13 18:03:44,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:44,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517000395] [2021-08-13 18:03:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:44,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:44,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:44,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:44,745 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:44,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:44,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:44,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:44,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517000395] [2021-08-13 18:03:44,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517000395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:44,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:44,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:44,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950740885] [2021-08-13 18:03:44,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:44,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:44,754 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:44,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 441 transitions, 37842 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:44,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:44,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:44,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:45,130 INFO L129 PetriNetUnfolder]: 45/1053 cut-off events. [2021-08-13 18:03:45,130 INFO L130 PetriNetUnfolder]: For 109723/110067 co-relation queries the response was YES. [2021-08-13 18:03:45,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20376 conditions, 1053 events. 45/1053 cut-off events. For 109723/110067 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13083 event pairs, 0 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 19979. Up to 319 conditions per place. [2021-08-13 18:03:45,133 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 4 selfloop transitions, 7 changer transitions 415/441 dead transitions. [2021-08-13 18:03:45,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 441 transitions, 38690 flow [2021-08-13 18:03:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:03:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:03:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2021-08-13 18:03:45,133 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7564935064935064 [2021-08-13 18:03:45,134 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2021-08-13 18:03:45,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2021-08-13 18:03:45,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:45,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2021-08-13 18:03:45,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,136 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,136 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 340 predicate places. [2021-08-13 18:03:45,136 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 441 transitions, 38690 flow [2021-08-13 18:03:45,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,136 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 18:03:45,137 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 18:03:45,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 18:03:45,137 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 18:03:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 18:03:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2106733329, now seen corresponding path program 20 times [2021-08-13 18:03:45,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 18:03:45,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029707765] [2021-08-13 18:03:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 18:03:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 18:03:45,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:45,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:45,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:45,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:45,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 18:03:45,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 18:03:45,171 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 18:03:45,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 18:03:45,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 18:03:45,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 18:03:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 18:03:45,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 18:03:45,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029707765] [2021-08-13 18:03:45,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029707765] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 18:03:45,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 18:03:45,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 18:03:45,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105487102] [2021-08-13 18:03:45,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 18:03:45,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 18:03:45,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 18:03:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 18:03:45,180 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 28 [2021-08-13 18:03:45,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 441 transitions, 38690 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 18:03:45,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 28 [2021-08-13 18:03:45,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 18:03:45,593 INFO L129 PetriNetUnfolder]: 44/1055 cut-off events. [2021-08-13 18:03:45,594 INFO L130 PetriNetUnfolder]: For 113720/114090 co-relation queries the response was YES. [2021-08-13 18:03:45,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20805 conditions, 1055 events. 44/1055 cut-off events. For 113720/114090 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13170 event pairs, 0 based on Foata normal form. 4/1009 useless extension candidates. Maximal degree in co-relation 20452. Up to 319 conditions per place. [2021-08-13 18:03:45,596 INFO L132 encePairwiseOnDemand]: 19/28 looper letters, 0 selfloop transitions, 0 changer transitions 440/440 dead transitions. [2021-08-13 18:03:45,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 440 transitions, 39536 flow [2021-08-13 18:03:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 18:03:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 18:03:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2021-08-13 18:03:45,597 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7532467532467533 [2021-08-13 18:03:45,597 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2021-08-13 18:03:45,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2021-08-13 18:03:45,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 18:03:45,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2021-08-13 18:03:45,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,598 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 28.0) internal successors, (336), 12 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,598 INFO L348 CegarLoopForPetriNet]: 27 programPoint places, 348 predicate places. [2021-08-13 18:03:45,598 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 440 transitions, 39536 flow [2021-08-13 18:03:45,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 18:03:45,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown