/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/mcr/example_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:57:14,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:57:14,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:57:14,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 17:57:14,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:57:14,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:57:14,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:57:14,767 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 17:57:14,801 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:57:14,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:57:14,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:57:14,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:57:14,805 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:57:14,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:57:14,805 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:57:14,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:57:14,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:57:14,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:57:14,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:57:14,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:57:14,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:57:14,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:57:14,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:57:14,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:57:14,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:57:14,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:57:14,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:57:14,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:57:14,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:57:14,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:57:14,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:57:14,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:57:14,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:57:14,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:57:14,810 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:57:14,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:57:14,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:57:15,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:57:15,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:57:15,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:57:15,120 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:57:15,121 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:57:15,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl [2021-08-13 17:57:15,122 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl' [2021-08-13 17:57:15,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:57:15,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:57:15,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:15,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:57:15,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:57:15,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:15,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:57:15,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:57:15,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:57:15,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/1) ... [2021-08-13 17:57:15,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:57:15,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:57:15,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:57:15,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:57:15,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (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 17:57:15,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 17:57:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 17:57:15,264 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 17:57:15,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 17:57:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 17:57:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 17:57:15,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 17:57:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 17:57:15,265 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 17:57:15,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 17:57:15,266 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 17:57:15,266 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 17:57:15,267 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 17:57:15,267 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 17:57:15,267 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 17:57:15,267 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:57:15,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:57:15,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:57:15,269 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 17:57:15,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:57:15,427 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:57:15,429 INFO L202 PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:15 BoogieIcfgContainer [2021-08-13 17:57:15,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:57:15,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:57:15,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:57:15,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:57:15,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:15" (1/2) ... [2021-08-13 17:57:15,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5a5370 and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:57:15, skipping insertion in model container [2021-08-13 17:57:15,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:15" (2/2) ... [2021-08-13 17:57:15,436 INFO L111 eAbstractionObserver]: Analyzing ICFG example_5.bpl [2021-08-13 17:57:15,444 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:57:15,445 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:57:15,445 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:57:15,569 INFO L149 ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions. [2021-08-13 17:57:15,587 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-13 17:57:15,627 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:57:15,628 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:57:15,628 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:57:15,628 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:57:15,628 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:57:15,628 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:57:15,628 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:57:15,628 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:57:15,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 196 flow [2021-08-13 17:57:15,711 INFO L129 PetriNetUnfolder]: 49/98 cut-off events. [2021-08-13 17:57:15,711 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-08-13 17:57:15,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 98 events. 49/98 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 331 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 86. Up to 30 conditions per place. [2021-08-13 17:57:15,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 48 transitions, 196 flow [2021-08-13 17:57:15,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 41 transitions, 172 flow [2021-08-13 17:57:15,756 INFO L129 PetriNetUnfolder]: 49/95 cut-off events. [2021-08-13 17:57:15,756 INFO L130 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2021-08-13 17:57:15,757 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:15,757 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:15,758 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1097768696, now seen corresponding path program 1 times [2021-08-13 17:57:15,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:15,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986682252] [2021-08-13 17:57:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:15,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:15,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:15,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:15,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:15,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:15,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:15,885 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 17:57:15,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:15,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986682252] [2021-08-13 17:57:15,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986682252] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:15,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:15,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:15,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3014925] [2021-08-13 17:57:15,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:15,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:15,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:15,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:15,906 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 17:57:15,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:15,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:15,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 17:57:15,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:15,959 INFO L129 PetriNetUnfolder]: 33/75 cut-off events. [2021-08-13 17:57:15,960 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2021-08-13 17:57:15,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 75 events. 33/75 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 192 event pairs, 0 based on Foata normal form. 5/80 useless extension candidates. Maximal degree in co-relation 80. Up to 20 conditions per place. [2021-08-13 17:57:15,963 INFO L132 encePairwiseOnDemand]: 45/48 looper letters, 3 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2021-08-13 17:57:15,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 170 flow [2021-08-13 17:57:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-08-13 17:57:15,976 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 17:57:15,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-08-13 17:57:15,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-08-13 17:57:15,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:15,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-08-13 17:57:15,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 17:57:15,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:15,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:15,996 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2021-08-13 17:57:15,996 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 170 flow [2021-08-13 17:57:15,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:15,996 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:15,997 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:15,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:57:15,997 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1642039334, now seen corresponding path program 1 times [2021-08-13 17:57:15,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326179030] [2021-08-13 17:57:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:16,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,053 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 17:57:16,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:16,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326179030] [2021-08-13 17:57:16,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326179030] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:16,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:16,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:16,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035137639] [2021-08-13 17:57:16,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:16,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:16,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:16,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:16,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 17:57:16,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:16,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:16,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 17:57:16,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:16,069 INFO L129 PetriNetUnfolder]: 8/36 cut-off events. [2021-08-13 17:57:16,070 INFO L130 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2021-08-13 17:57:16,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 8/36 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 11/47 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2021-08-13 17:57:16,071 INFO L132 encePairwiseOnDemand]: 43/48 looper letters, 1 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2021-08-13 17:57:16,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 132 flow [2021-08-13 17:57:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2021-08-13 17:57:16,072 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 17:57:16,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 132 transitions. [2021-08-13 17:57:16,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 132 transitions. [2021-08-13 17:57:16,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:16,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 132 transitions. [2021-08-13 17:57:16,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 17:57:16,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:16,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:16,075 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-08-13 17:57:16,075 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 132 flow [2021-08-13 17:57:16,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:16,076 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:16,076 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:16,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:57:16,076 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:16,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:16,077 INFO L82 PathProgramCache]: Analyzing trace with hash 171380984, now seen corresponding path program 1 times [2021-08-13 17:57:16,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937043338] [2021-08-13 17:57:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:16,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:16,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:16,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:16,173 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:16,200 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:16,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:16,223 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 17:57:16,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:16,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937043338] [2021-08-13 17:57:16,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937043338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:16,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:16,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:16,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721721303] [2021-08-13 17:57:16,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:16,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:16,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:16,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:16,227 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:16,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:16,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:16,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:16,323 INFO L129 PetriNetUnfolder]: 138/366 cut-off events. [2021-08-13 17:57:16,323 INFO L130 PetriNetUnfolder]: For 294/294 co-relation queries the response was YES. [2021-08-13 17:57:16,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 366 events. 138/366 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2308 event pairs, 17 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 692. Up to 78 conditions per place. [2021-08-13 17:57:16,329 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 14 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2021-08-13 17:57:16,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 196 flow [2021-08-13 17:57:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:16,332 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:16,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:16,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:16,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,336 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2021-08-13 17:57:16,336 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 196 flow [2021-08-13 17:57:16,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,336 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:16,336 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:16,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:57:16,337 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:16,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1083991818, now seen corresponding path program 1 times [2021-08-13 17:57:16,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608367686] [2021-08-13 17:57:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:16,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,356 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 17:57:16,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:16,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608367686] [2021-08-13 17:57:16,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608367686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:16,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:16,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:16,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620645997] [2021-08-13 17:57:16,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:16,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:16,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:16,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:16,359 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 17:57:16,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:16,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:16,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 17:57:16,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:16,382 INFO L129 PetriNetUnfolder]: 62/216 cut-off events. [2021-08-13 17:57:16,382 INFO L130 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2021-08-13 17:57:16,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 216 events. 62/216 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1252 event pairs, 17 based on Foata normal form. 51/254 useless extension candidates. Maximal degree in co-relation 374. Up to 41 conditions per place. [2021-08-13 17:57:16,385 INFO L132 encePairwiseOnDemand]: 44/48 looper letters, 1 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2021-08-13 17:57:16,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 158 flow [2021-08-13 17:57:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2021-08-13 17:57:16,386 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9097222222222222 [2021-08-13 17:57:16,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2021-08-13 17:57:16,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2021-08-13 17:57:16,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:16,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2021-08-13 17:57:16,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 17:57:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:16,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:16,389 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2021-08-13 17:57:16,389 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 158 flow [2021-08-13 17:57:16,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:16,389 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:16,389 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:16,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:57:16,390 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash 523901692, now seen corresponding path program 2 times [2021-08-13 17:57:16,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473905976] [2021-08-13 17:57:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:16,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:16,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:16,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:16,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:16,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:16,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:16,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:16,574 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 17:57:16,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:16,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473905976] [2021-08-13 17:57:16,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473905976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:16,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:16,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:16,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375788198] [2021-08-13 17:57:16,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:16,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:16,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:16,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:16,578 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:16,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:16,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:16,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:16,701 INFO L129 PetriNetUnfolder]: 69/305 cut-off events. [2021-08-13 17:57:16,702 INFO L130 PetriNetUnfolder]: For 211/281 co-relation queries the response was YES. [2021-08-13 17:57:16,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 305 events. 69/305 cut-off events. For 211/281 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2046 event pairs, 5 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 634. Up to 56 conditions per place. [2021-08-13 17:57:16,706 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 33 selfloop transitions, 14 changer transitions 0/64 dead transitions. [2021-08-13 17:57:16,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 364 flow [2021-08-13 17:57:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:16,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:16,708 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:16,708 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:16,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:16,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,711 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2021-08-13 17:57:16,711 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 364 flow [2021-08-13 17:57:16,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,712 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:16,712 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:16,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:57:16,712 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 364037284, now seen corresponding path program 3 times [2021-08-13 17:57:16,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446254270] [2021-08-13 17:57:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:16,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:16,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:16,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:16,810 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:16,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:16,830 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:16,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:16,847 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 17:57:16,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:16,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446254270] [2021-08-13 17:57:16,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446254270] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:16,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:16,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:16,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208063976] [2021-08-13 17:57:16,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:16,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:16,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:16,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:16,850 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:16,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:16,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:16,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:16,956 INFO L129 PetriNetUnfolder]: 69/414 cut-off events. [2021-08-13 17:57:16,956 INFO L130 PetriNetUnfolder]: For 395/515 co-relation queries the response was YES. [2021-08-13 17:57:16,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 414 events. 69/414 cut-off events. For 395/515 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3338 event pairs, 1 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 975. Up to 78 conditions per place. [2021-08-13 17:57:16,960 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 69 selfloop transitions, 31 changer transitions 0/117 dead transitions. [2021-08-13 17:57:16,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 882 flow [2021-08-13 17:57:16,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:16,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:16,961 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:16,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:16,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:16,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:16,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:16,964 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2021-08-13 17:57:16,964 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 117 transitions, 882 flow [2021-08-13 17:57:16,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:16,964 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:16,964 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:16,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:57:16,964 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash 693585500, now seen corresponding path program 4 times [2021-08-13 17:57:16,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:16,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336193266] [2021-08-13 17:57:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:16,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:16,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:16,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:16,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:17,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:17,009 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:17,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:17,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:17,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:17,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:17,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:17,082 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 17:57:17,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:17,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336193266] [2021-08-13 17:57:17,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336193266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:17,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:17,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:17,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208746266] [2021-08-13 17:57:17,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:17,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:17,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:17,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:17,085 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:17,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 117 transitions, 882 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:17,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:17,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:17,201 INFO L129 PetriNetUnfolder]: 72/460 cut-off events. [2021-08-13 17:57:17,201 INFO L130 PetriNetUnfolder]: For 575/821 co-relation queries the response was YES. [2021-08-13 17:57:17,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 460 events. 72/460 cut-off events. For 575/821 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3882 event pairs, 0 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 1235. Up to 90 conditions per place. [2021-08-13 17:57:17,205 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2021-08-13 17:57:17,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 168 transitions, 1592 flow [2021-08-13 17:57:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:17,207 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:17,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:17,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:17,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,210 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,210 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2021-08-13 17:57:17,210 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 168 transitions, 1592 flow [2021-08-13 17:57:17,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,210 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:17,210 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:17,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:57:17,211 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1638813150, now seen corresponding path program 5 times [2021-08-13 17:57:17,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:17,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489008401] [2021-08-13 17:57:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:17,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:17,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:17,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:17,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:17,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:17,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:17,278 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:17,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:17,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:17,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:17,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:17,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489008401] [2021-08-13 17:57:17,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489008401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:17,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:17,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:17,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727099163] [2021-08-13 17:57:17,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:17,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:17,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:17,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:17,322 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:17,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 168 transitions, 1592 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:17,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:17,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:17,443 INFO L129 PetriNetUnfolder]: 76/510 cut-off events. [2021-08-13 17:57:17,444 INFO L130 PetriNetUnfolder]: For 895/1577 co-relation queries the response was YES. [2021-08-13 17:57:17,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 510 events. 76/510 cut-off events. For 895/1577 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4499 event pairs, 0 based on Foata normal form. 24/523 useless extension candidates. Maximal degree in co-relation 1513. Up to 97 conditions per place. [2021-08-13 17:57:17,449 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 56 changer transitions 0/207 dead transitions. [2021-08-13 17:57:17,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 207 transitions, 2362 flow [2021-08-13 17:57:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:17,450 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:17,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:17,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:17,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,453 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2021-08-13 17:57:17,453 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 207 transitions, 2362 flow [2021-08-13 17:57:17,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,453 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:17,453 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:17,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:57:17,453 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -499541310, now seen corresponding path program 6 times [2021-08-13 17:57:17,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:17,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57342595] [2021-08-13 17:57:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:17,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:17,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:17,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:17,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:17,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:17,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:17,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:17,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:17,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:17,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:17,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:17,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57342595] [2021-08-13 17:57:17,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57342595] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:17,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:17,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:17,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116490489] [2021-08-13 17:57:17,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:17,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:17,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:17,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:17,557 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:17,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 207 transitions, 2362 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:17,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:17,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:17,672 INFO L129 PetriNetUnfolder]: 69/495 cut-off events. [2021-08-13 17:57:17,672 INFO L130 PetriNetUnfolder]: For 1077/1645 co-relation queries the response was YES. [2021-08-13 17:57:17,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 495 events. 69/495 cut-off events. For 1077/1645 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4370 event pairs, 0 based on Foata normal form. 33/514 useless extension candidates. Maximal degree in co-relation 1637. Up to 99 conditions per place. [2021-08-13 17:57:17,677 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 135 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2021-08-13 17:57:17,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 209 transitions, 2770 flow [2021-08-13 17:57:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:17,679 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:17,679 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:17,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:17,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,681 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2021-08-13 17:57:17,682 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 209 transitions, 2770 flow [2021-08-13 17:57:17,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,682 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:17,682 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:17,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:57:17,682 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1432304522, now seen corresponding path program 7 times [2021-08-13 17:57:17,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:17,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114004350] [2021-08-13 17:57:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:17,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:17,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:17,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:17,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:17,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:17,733 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:17,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:17,754 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:17,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:17,774 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 17:57:17,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:17,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114004350] [2021-08-13 17:57:17,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114004350] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:17,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:17,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:17,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764172145] [2021-08-13 17:57:17,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:17,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:17,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:17,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:17,776 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:17,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 209 transitions, 2770 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:17,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:17,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:17,915 INFO L129 PetriNetUnfolder]: 68/538 cut-off events. [2021-08-13 17:57:17,915 INFO L130 PetriNetUnfolder]: For 1742/3068 co-relation queries the response was YES. [2021-08-13 17:57:17,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2291 conditions, 538 events. 68/538 cut-off events. For 1742/3068 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5007 event pairs, 0 based on Foata normal form. 56/580 useless extension candidates. Maximal degree in co-relation 1906. Up to 109 conditions per place. [2021-08-13 17:57:17,921 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 60 changer transitions 0/219 dead transitions. [2021-08-13 17:57:17,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 219 transitions, 3314 flow [2021-08-13 17:57:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:17,922 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:17,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:17,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:17,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:17,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:17,925 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2021-08-13 17:57:17,925 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 219 transitions, 3314 flow [2021-08-13 17:57:17,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:17,925 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:17,925 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:17,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:57:17,926 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:17,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1431984106, now seen corresponding path program 1 times [2021-08-13 17:57:17,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:17,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122592462] [2021-08-13 17:57:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:17,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:17,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:17,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:17,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:17,939 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 17:57:17,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:17,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122592462] [2021-08-13 17:57:17,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122592462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:17,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:17,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:17,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627298829] [2021-08-13 17:57:17,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:17,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:17,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:17,941 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 48 [2021-08-13 17:57:17,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 219 transitions, 3314 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:17,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:17,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 48 [2021-08-13 17:57:17,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:18,005 INFO L129 PetriNetUnfolder]: 41/504 cut-off events. [2021-08-13 17:57:18,006 INFO L130 PetriNetUnfolder]: For 1892/2960 co-relation queries the response was YES. [2021-08-13 17:57:18,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 504 events. 41/504 cut-off events. For 1892/2960 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4796 event pairs, 0 based on Foata normal form. 32/524 useless extension candidates. Maximal degree in co-relation 1878. Up to 109 conditions per place. [2021-08-13 17:57:18,009 INFO L132 encePairwiseOnDemand]: 46/48 looper letters, 1 selfloop transitions, 1 changer transitions 15/217 dead transitions. [2021-08-13 17:57:18,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 217 transitions, 3308 flow [2021-08-13 17:57:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2021-08-13 17:57:18,010 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8958333333333334 [2021-08-13 17:57:18,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2021-08-13 17:57:18,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2021-08-13 17:57:18,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:18,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2021-08-13 17:57:18,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 17:57:18,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:18,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 17:57:18,012 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2021-08-13 17:57:18,012 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 217 transitions, 3308 flow [2021-08-13 17:57:18,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 17:57:18,012 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:18,013 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:18,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:57:18,013 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1116480152, now seen corresponding path program 8 times [2021-08-13 17:57:18,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:18,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725040611] [2021-08-13 17:57:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:18,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:18,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:18,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:18,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:18,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:18,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:18,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:18,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:18,091 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:18,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:18,111 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 17:57:18,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:18,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725040611] [2021-08-13 17:57:18,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725040611] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:18,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:18,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:18,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054116304] [2021-08-13 17:57:18,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:18,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:18,114 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:18,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 217 transitions, 3308 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:18,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:18,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:18,239 INFO L129 PetriNetUnfolder]: 39/513 cut-off events. [2021-08-13 17:57:18,240 INFO L130 PetriNetUnfolder]: For 2452/4062 co-relation queries the response was YES. [2021-08-13 17:57:18,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 513 events. 39/513 cut-off events. For 2452/4062 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4956 event pairs, 0 based on Foata normal form. 59/560 useless extension candidates. Maximal degree in co-relation 2068. Up to 111 conditions per place. [2021-08-13 17:57:18,243 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 52 changer transitions 18/219 dead transitions. [2021-08-13 17:57:18,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 219 transitions, 3748 flow [2021-08-13 17:57:18,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:18,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:18,245 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:18,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:18,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:18,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,248 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 56 predicate places. [2021-08-13 17:57:18,248 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 219 transitions, 3748 flow [2021-08-13 17:57:18,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,248 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:18,248 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:18,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:57:18,248 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:18,249 INFO L82 PathProgramCache]: Analyzing trace with hash -465368498, now seen corresponding path program 9 times [2021-08-13 17:57:18,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:18,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456539543] [2021-08-13 17:57:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:18,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:18,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:18,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:18,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:18,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:18,298 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:18,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:18,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:18,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:18,340 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 17:57:18,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:18,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456539543] [2021-08-13 17:57:18,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456539543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:18,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:18,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:18,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680518830] [2021-08-13 17:57:18,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:18,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:18,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:18,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:18,342 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:18,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 219 transitions, 3748 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:18,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:18,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:18,460 INFO L129 PetriNetUnfolder]: 30/571 cut-off events. [2021-08-13 17:57:18,461 INFO L130 PetriNetUnfolder]: For 3421/5147 co-relation queries the response was YES. [2021-08-13 17:57:18,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 571 events. 30/571 cut-off events. For 3421/5147 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5835 event pairs, 0 based on Foata normal form. 56/614 useless extension candidates. Maximal degree in co-relation 2380. Up to 128 conditions per place. [2021-08-13 17:57:18,464 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 144 selfloop transitions, 57 changer transitions 20/236 dead transitions. [2021-08-13 17:57:18,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 236 transitions, 4496 flow [2021-08-13 17:57:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:18,466 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:18,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:18,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:18,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,468 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2021-08-13 17:57:18,468 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 236 transitions, 4496 flow [2021-08-13 17:57:18,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,468 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:18,468 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:18,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:57:18,468 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:18,469 INFO L82 PathProgramCache]: Analyzing trace with hash -770972178, now seen corresponding path program 10 times [2021-08-13 17:57:18,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:18,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581093561] [2021-08-13 17:57:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:18,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:18,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:18,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:18,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:18,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:18,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:18,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:18,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:18,538 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:18,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:18,556 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 17:57:18,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:18,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581093561] [2021-08-13 17:57:18,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581093561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:18,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:18,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:18,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638970258] [2021-08-13 17:57:18,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:18,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:18,559 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:18,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 236 transitions, 4496 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:18,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:18,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:18,701 INFO L129 PetriNetUnfolder]: 30/575 cut-off events. [2021-08-13 17:57:18,701 INFO L130 PetriNetUnfolder]: For 4229/6155 co-relation queries the response was YES. [2021-08-13 17:57:18,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 575 events. 30/575 cut-off events. For 4229/6155 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5892 event pairs, 0 based on Foata normal form. 56/616 useless extension candidates. Maximal degree in co-relation 2576. Up to 127 conditions per place. [2021-08-13 17:57:18,705 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 54 changer transitions 24/235 dead transitions. [2021-08-13 17:57:18,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 235 transitions, 4916 flow [2021-08-13 17:57:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:18,706 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:18,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:18,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,708 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2021-08-13 17:57:18,708 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 235 transitions, 4916 flow [2021-08-13 17:57:18,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,709 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:18,709 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:18,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:57:18,709 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash -751610382, now seen corresponding path program 11 times [2021-08-13 17:57:18,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:18,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549603019] [2021-08-13 17:57:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:18,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:18,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:18,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:18,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:18,765 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:18,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:18,787 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:18,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:18,807 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 17:57:18,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:18,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549603019] [2021-08-13 17:57:18,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549603019] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:18,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:18,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:18,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970011120] [2021-08-13 17:57:18,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:18,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:18,809 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:18,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 235 transitions, 4916 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:18,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:18,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:18,934 INFO L129 PetriNetUnfolder]: 28/596 cut-off events. [2021-08-13 17:57:18,934 INFO L130 PetriNetUnfolder]: For 5499/7733 co-relation queries the response was YES. [2021-08-13 17:57:18,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 596 events. 28/596 cut-off events. For 5499/7733 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6198 event pairs, 0 based on Foata normal form. 54/636 useless extension candidates. Maximal degree in co-relation 2836. Up to 133 conditions per place. [2021-08-13 17:57:18,938 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 145 selfloop transitions, 56 changer transitions 26/242 dead transitions. [2021-08-13 17:57:18,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 242 transitions, 5524 flow [2021-08-13 17:57:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:18,940 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:18,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:18,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:18,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:18,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,942 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:18,942 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2021-08-13 17:57:18,942 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 242 transitions, 5524 flow [2021-08-13 17:57:18,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:18,943 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:18,943 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:18,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:57:18,943 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash 108333204, now seen corresponding path program 12 times [2021-08-13 17:57:18,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:18,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453048287] [2021-08-13 17:57:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:18,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:18,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:18,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:18,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:18,974 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:18,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:18,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:18,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:19,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:19,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:19,029 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 17:57:19,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:19,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453048287] [2021-08-13 17:57:19,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453048287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:19,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:19,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:19,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990587014] [2021-08-13 17:57:19,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:19,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:19,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:19,031 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:19,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 242 transitions, 5524 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:19,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:19,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:19,171 INFO L129 PetriNetUnfolder]: 28/600 cut-off events. [2021-08-13 17:57:19,171 INFO L130 PetriNetUnfolder]: For 6259/8589 co-relation queries the response was YES. [2021-08-13 17:57:19,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 600 events. 28/600 cut-off events. For 6259/8589 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6229 event pairs, 0 based on Foata normal form. 54/638 useless extension candidates. Maximal degree in co-relation 3037. Up to 132 conditions per place. [2021-08-13 17:57:19,176 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 140 selfloop transitions, 58 changer transitions 28/241 dead transitions. [2021-08-13 17:57:19,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 241 transitions, 5952 flow [2021-08-13 17:57:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:19,177 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:19,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:19,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:19,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,179 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 80 predicate places. [2021-08-13 17:57:19,180 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 241 transitions, 5952 flow [2021-08-13 17:57:19,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,180 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:19,180 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:19,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 17:57:19,180 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1693422334, now seen corresponding path program 13 times [2021-08-13 17:57:19,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:19,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583506764] [2021-08-13 17:57:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:19,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:19,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:19,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:19,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:19,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:19,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:19,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:19,278 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:19,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:19,297 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 17:57:19,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:19,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583506764] [2021-08-13 17:57:19,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583506764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:19,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:19,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:19,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970433003] [2021-08-13 17:57:19,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:19,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:19,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:19,299 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:19,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 241 transitions, 5952 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:19,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:19,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:19,437 INFO L129 PetriNetUnfolder]: 27/607 cut-off events. [2021-08-13 17:57:19,438 INFO L130 PetriNetUnfolder]: For 7442/9976 co-relation queries the response was YES. [2021-08-13 17:57:19,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 607 events. 27/607 cut-off events. For 7442/9976 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6344 event pairs, 0 based on Foata normal form. 48/639 useless extension candidates. Maximal degree in co-relation 3248. Up to 133 conditions per place. [2021-08-13 17:57:19,442 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 53 changer transitions 31/242 dead transitions. [2021-08-13 17:57:19,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 242 transitions, 6432 flow [2021-08-13 17:57:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:19,443 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:19,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:19,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:19,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,445 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,445 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 86 predicate places. [2021-08-13 17:57:19,445 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 242 transitions, 6432 flow [2021-08-13 17:57:19,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,446 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:19,446 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:19,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 17:57:19,446 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash -473242778, now seen corresponding path program 14 times [2021-08-13 17:57:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:19,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418152898] [2021-08-13 17:57:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:19,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:19,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:19,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:19,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:19,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:19,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:19,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:19,513 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:19,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:19,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:19,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418152898] [2021-08-13 17:57:19,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418152898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:19,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:19,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:19,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524474160] [2021-08-13 17:57:19,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:19,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:19,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:19,536 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:19,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 242 transitions, 6432 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:19,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:19,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:19,660 INFO L129 PetriNetUnfolder]: 27/601 cut-off events. [2021-08-13 17:57:19,661 INFO L130 PetriNetUnfolder]: For 6946/8127 co-relation queries the response was YES. [2021-08-13 17:57:19,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 601 events. 27/601 cut-off events. For 6946/8127 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6290 event pairs, 0 based on Foata normal form. 27/614 useless extension candidates. Maximal degree in co-relation 3420. Up to 132 conditions per place. [2021-08-13 17:57:19,665 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 56 changer transitions 34/241 dead transitions. [2021-08-13 17:57:19,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 241 transitions, 6856 flow [2021-08-13 17:57:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:19,667 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:19,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:19,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:19,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,669 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 92 predicate places. [2021-08-13 17:57:19,669 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 241 transitions, 6856 flow [2021-08-13 17:57:19,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,669 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:19,669 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:19,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 17:57:19,669 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash 563802946, now seen corresponding path program 15 times [2021-08-13 17:57:19,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:19,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703900724] [2021-08-13 17:57:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:19,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:19,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:19,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:19,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:19,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:19,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:19,733 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:19,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:19,751 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 17:57:19,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:19,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703900724] [2021-08-13 17:57:19,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703900724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:19,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:19,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:19,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543548225] [2021-08-13 17:57:19,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:19,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:19,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:19,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:19,753 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:19,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 241 transitions, 6856 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:19,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:19,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:19,919 INFO L129 PetriNetUnfolder]: 21/653 cut-off events. [2021-08-13 17:57:19,919 INFO L130 PetriNetUnfolder]: For 8608/9871 co-relation queries the response was YES. [2021-08-13 17:57:19,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4733 conditions, 653 events. 21/653 cut-off events. For 8608/9871 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7017 event pairs, 0 based on Foata normal form. 25/661 useless extension candidates. Maximal degree in co-relation 3789. Up to 140 conditions per place. [2021-08-13 17:57:19,923 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 148 selfloop transitions, 55 changer transitions 36/254 dead transitions. [2021-08-13 17:57:19,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 254 transitions, 7724 flow [2021-08-13 17:57:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:19,925 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:19,925 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:19,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:19,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:19,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:19,927 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 98 predicate places. [2021-08-13 17:57:19,927 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 254 transitions, 7724 flow [2021-08-13 17:57:19,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:19,927 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:19,927 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:19,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 17:57:19,927 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1626460848, now seen corresponding path program 16 times [2021-08-13 17:57:19,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:19,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713917277] [2021-08-13 17:57:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:19,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:19,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:19,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:19,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:19,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:19,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:19,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:19,989 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:19,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:20,007 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 17:57:20,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:20,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713917277] [2021-08-13 17:57:20,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713917277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:20,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:20,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:20,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210566016] [2021-08-13 17:57:20,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:20,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:20,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:20,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:20,009 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:20,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 254 transitions, 7724 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:20,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:20,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:20,153 INFO L129 PetriNetUnfolder]: 21/651 cut-off events. [2021-08-13 17:57:20,154 INFO L130 PetriNetUnfolder]: For 11693/14691 co-relation queries the response was YES. [2021-08-13 17:57:20,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 651 events. 21/651 cut-off events. For 11693/14691 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7010 event pairs, 0 based on Foata normal form. 46/682 useless extension candidates. Maximal degree in co-relation 3980. Up to 139 conditions per place. [2021-08-13 17:57:20,158 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 145 selfloop transitions, 53 changer transitions 40/253 dead transitions. [2021-08-13 17:57:20,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 253 transitions, 8168 flow [2021-08-13 17:57:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:20,160 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:20,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:20,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:20,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,161 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,161 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 104 predicate places. [2021-08-13 17:57:20,162 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 253 transitions, 8168 flow [2021-08-13 17:57:20,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,162 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:20,162 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:20,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 17:57:20,162 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1043826396, now seen corresponding path program 17 times [2021-08-13 17:57:20,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:20,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850617096] [2021-08-13 17:57:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:20,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:20,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:20,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:20,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:20,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:20,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:20,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:20,232 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:20,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:20,250 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 17:57:20,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:20,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850617096] [2021-08-13 17:57:20,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850617096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:20,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:20,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:20,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953826423] [2021-08-13 17:57:20,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:20,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:20,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:20,252 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:20,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 253 transitions, 8168 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:20,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:20,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:20,398 INFO L129 PetriNetUnfolder]: 21/651 cut-off events. [2021-08-13 17:57:20,398 INFO L130 PetriNetUnfolder]: For 12381/14727 co-relation queries the response was YES. [2021-08-13 17:57:20,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5177 conditions, 651 events. 21/651 cut-off events. For 12381/14727 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7022 event pairs, 0 based on Foata normal form. 23/657 useless extension candidates. Maximal degree in co-relation 4177. Up to 138 conditions per place. [2021-08-13 17:57:20,403 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 139 selfloop transitions, 56 changer transitions 42/252 dead transitions. [2021-08-13 17:57:20,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 252 transitions, 8608 flow [2021-08-13 17:57:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:20,404 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:20,404 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:20,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:20,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,406 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 110 predicate places. [2021-08-13 17:57:20,406 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 252 transitions, 8608 flow [2021-08-13 17:57:20,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,406 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:20,407 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:20,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 17:57:20,407 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1807180214, now seen corresponding path program 18 times [2021-08-13 17:57:20,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:20,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243479447] [2021-08-13 17:57:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:20,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:20,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:20,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:20,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:20,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:20,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:20,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:20,499 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:20,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:20,518 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 17:57:20,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:20,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243479447] [2021-08-13 17:57:20,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243479447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:20,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:20,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:20,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117715623] [2021-08-13 17:57:20,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:20,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:20,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:20,521 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:20,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 252 transitions, 8608 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:20,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:20,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:20,692 INFO L129 PetriNetUnfolder]: 17/687 cut-off events. [2021-08-13 17:57:20,693 INFO L130 PetriNetUnfolder]: For 14667/17263 co-relation queries the response was YES. [2021-08-13 17:57:20,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 687 events. 17/687 cut-off events. For 14667/17263 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7559 event pairs, 0 based on Foata normal form. 23/693 useless extension candidates. Maximal degree in co-relation 4528. Up to 144 conditions per place. [2021-08-13 17:57:20,697 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 151 selfloop transitions, 52 changer transitions 44/262 dead transitions. [2021-08-13 17:57:20,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 262 transitions, 9462 flow [2021-08-13 17:57:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:20,698 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:20,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:20,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:20,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,700 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 116 predicate places. [2021-08-13 17:57:20,700 INFO L482 AbstractCegarLoop]: Abstraction has has 153 places, 262 transitions, 9462 flow [2021-08-13 17:57:20,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,700 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:20,701 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:20,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 17:57:20,701 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2038710518, now seen corresponding path program 19 times [2021-08-13 17:57:20,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:20,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181196306] [2021-08-13 17:57:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:20,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:20,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:20,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:20,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:20,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:20,749 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:20,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:20,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:20,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:20,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:20,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181196306] [2021-08-13 17:57:20,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181196306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:20,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:20,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:20,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098065951] [2021-08-13 17:57:20,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:20,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:20,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:20,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:20,793 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:20,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 262 transitions, 9462 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:20,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:20,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:20,946 INFO L129 PetriNetUnfolder]: 17/686 cut-off events. [2021-08-13 17:57:20,946 INFO L130 PetriNetUnfolder]: For 16375/19732 co-relation queries the response was YES. [2021-08-13 17:57:20,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 686 events. 17/686 cut-off events. For 16375/19732 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7534 event pairs, 0 based on Foata normal form. 22/692 useless extension candidates. Maximal degree in co-relation 4728. Up to 143 conditions per place. [2021-08-13 17:57:20,950 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 57 changer transitions 46/261 dead transitions. [2021-08-13 17:57:20,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 261 transitions, 9916 flow [2021-08-13 17:57:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:20,951 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:20,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:20,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:20,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:20,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:20,953 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 122 predicate places. [2021-08-13 17:57:20,953 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 261 transitions, 9916 flow [2021-08-13 17:57:20,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:20,953 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:20,953 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:20,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 17:57:20,954 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1328366334, now seen corresponding path program 20 times [2021-08-13 17:57:20,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:20,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244373855] [2021-08-13 17:57:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:20,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:20,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:20,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:20,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:20,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:20,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:20,999 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:20,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:21,018 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:21,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:21,036 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 17:57:21,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:21,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244373855] [2021-08-13 17:57:21,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244373855] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:21,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:21,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:21,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358552786] [2021-08-13 17:57:21,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:21,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:21,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:21,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:21,038 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:21,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 261 transitions, 9916 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:21,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:21,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:21,200 INFO L129 PetriNetUnfolder]: 17/685 cut-off events. [2021-08-13 17:57:21,200 INFO L130 PetriNetUnfolder]: For 15922/17769 co-relation queries the response was YES. [2021-08-13 17:57:21,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 685 events. 17/685 cut-off events. For 15922/17769 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7539 event pairs, 0 based on Foata normal form. 19/687 useless extension candidates. Maximal degree in co-relation 4928. Up to 142 conditions per place. [2021-08-13 17:57:21,204 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 146 selfloop transitions, 50 changer transitions 49/260 dead transitions. [2021-08-13 17:57:21,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 260 transitions, 10366 flow [2021-08-13 17:57:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:21,206 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:21,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:21,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:21,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,209 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 128 predicate places. [2021-08-13 17:57:21,209 INFO L482 AbstractCegarLoop]: Abstraction has has 165 places, 260 transitions, 10366 flow [2021-08-13 17:57:21,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,210 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:21,210 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:21,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 17:57:21,210 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 208459668, now seen corresponding path program 21 times [2021-08-13 17:57:21,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:21,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273683908] [2021-08-13 17:57:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:21,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:21,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:21,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:21,248 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:21,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:21,272 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:21,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:21,292 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:21,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:21,310 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 17:57:21,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:21,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273683908] [2021-08-13 17:57:21,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273683908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:21,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:21,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:21,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936922229] [2021-08-13 17:57:21,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:21,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:21,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:21,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:21,312 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:21,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 260 transitions, 10366 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:21,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:21,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:21,483 INFO L129 PetriNetUnfolder]: 17/684 cut-off events. [2021-08-13 17:57:21,483 INFO L130 PetriNetUnfolder]: For 17440/19409 co-relation queries the response was YES. [2021-08-13 17:57:21,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 684 events. 17/684 cut-off events. For 17440/19409 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7541 event pairs, 0 based on Foata normal form. 19/686 useless extension candidates. Maximal degree in co-relation 5128. Up to 141 conditions per place. [2021-08-13 17:57:21,486 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 138 selfloop transitions, 54 changer transitions 52/259 dead transitions. [2021-08-13 17:57:21,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 259 transitions, 10812 flow [2021-08-13 17:57:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:21,488 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:21,488 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:21,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:21,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,489 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 134 predicate places. [2021-08-13 17:57:21,489 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 259 transitions, 10812 flow [2021-08-13 17:57:21,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,490 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:21,490 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:21,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 17:57:21,490 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1043034882, now seen corresponding path program 22 times [2021-08-13 17:57:21,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:21,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615151636] [2021-08-13 17:57:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:21,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:21,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:21,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:21,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:21,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:21,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:21,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:21,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:21,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:21,572 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 17:57:21,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:21,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615151636] [2021-08-13 17:57:21,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615151636] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:21,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:21,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:21,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777222821] [2021-08-13 17:57:21,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:21,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:21,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:21,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:21,574 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:21,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 259 transitions, 10812 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:21,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:21,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:21,724 INFO L129 PetriNetUnfolder]: 17/683 cut-off events. [2021-08-13 17:57:21,725 INFO L130 PetriNetUnfolder]: For 22927/27242 co-relation queries the response was YES. [2021-08-13 17:57:21,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6563 conditions, 683 events. 17/683 cut-off events. For 22927/27242 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7500 event pairs, 0 based on Foata normal form. 24/690 useless extension candidates. Maximal degree in co-relation 5328. Up to 140 conditions per place. [2021-08-13 17:57:21,728 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 51 changer transitions 56/258 dead transitions. [2021-08-13 17:57:21,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 258 transitions, 11254 flow [2021-08-13 17:57:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:21,729 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:21,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:21,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:21,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,730 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 140 predicate places. [2021-08-13 17:57:21,730 INFO L482 AbstractCegarLoop]: Abstraction has has 177 places, 258 transitions, 11254 flow [2021-08-13 17:57:21,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,731 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:21,731 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:21,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 17:57:21,731 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:21,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1642598942, now seen corresponding path program 23 times [2021-08-13 17:57:21,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:21,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370729047] [2021-08-13 17:57:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:21,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:21,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:21,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:21,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:21,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:21,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:21,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:21,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:21,791 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:21,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:21,809 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 17:57:21,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:21,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370729047] [2021-08-13 17:57:21,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370729047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:21,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:21,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:21,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482933385] [2021-08-13 17:57:21,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:21,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:21,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:21,811 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:21,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 258 transitions, 11254 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:21,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:21,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:21,978 INFO L129 PetriNetUnfolder]: 17/682 cut-off events. [2021-08-13 17:57:21,978 INFO L130 PetriNetUnfolder]: For 24991/29540 co-relation queries the response was YES. [2021-08-13 17:57:21,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 682 events. 17/682 cut-off events. For 24991/29540 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7503 event pairs, 0 based on Foata normal form. 24/689 useless extension candidates. Maximal degree in co-relation 5528. Up to 139 conditions per place. [2021-08-13 17:57:21,982 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 133 selfloop transitions, 51 changer transitions 58/257 dead transitions. [2021-08-13 17:57:21,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 257 transitions, 11692 flow [2021-08-13 17:57:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:21,983 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:21,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:21,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:21,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:21,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:21,985 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 146 predicate places. [2021-08-13 17:57:21,985 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 257 transitions, 11692 flow [2021-08-13 17:57:21,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:21,985 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:21,985 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:21,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 17:57:21,985 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:21,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1748272184, now seen corresponding path program 24 times [2021-08-13 17:57:21,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:21,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899754167] [2021-08-13 17:57:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:22,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:22,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:22,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:22,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:22,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:22,055 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:22,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:22,072 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 17:57:22,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899754167] [2021-08-13 17:57:22,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899754167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:22,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866082996] [2021-08-13 17:57:22,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:22,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:22,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:22,082 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:22,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 257 transitions, 11692 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:22,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:22,281 INFO L129 PetriNetUnfolder]: 17/681 cut-off events. [2021-08-13 17:57:22,281 INFO L130 PetriNetUnfolder]: For 27129/31912 co-relation queries the response was YES. [2021-08-13 17:57:22,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 681 events. 17/681 cut-off events. For 27129/31912 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7478 event pairs, 0 based on Foata normal form. 24/688 useless extension candidates. Maximal degree in co-relation 5728. Up to 138 conditions per place. [2021-08-13 17:57:22,285 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 131 selfloop transitions, 50 changer transitions 60/256 dead transitions. [2021-08-13 17:57:22,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 12126 flow [2021-08-13 17:57:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:22,286 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:22,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:22,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:22,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,287 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 152 predicate places. [2021-08-13 17:57:22,287 INFO L482 AbstractCegarLoop]: Abstraction has has 189 places, 256 transitions, 12126 flow [2021-08-13 17:57:22,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,288 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,288 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:22,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 17:57:22,288 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash -902054038, now seen corresponding path program 25 times [2021-08-13 17:57:22,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742786951] [2021-08-13 17:57:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:22,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:22,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:22,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:22,333 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:22,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:22,351 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:22,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:22,369 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 17:57:22,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742786951] [2021-08-13 17:57:22,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742786951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173919448] [2021-08-13 17:57:22,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:22,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:22,370 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:22,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 256 transitions, 12126 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:22,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:22,567 INFO L129 PetriNetUnfolder]: 17/680 cut-off events. [2021-08-13 17:57:22,568 INFO L130 PetriNetUnfolder]: For 27688/32341 co-relation queries the response was YES. [2021-08-13 17:57:22,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 680 events. 17/680 cut-off events. For 27688/32341 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7462 event pairs, 0 based on Foata normal form. 22/686 useless extension candidates. Maximal degree in co-relation 5928. Up to 137 conditions per place. [2021-08-13 17:57:22,572 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 130 selfloop transitions, 47 changer transitions 63/255 dead transitions. [2021-08-13 17:57:22,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 255 transitions, 12556 flow [2021-08-13 17:57:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:22,585 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:22,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:22,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:22,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,587 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 158 predicate places. [2021-08-13 17:57:22,587 INFO L482 AbstractCegarLoop]: Abstraction has has 195 places, 255 transitions, 12556 flow [2021-08-13 17:57:22,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,588 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,588 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:22,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 17:57:22,588 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,588 INFO L82 PathProgramCache]: Analyzing trace with hash -965868364, now seen corresponding path program 26 times [2021-08-13 17:57:22,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957810743] [2021-08-13 17:57:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:22,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:22,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:22,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:22,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:22,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:22,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:22,691 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 17:57:22,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957810743] [2021-08-13 17:57:22,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957810743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:22,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944366012] [2021-08-13 17:57:22,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:22,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:22,693 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:22,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 255 transitions, 12556 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:22,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:22,870 INFO L129 PetriNetUnfolder]: 17/679 cut-off events. [2021-08-13 17:57:22,870 INFO L130 PetriNetUnfolder]: For 29801/34670 co-relation queries the response was YES. [2021-08-13 17:57:22,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 679 events. 17/679 cut-off events. For 29801/34670 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7441 event pairs, 0 based on Foata normal form. 22/685 useless extension candidates. Maximal degree in co-relation 6128. Up to 136 conditions per place. [2021-08-13 17:57:22,874 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 127 selfloop transitions, 47 changer transitions 65/254 dead transitions. [2021-08-13 17:57:22,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 254 transitions, 12982 flow [2021-08-13 17:57:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:22,876 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:22,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:22,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:22,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:22,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:22,881 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 164 predicate places. [2021-08-13 17:57:22,881 INFO L482 AbstractCegarLoop]: Abstraction has has 201 places, 254 transitions, 12982 flow [2021-08-13 17:57:22,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,881 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:22,881 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:22,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 17:57:22,881 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1895028182, now seen corresponding path program 27 times [2021-08-13 17:57:22,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:22,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413920922] [2021-08-13 17:57:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:22,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:22,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:22,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:22,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:22,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:22,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:22,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:22,956 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:22,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:22,973 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 17:57:22,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:22,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413920922] [2021-08-13 17:57:22,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413920922] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:22,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:22,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:22,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744678867] [2021-08-13 17:57:22,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:22,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:22,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:22,976 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:22,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 254 transitions, 12982 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:22,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:22,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:22,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,171 INFO L129 PetriNetUnfolder]: 17/678 cut-off events. [2021-08-13 17:57:23,171 INFO L130 PetriNetUnfolder]: For 33957/39442 co-relation queries the response was YES. [2021-08-13 17:57:23,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 678 events. 17/678 cut-off events. For 33957/39442 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7441 event pairs, 0 based on Foata normal form. 24/685 useless extension candidates. Maximal degree in co-relation 6328. Up to 135 conditions per place. [2021-08-13 17:57:23,175 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 46 changer transitions 68/253 dead transitions. [2021-08-13 17:57:23,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 253 transitions, 13404 flow [2021-08-13 17:57:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:23,176 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:23,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:23,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,178 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 170 predicate places. [2021-08-13 17:57:23,178 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 253 transitions, 13404 flow [2021-08-13 17:57:23,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,178 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,178 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:23,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 17:57:23,178 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1755250882, now seen corresponding path program 28 times [2021-08-13 17:57:23,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425041075] [2021-08-13 17:57:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:23,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:23,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:23,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:23,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:23,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:23,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:23,253 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 17:57:23,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425041075] [2021-08-13 17:57:23,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425041075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:23,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856087414] [2021-08-13 17:57:23,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:23,255 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:23,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 253 transitions, 13404 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:23,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,428 INFO L129 PetriNetUnfolder]: 17/677 cut-off events. [2021-08-13 17:57:23,428 INFO L130 PetriNetUnfolder]: For 36361/42080 co-relation queries the response was YES. [2021-08-13 17:57:23,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 677 events. 17/677 cut-off events. For 36361/42080 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7430 event pairs, 0 based on Foata normal form. 24/684 useless extension candidates. Maximal degree in co-relation 6528. Up to 134 conditions per place. [2021-08-13 17:57:23,432 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 42 changer transitions 73/252 dead transitions. [2021-08-13 17:57:23,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 252 transitions, 13822 flow [2021-08-13 17:57:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:23,433 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:23,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:23,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,435 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,435 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 176 predicate places. [2021-08-13 17:57:23,435 INFO L482 AbstractCegarLoop]: Abstraction has has 213 places, 252 transitions, 13822 flow [2021-08-13 17:57:23,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,435 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,436 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:23,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 17:57:23,436 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,436 INFO L82 PathProgramCache]: Analyzing trace with hash 509883668, now seen corresponding path program 29 times [2021-08-13 17:57:23,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60491307] [2021-08-13 17:57:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,457 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:23,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:23,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:23,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:23,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:23,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:23,498 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:23,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:23,517 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 17:57:23,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60491307] [2021-08-13 17:57:23,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60491307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:23,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858960204] [2021-08-13 17:57:23,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:23,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:23,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:23,519 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:23,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 252 transitions, 13822 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:23,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:23,719 INFO L129 PetriNetUnfolder]: 17/676 cut-off events. [2021-08-13 17:57:23,719 INFO L130 PetriNetUnfolder]: For 38824/44777 co-relation queries the response was YES. [2021-08-13 17:57:23,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 676 events. 17/676 cut-off events. For 38824/44777 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7403 event pairs, 0 based on Foata normal form. 41/700 useless extension candidates. Maximal degree in co-relation 6728. Up to 134 conditions per place. [2021-08-13 17:57:23,724 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 49 changer transitions 76/251 dead transitions. [2021-08-13 17:57:23,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 251 transitions, 14236 flow [2021-08-13 17:57:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:23,725 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:23,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:23,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:23,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:23,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:23,733 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 182 predicate places. [2021-08-13 17:57:23,733 INFO L482 AbstractCegarLoop]: Abstraction has has 219 places, 251 transitions, 14236 flow [2021-08-13 17:57:23,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,734 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:23,734 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:23,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 17:57:23,734 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:23,734 INFO L82 PathProgramCache]: Analyzing trace with hash -727827062, now seen corresponding path program 30 times [2021-08-13 17:57:23,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:23,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365551874] [2021-08-13 17:57:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:23,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:23,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:23,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:23,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:23,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:23,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:23,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:23,779 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:23,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:23,800 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:23,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:23,862 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 17:57:23,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:23,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365551874] [2021-08-13 17:57:23,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365551874] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:23,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:23,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:23,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920845264] [2021-08-13 17:57:23,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:23,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:23,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:23,865 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:23,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 251 transitions, 14236 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:23,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:23,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:23,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,113 INFO L129 PetriNetUnfolder]: 17/675 cut-off events. [2021-08-13 17:57:24,114 INFO L130 PetriNetUnfolder]: For 26243/27896 co-relation queries the response was YES. [2021-08-13 17:57:24,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 675 events. 17/675 cut-off events. For 26243/27896 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7396 event pairs, 0 based on Foata normal form. 30/688 useless extension candidates. Maximal degree in co-relation 6928. Up to 134 conditions per place. [2021-08-13 17:57:24,118 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 109 selfloop transitions, 48 changer transitions 78/250 dead transitions. [2021-08-13 17:57:24,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 250 transitions, 14646 flow [2021-08-13 17:57:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:24,121 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:24,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:24,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,123 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 188 predicate places. [2021-08-13 17:57:24,123 INFO L482 AbstractCegarLoop]: Abstraction has has 225 places, 250 transitions, 14646 flow [2021-08-13 17:57:24,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,123 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,123 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:24,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 17:57:24,124 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1335662894, now seen corresponding path program 31 times [2021-08-13 17:57:24,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598498561] [2021-08-13 17:57:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,146 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:24,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:24,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:24,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:24,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:24,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:24,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:24,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:24,209 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 17:57:24,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598498561] [2021-08-13 17:57:24,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598498561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:24,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464879516] [2021-08-13 17:57:24,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:24,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:24,211 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:24,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 250 transitions, 14646 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:24,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,401 INFO L129 PetriNetUnfolder]: 17/674 cut-off events. [2021-08-13 17:57:24,401 INFO L130 PetriNetUnfolder]: For 27604/29339 co-relation queries the response was YES. [2021-08-13 17:57:24,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8471 conditions, 674 events. 17/674 cut-off events. For 27604/29339 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7388 event pairs, 0 based on Foata normal form. 30/687 useless extension candidates. Maximal degree in co-relation 7128. Up to 134 conditions per place. [2021-08-13 17:57:24,405 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 106 selfloop transitions, 47 changer transitions 81/249 dead transitions. [2021-08-13 17:57:24,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 249 transitions, 15052 flow [2021-08-13 17:57:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:24,406 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:24,406 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:24,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,408 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 194 predicate places. [2021-08-13 17:57:24,408 INFO L482 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 15052 flow [2021-08-13 17:57:24,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,409 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,409 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:24,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 17:57:24,409 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash 826935466, now seen corresponding path program 32 times [2021-08-13 17:57:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351564894] [2021-08-13 17:57:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:24,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:24,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:24,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:24,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:24,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:24,482 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:24,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:24,501 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 17:57:24,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351564894] [2021-08-13 17:57:24,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351564894] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:24,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800316891] [2021-08-13 17:57:24,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:24,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:24,506 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:24,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 15052 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:24,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,686 INFO L129 PetriNetUnfolder]: 17/673 cut-off events. [2021-08-13 17:57:24,686 INFO L130 PetriNetUnfolder]: For 32789/36306 co-relation queries the response was YES. [2021-08-13 17:57:24,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 673 events. 17/673 cut-off events. For 32789/36306 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7386 event pairs, 0 based on Foata normal form. 32/689 useless extension candidates. Maximal degree in co-relation 7328. Up to 134 conditions per place. [2021-08-13 17:57:24,689 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 104 selfloop transitions, 46 changer transitions 83/248 dead transitions. [2021-08-13 17:57:24,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 248 transitions, 15454 flow [2021-08-13 17:57:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:24,691 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:24,691 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:24,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,692 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,693 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 200 predicate places. [2021-08-13 17:57:24,693 INFO L482 AbstractCegarLoop]: Abstraction has has 237 places, 248 transitions, 15454 flow [2021-08-13 17:57:24,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,693 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,693 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:24,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 17:57:24,693 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1823392822, now seen corresponding path program 33 times [2021-08-13 17:57:24,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041079774] [2021-08-13 17:57:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:24,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:24,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:24,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:24,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:24,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:24,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:24,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:24,751 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:24,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:24,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:24,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:24,789 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 17:57:24,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:24,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041079774] [2021-08-13 17:57:24,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041079774] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:24,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:24,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:24,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333638292] [2021-08-13 17:57:24,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:24,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:24,792 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:24,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 248 transitions, 15454 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:24,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:24,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:24,978 INFO L129 PetriNetUnfolder]: 16/748 cut-off events. [2021-08-13 17:57:24,978 INFO L130 PetriNetUnfolder]: For 38592/42307 co-relation queries the response was YES. [2021-08-13 17:57:24,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 748 events. 16/748 cut-off events. For 38592/42307 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8487 event pairs, 0 based on Foata normal form. 32/762 useless extension candidates. Maximal degree in co-relation 8228. Up to 142 conditions per place. [2021-08-13 17:57:24,982 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 119 selfloop transitions, 53 changer transitions 85/272 dead transitions. [2021-08-13 17:57:24,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 272 transitions, 17552 flow [2021-08-13 17:57:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:24,984 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:24,984 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:24,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:24,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:24,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:24,985 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 206 predicate places. [2021-08-13 17:57:24,985 INFO L482 AbstractCegarLoop]: Abstraction has has 243 places, 272 transitions, 17552 flow [2021-08-13 17:57:24,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:24,986 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:24,986 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:24,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 17:57:24,986 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:24,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:24,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1020572466, now seen corresponding path program 34 times [2021-08-13 17:57:24,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:24,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441725801] [2021-08-13 17:57:24,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:25,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:25,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:25,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:25,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:25,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:25,055 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:25,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:25,077 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 17:57:25,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:25,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441725801] [2021-08-13 17:57:25,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441725801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:25,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:25,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:25,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416207631] [2021-08-13 17:57:25,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:25,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:25,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:25,081 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:25,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 272 transitions, 17552 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:25,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:25,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,322 INFO L129 PetriNetUnfolder]: 16/747 cut-off events. [2021-08-13 17:57:25,322 INFO L130 PetriNetUnfolder]: For 40107/43977 co-relation queries the response was YES. [2021-08-13 17:57:25,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 747 events. 16/747 cut-off events. For 40107/43977 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8445 event pairs, 0 based on Foata normal form. 45/774 useless extension candidates. Maximal degree in co-relation 8446. Up to 141 conditions per place. [2021-08-13 17:57:25,326 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 116 selfloop transitions, 51 changer transitions 89/271 dead transitions. [2021-08-13 17:57:25,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 271 transitions, 17996 flow [2021-08-13 17:57:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:25,328 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:25,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:25,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,330 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 212 predicate places. [2021-08-13 17:57:25,330 INFO L482 AbstractCegarLoop]: Abstraction has has 249 places, 271 transitions, 17996 flow [2021-08-13 17:57:25,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,330 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,330 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:25,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 17:57:25,330 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1617470204, now seen corresponding path program 35 times [2021-08-13 17:57:25,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326308059] [2021-08-13 17:57:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:25,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:25,367 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:25,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:25,381 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:25,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:25,400 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:25,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:25,420 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 17:57:25,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:25,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326308059] [2021-08-13 17:57:25,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326308059] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:25,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:25,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:25,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232652108] [2021-08-13 17:57:25,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:25,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:25,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:25,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:25,422 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:25,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 271 transitions, 17996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:25,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:25,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,609 INFO L129 PetriNetUnfolder]: 16/746 cut-off events. [2021-08-13 17:57:25,609 INFO L130 PetriNetUnfolder]: For 41169/44995 co-relation queries the response was YES. [2021-08-13 17:57:25,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 746 events. 16/746 cut-off events. For 41169/44995 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8431 event pairs, 0 based on Foata normal form. 38/767 useless extension candidates. Maximal degree in co-relation 8664. Up to 140 conditions per place. [2021-08-13 17:57:25,612 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 113 selfloop transitions, 51 changer transitions 91/270 dead transitions. [2021-08-13 17:57:25,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 270 transitions, 18436 flow [2021-08-13 17:57:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:25,614 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:25,614 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:25,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,616 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 218 predicate places. [2021-08-13 17:57:25,616 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 270 transitions, 18436 flow [2021-08-13 17:57:25,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,616 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,616 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:25,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 17:57:25,616 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash 335256220, now seen corresponding path program 36 times [2021-08-13 17:57:25,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659610616] [2021-08-13 17:57:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:25,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:25,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:25,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:25,667 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:25,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:25,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:25,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:25,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:25,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659610616] [2021-08-13 17:57:25,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659610616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:25,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:25,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:25,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219234937] [2021-08-13 17:57:25,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:25,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:25,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:25,710 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:25,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 270 transitions, 18436 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:25,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:25,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:25,905 INFO L129 PetriNetUnfolder]: 16/745 cut-off events. [2021-08-13 17:57:25,906 INFO L130 PetriNetUnfolder]: For 38580/40678 co-relation queries the response was YES. [2021-08-13 17:57:25,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10495 conditions, 745 events. 16/745 cut-off events. For 38580/40678 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8439 event pairs, 0 based on Foata normal form. 28/755 useless extension candidates. Maximal degree in co-relation 8882. Up to 139 conditions per place. [2021-08-13 17:57:25,909 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 49 changer transitions 94/269 dead transitions. [2021-08-13 17:57:25,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 269 transitions, 18872 flow [2021-08-13 17:57:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:25,911 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:25,911 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:25,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:25,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:25,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:25,913 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 224 predicate places. [2021-08-13 17:57:25,913 INFO L482 AbstractCegarLoop]: Abstraction has has 261 places, 269 transitions, 18872 flow [2021-08-13 17:57:25,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:25,913 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:25,913 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:25,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 17:57:25,913 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:25,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1904007400, now seen corresponding path program 37 times [2021-08-13 17:57:25,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:25,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376567102] [2021-08-13 17:57:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:25,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:25,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:25,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:25,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:25,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:25,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:25,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:25,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:25,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:25,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:25,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:26,005 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 17:57:26,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376567102] [2021-08-13 17:57:26,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376567102] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:26,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610374359] [2021-08-13 17:57:26,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:26,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:26,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:26,007 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:26,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 269 transitions, 18872 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:26,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:26,245 INFO L129 PetriNetUnfolder]: 15/753 cut-off events. [2021-08-13 17:57:26,245 INFO L130 PetriNetUnfolder]: For 40918/43118 co-relation queries the response was YES. [2021-08-13 17:57:26,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 753 events. 15/753 cut-off events. For 40918/43118 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8572 event pairs, 0 based on Foata normal form. 28/763 useless extension candidates. Maximal degree in co-relation 9151. Up to 139 conditions per place. [2021-08-13 17:57:26,248 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 47 changer transitions 97/270 dead transitions. [2021-08-13 17:57:26,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 270 transitions, 19456 flow [2021-08-13 17:57:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:26,258 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:26,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:26,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:26,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:26,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:26,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:26,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,259 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,259 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 230 predicate places. [2021-08-13 17:57:26,260 INFO L482 AbstractCegarLoop]: Abstraction has has 267 places, 270 transitions, 19456 flow [2021-08-13 17:57:26,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,260 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:26,260 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:26,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 17:57:26,260 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:26,260 INFO L82 PathProgramCache]: Analyzing trace with hash 937191624, now seen corresponding path program 38 times [2021-08-13 17:57:26,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:26,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550584989] [2021-08-13 17:57:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:26,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:26,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:26,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:26,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:26,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:26,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:26,315 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:26,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:26,334 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:26,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:26,352 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 17:57:26,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550584989] [2021-08-13 17:57:26,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550584989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:26,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789661845] [2021-08-13 17:57:26,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:26,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:26,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:26,353 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:26,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 270 transitions, 19456 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:26,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:26,541 INFO L129 PetriNetUnfolder]: 13/782 cut-off events. [2021-08-13 17:57:26,541 INFO L130 PetriNetUnfolder]: For 51364/55909 co-relation queries the response was YES. [2021-08-13 17:57:26,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11382 conditions, 782 events. 13/782 cut-off events. For 51364/55909 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8988 event pairs, 0 based on Foata normal form. 42/806 useless extension candidates. Maximal degree in co-relation 9605. Up to 141 conditions per place. [2021-08-13 17:57:26,545 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 114 selfloop transitions, 49 changer transitions 99/277 dead transitions. [2021-08-13 17:57:26,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 20512 flow [2021-08-13 17:57:26,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:26,546 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:26,546 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:26,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:26,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,547 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,548 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 236 predicate places. [2021-08-13 17:57:26,548 INFO L482 AbstractCegarLoop]: Abstraction has has 273 places, 277 transitions, 20512 flow [2021-08-13 17:57:26,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,548 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:26,548 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:26,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 17:57:26,548 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:26,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1474059456, now seen corresponding path program 39 times [2021-08-13 17:57:26,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:26,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92954334] [2021-08-13 17:57:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:26,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:26,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:26,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:26,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:26,609 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:26,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:26,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:26,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:26,647 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:26,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:26,661 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 17:57:26,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92954334] [2021-08-13 17:57:26,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92954334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:26,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42604596] [2021-08-13 17:57:26,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:26,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:26,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:26,663 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:26,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 277 transitions, 20512 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:26,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:26,891 INFO L129 PetriNetUnfolder]: 13/781 cut-off events. [2021-08-13 17:57:26,891 INFO L130 PetriNetUnfolder]: For 53630/58357 co-relation queries the response was YES. [2021-08-13 17:57:26,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11605 conditions, 781 events. 13/781 cut-off events. For 53630/58357 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9010 event pairs, 0 based on Foata normal form. 42/805 useless extension candidates. Maximal degree in co-relation 9829. Up to 140 conditions per place. [2021-08-13 17:57:26,895 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 47 changer transitions 103/276 dead transitions. [2021-08-13 17:57:26,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 20956 flow [2021-08-13 17:57:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:26,897 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:26,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:26,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:26,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:26,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:26,899 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 242 predicate places. [2021-08-13 17:57:26,899 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 276 transitions, 20956 flow [2021-08-13 17:57:26,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,899 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:26,899 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:26,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 17:57:26,899 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash -831164100, now seen corresponding path program 40 times [2021-08-13 17:57:26,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:26,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498464601] [2021-08-13 17:57:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:26,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:26,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:26,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:26,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:26,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:26,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:26,941 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:26,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:26,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:26,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:26,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:26,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498464601] [2021-08-13 17:57:26,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498464601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:26,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:26,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:26,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959273279] [2021-08-13 17:57:26,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:26,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:26,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:26,982 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:26,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 276 transitions, 20956 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:26,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:26,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:26,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,230 INFO L129 PetriNetUnfolder]: 11/866 cut-off events. [2021-08-13 17:57:27,230 INFO L130 PetriNetUnfolder]: For 62266/67175 co-relation queries the response was YES. [2021-08-13 17:57:27,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13061 conditions, 866 events. 11/866 cut-off events. For 62266/67175 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10295 event pairs, 0 based on Foata normal form. 28/875 useless extension candidates. Maximal degree in co-relation 10936. Up to 152 conditions per place. [2021-08-13 17:57:27,234 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 56 changer transitions 105/302 dead transitions. [2021-08-13 17:57:27,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 302 transitions, 23610 flow [2021-08-13 17:57:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:27,235 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:27,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:27,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,237 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 248 predicate places. [2021-08-13 17:57:27,237 INFO L482 AbstractCegarLoop]: Abstraction has has 285 places, 302 transitions, 23610 flow [2021-08-13 17:57:27,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,237 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,237 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:27,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 17:57:27,237 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,237 INFO L82 PathProgramCache]: Analyzing trace with hash -978970892, now seen corresponding path program 41 times [2021-08-13 17:57:27,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615096449] [2021-08-13 17:57:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:27,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:27,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:27,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:27,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:27,300 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:27,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:27,318 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 17:57:27,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:27,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615096449] [2021-08-13 17:57:27,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615096449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:27,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:27,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042663603] [2021-08-13 17:57:27,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:27,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:27,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:27,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:27,319 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:27,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 302 transitions, 23610 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:27,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:27,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,544 INFO L129 PetriNetUnfolder]: 11/865 cut-off events. [2021-08-13 17:57:27,544 INFO L130 PetriNetUnfolder]: For 63199/68123 co-relation queries the response was YES. [2021-08-13 17:57:27,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13307 conditions, 865 events. 11/865 cut-off events. For 63199/68123 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10261 event pairs, 0 based on Foata normal form. 24/871 useless extension candidates. Maximal degree in co-relation 11179. Up to 151 conditions per place. [2021-08-13 17:57:27,547 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 123 selfloop transitions, 55 changer transitions 108/301 dead transitions. [2021-08-13 17:57:27,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 301 transitions, 24100 flow [2021-08-13 17:57:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:27,554 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:27,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:27,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,555 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 254 predicate places. [2021-08-13 17:57:27,555 INFO L482 AbstractCegarLoop]: Abstraction has has 291 places, 301 transitions, 24100 flow [2021-08-13 17:57:27,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,555 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,556 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:27,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 17:57:27,556 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1332942398, now seen corresponding path program 42 times [2021-08-13 17:57:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088303051] [2021-08-13 17:57:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:27,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:27,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:27,606 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:27,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:27,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:27,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:27,645 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 17:57:27,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:27,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088303051] [2021-08-13 17:57:27,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088303051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:27,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:27,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:27,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927583316] [2021-08-13 17:57:27,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:27,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:27,647 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:27,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 301 transitions, 24100 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:27,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:27,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:27,862 INFO L129 PetriNetUnfolder]: 11/864 cut-off events. [2021-08-13 17:57:27,863 INFO L130 PetriNetUnfolder]: For 65791/70943 co-relation queries the response was YES. [2021-08-13 17:57:27,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13551 conditions, 864 events. 11/864 cut-off events. For 65791/70943 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10224 event pairs, 0 based on Foata normal form. 24/870 useless extension candidates. Maximal degree in co-relation 11422. Up to 150 conditions per place. [2021-08-13 17:57:27,867 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 53 changer transitions 110/300 dead transitions. [2021-08-13 17:57:27,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 300 transitions, 24586 flow [2021-08-13 17:57:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:27,868 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:27,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:27,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:27,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:27,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:27,869 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 260 predicate places. [2021-08-13 17:57:27,869 INFO L482 AbstractCegarLoop]: Abstraction has has 297 places, 300 transitions, 24586 flow [2021-08-13 17:57:27,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,870 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:27,870 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:27,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 17:57:27,870 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:27,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1095649746, now seen corresponding path program 43 times [2021-08-13 17:57:27,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:27,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156572822] [2021-08-13 17:57:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:27,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:27,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:27,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:27,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:27,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:27,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:27,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:27,924 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:27,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:27,941 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 17:57:27,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:27,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156572822] [2021-08-13 17:57:27,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156572822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:27,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:27,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:27,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921979514] [2021-08-13 17:57:27,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:27,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:27,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:27,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:27,943 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:27,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 300 transitions, 24586 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:27,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:27,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:27,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:28,252 INFO L129 PetriNetUnfolder]: 9/893 cut-off events. [2021-08-13 17:57:28,252 INFO L130 PetriNetUnfolder]: For 73117/78812 co-relation queries the response was YES. [2021-08-13 17:57:28,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14194 conditions, 893 events. 9/893 cut-off events. For 73117/78812 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10734 event pairs, 0 based on Foata normal form. 28/902 useless extension candidates. Maximal degree in co-relation 11925. Up to 151 conditions per place. [2021-08-13 17:57:28,255 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 128 selfloop transitions, 52 changer transitions 112/307 dead transitions. [2021-08-13 17:57:28,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 307 transitions, 25772 flow [2021-08-13 17:57:28,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:28,256 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:28,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:28,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:28,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,258 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 266 predicate places. [2021-08-13 17:57:28,258 INFO L482 AbstractCegarLoop]: Abstraction has has 303 places, 307 transitions, 25772 flow [2021-08-13 17:57:28,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:28,258 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:28,258 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:28,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 17:57:28,259 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:28,259 INFO L82 PathProgramCache]: Analyzing trace with hash -155797948, now seen corresponding path program 44 times [2021-08-13 17:57:28,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:28,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481906806] [2021-08-13 17:57:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:28,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:28,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:28,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:28,287 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:28,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:28,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:28,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:28,330 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:28,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:28,349 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 17:57:28,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:28,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481906806] [2021-08-13 17:57:28,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481906806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:28,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:28,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:28,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13862806] [2021-08-13 17:57:28,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:28,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:28,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:28,351 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:28,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 307 transitions, 25772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:28,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:28,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:28,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:28,566 INFO L129 PetriNetUnfolder]: 9/892 cut-off events. [2021-08-13 17:57:28,566 INFO L130 PetriNetUnfolder]: For 76029/81966 co-relation queries the response was YES. [2021-08-13 17:57:28,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14442 conditions, 892 events. 9/892 cut-off events. For 76029/81966 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10725 event pairs, 0 based on Foata normal form. 28/901 useless extension candidates. Maximal degree in co-relation 12173. Up to 151 conditions per place. [2021-08-13 17:57:28,569 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 125 selfloop transitions, 51 changer transitions 115/306 dead transitions. [2021-08-13 17:57:28,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 306 transitions, 26266 flow [2021-08-13 17:57:28,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:28,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:28,575 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:28,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:28,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:28,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:28,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:28,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:28,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,577 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 272 predicate places. [2021-08-13 17:57:28,577 INFO L482 AbstractCegarLoop]: Abstraction has has 309 places, 306 transitions, 26266 flow [2021-08-13 17:57:28,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:28,577 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:28,577 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:28,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 17:57:28,577 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1536065498, now seen corresponding path program 45 times [2021-08-13 17:57:28,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:28,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502654843] [2021-08-13 17:57:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:28,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:28,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:28,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:28,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:28,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:28,633 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:28,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:28,652 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:28,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:28,672 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 17:57:28,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:28,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502654843] [2021-08-13 17:57:28,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502654843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:28,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:28,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:28,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78363628] [2021-08-13 17:57:28,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:28,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:28,674 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:28,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 306 transitions, 26266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:28,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:28,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:28,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:28,928 INFO L129 PetriNetUnfolder]: 9/891 cut-off events. [2021-08-13 17:57:28,928 INFO L130 PetriNetUnfolder]: For 78980/85159 co-relation queries the response was YES. [2021-08-13 17:57:28,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14688 conditions, 891 events. 9/891 cut-off events. For 78980/85159 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10677 event pairs, 0 based on Foata normal form. 28/900 useless extension candidates. Maximal degree in co-relation 12421. Up to 151 conditions per place. [2021-08-13 17:57:28,932 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 122 selfloop transitions, 49 changer transitions 119/305 dead transitions. [2021-08-13 17:57:28,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 305 transitions, 26756 flow [2021-08-13 17:57:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:28,934 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:28,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:28,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:28,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:28,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:28,936 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 278 predicate places. [2021-08-13 17:57:28,936 INFO L482 AbstractCegarLoop]: Abstraction has has 315 places, 305 transitions, 26756 flow [2021-08-13 17:57:28,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:28,936 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:28,936 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:28,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 17:57:28,936 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -643498132, now seen corresponding path program 46 times [2021-08-13 17:57:28,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:28,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134283310] [2021-08-13 17:57:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:28,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:28,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:28,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:28,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:28,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:28,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:28,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:28,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:28,997 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:28,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:29,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:29,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134283310] [2021-08-13 17:57:29,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134283310] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:29,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:29,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:29,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706761133] [2021-08-13 17:57:29,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:29,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:29,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:29,016 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:29,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 305 transitions, 26756 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:29,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:29,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,270 INFO L129 PetriNetUnfolder]: 5/1006 cut-off events. [2021-08-13 17:57:29,270 INFO L130 PetriNetUnfolder]: For 82870/86232 co-relation queries the response was YES. [2021-08-13 17:57:29,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16754 conditions, 1006 events. 5/1006 cut-off events. For 82870/86232 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12467 event pairs, 0 based on Foata normal form. 19/1005 useless extension candidates. Maximal degree in co-relation 13941. Up to 160 conditions per place. [2021-08-13 17:57:29,273 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 143 selfloop transitions, 60 changer transitions 121/339 dead transitions. [2021-08-13 17:57:29,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 339 transitions, 30532 flow [2021-08-13 17:57:29,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:29,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:29,274 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:29,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:29,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,276 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 284 predicate places. [2021-08-13 17:57:29,276 INFO L482 AbstractCegarLoop]: Abstraction has has 321 places, 339 transitions, 30532 flow [2021-08-13 17:57:29,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,276 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,276 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:29,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 17:57:29,276 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash 669219074, now seen corresponding path program 47 times [2021-08-13 17:57:29,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304463217] [2021-08-13 17:57:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:29,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:29,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:29,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:29,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:29,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:29,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:29,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:29,333 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:29,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:29,349 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 17:57:29,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:29,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304463217] [2021-08-13 17:57:29,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304463217] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:29,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:29,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:29,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422487024] [2021-08-13 17:57:29,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:29,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:29,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:29,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:29,351 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:29,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 339 transitions, 30532 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:29,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:29,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,564 INFO L129 PetriNetUnfolder]: 5/1005 cut-off events. [2021-08-13 17:57:29,564 INFO L130 PetriNetUnfolder]: For 85789/89289 co-relation queries the response was YES. [2021-08-13 17:57:29,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17031 conditions, 1005 events. 5/1005 cut-off events. For 85789/89289 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12489 event pairs, 0 based on Foata normal form. 19/1004 useless extension candidates. Maximal degree in co-relation 14213. Up to 160 conditions per place. [2021-08-13 17:57:29,567 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 142 selfloop transitions, 57 changer transitions 124/338 dead transitions. [2021-08-13 17:57:29,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 338 transitions, 31084 flow [2021-08-13 17:57:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:29,568 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:29,568 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:29,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,569 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,569 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 290 predicate places. [2021-08-13 17:57:29,569 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 338 transitions, 31084 flow [2021-08-13 17:57:29,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,569 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,569 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:29,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 17:57:29,570 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1895954224, now seen corresponding path program 48 times [2021-08-13 17:57:29,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505035512] [2021-08-13 17:57:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:29,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:29,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:29,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:29,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:29,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:29,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:29,634 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:29,655 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:29,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:29,728 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 17:57:29,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:29,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505035512] [2021-08-13 17:57:29,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505035512] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:29,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:29,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:29,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255802237] [2021-08-13 17:57:29,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:29,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:29,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:29,729 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:29,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 338 transitions, 31084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:29,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:29,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:29,984 INFO L129 PetriNetUnfolder]: 5/1004 cut-off events. [2021-08-13 17:57:29,984 INFO L130 PetriNetUnfolder]: For 84598/87765 co-relation queries the response was YES. [2021-08-13 17:57:29,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17306 conditions, 1004 events. 5/1004 cut-off events. For 84598/87765 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12441 event pairs, 0 based on Foata normal form. 15/1000 useless extension candidates. Maximal degree in co-relation 14485. Up to 159 conditions per place. [2021-08-13 17:57:29,988 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 139 selfloop transitions, 57 changer transitions 126/337 dead transitions. [2021-08-13 17:57:29,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 337 transitions, 31632 flow [2021-08-13 17:57:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:29,989 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:29,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:29,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:29,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:29,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,990 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:29,991 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 296 predicate places. [2021-08-13 17:57:29,991 INFO L482 AbstractCegarLoop]: Abstraction has has 333 places, 337 transitions, 31632 flow [2021-08-13 17:57:29,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:29,991 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:29,991 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:29,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 17:57:29,991 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:29,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1640814514, now seen corresponding path program 49 times [2021-08-13 17:57:29,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:29,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511306575] [2021-08-13 17:57:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:30,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:30,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:30,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:30,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:30,058 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:30,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:30,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511306575] [2021-08-13 17:57:30,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511306575] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:30,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937616062] [2021-08-13 17:57:30,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:30,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:30,079 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:30,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 337 transitions, 31632 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:30,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,298 INFO L129 PetriNetUnfolder]: 5/1003 cut-off events. [2021-08-13 17:57:30,298 INFO L130 PetriNetUnfolder]: For 104206/111656 co-relation queries the response was YES. [2021-08-13 17:57:30,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17579 conditions, 1003 events. 5/1003 cut-off events. For 104206/111656 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12453 event pairs, 0 based on Foata normal form. 24/1007 useless extension candidates. Maximal degree in co-relation 14757. Up to 159 conditions per place. [2021-08-13 17:57:30,301 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 137 selfloop transitions, 55 changer transitions 129/336 dead transitions. [2021-08-13 17:57:30,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 336 transitions, 32176 flow [2021-08-13 17:57:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:30,303 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:30,303 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:30,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,304 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,304 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 302 predicate places. [2021-08-13 17:57:30,304 INFO L482 AbstractCegarLoop]: Abstraction has has 339 places, 336 transitions, 32176 flow [2021-08-13 17:57:30,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,305 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,305 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:30,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 17:57:30,305 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2031527616, now seen corresponding path program 50 times [2021-08-13 17:57:30,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770153831] [2021-08-13 17:57:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:30,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:30,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:30,364 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:30,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:30,381 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 17:57:30,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770153831] [2021-08-13 17:57:30,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770153831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:30,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060649345] [2021-08-13 17:57:30,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:30,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:30,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:30,383 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:30,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 336 transitions, 32176 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:30,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,620 INFO L129 PetriNetUnfolder]: 5/1002 cut-off events. [2021-08-13 17:57:30,620 INFO L130 PetriNetUnfolder]: For 107877/115593 co-relation queries the response was YES. [2021-08-13 17:57:30,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17850 conditions, 1002 events. 5/1002 cut-off events. For 107877/115593 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12425 event pairs, 0 based on Foata normal form. 24/1006 useless extension candidates. Maximal degree in co-relation 15029. Up to 158 conditions per place. [2021-08-13 17:57:30,624 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 131 selfloop transitions, 58 changer transitions 131/335 dead transitions. [2021-08-13 17:57:30,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 335 transitions, 32716 flow [2021-08-13 17:57:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:30,625 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:30,625 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:30,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,626 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,626 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 308 predicate places. [2021-08-13 17:57:30,626 INFO L482 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 32716 flow [2021-08-13 17:57:30,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,626 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,626 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:30,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 17:57:30,626 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1403985420, now seen corresponding path program 51 times [2021-08-13 17:57:30,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544982365] [2021-08-13 17:57:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:30,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:30,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:30,679 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:30,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:30,707 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 17:57:30,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:30,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544982365] [2021-08-13 17:57:30,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544982365] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:30,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:30,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240482808] [2021-08-13 17:57:30,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:30,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:30,709 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:30,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 32716 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:30,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:30,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:30,957 INFO L129 PetriNetUnfolder]: 5/1001 cut-off events. [2021-08-13 17:57:30,957 INFO L130 PetriNetUnfolder]: For 92740/96267 co-relation queries the response was YES. [2021-08-13 17:57:30,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18119 conditions, 1001 events. 5/1001 cut-off events. For 92740/96267 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12417 event pairs, 0 based on Foata normal form. 15/997 useless extension candidates. Maximal degree in co-relation 15301. Up to 157 conditions per place. [2021-08-13 17:57:30,961 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 129 selfloop transitions, 54 changer transitions 136/334 dead transitions. [2021-08-13 17:57:30,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 334 transitions, 33252 flow [2021-08-13 17:57:30,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:30,962 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:30,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:30,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:30,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:30,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:30,964 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 314 predicate places. [2021-08-13 17:57:30,964 INFO L482 AbstractCegarLoop]: Abstraction has has 351 places, 334 transitions, 33252 flow [2021-08-13 17:57:30,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:30,964 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:30,964 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:30,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 17:57:30,964 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:30,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1954331202, now seen corresponding path program 52 times [2021-08-13 17:57:30,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:30,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262019246] [2021-08-13 17:57:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:30,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:30,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:30,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:30,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:30,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:30,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:30,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:31,021 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:31,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:31,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:31,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:31,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262019246] [2021-08-13 17:57:31,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262019246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:31,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136511237] [2021-08-13 17:57:31,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:31,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:31,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:31,055 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:31,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 334 transitions, 33252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:31,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:31,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,367 INFO L129 PetriNetUnfolder]: 5/1000 cut-off events. [2021-08-13 17:57:31,367 INFO L130 PetriNetUnfolder]: For 100594/104784 co-relation queries the response was YES. [2021-08-13 17:57:31,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18386 conditions, 1000 events. 5/1000 cut-off events. For 100594/104784 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12403 event pairs, 0 based on Foata normal form. 11/991 useless extension candidates. Maximal degree in co-relation 15573. Up to 157 conditions per place. [2021-08-13 17:57:31,370 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 119 selfloop transitions, 61 changer transitions 138/333 dead transitions. [2021-08-13 17:57:31,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 333 transitions, 33784 flow [2021-08-13 17:57:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:31,371 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:31,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:31,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:31,373 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:31,373 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 320 predicate places. [2021-08-13 17:57:31,373 INFO L482 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 33784 flow [2021-08-13 17:57:31,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:31,373 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,373 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 17:57:31,373 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash 124709360, now seen corresponding path program 53 times [2021-08-13 17:57:31,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39375972] [2021-08-13 17:57:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:31,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:31,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:31,404 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:31,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:31,416 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:31,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:31,435 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:31,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:31,452 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 17:57:31,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39375972] [2021-08-13 17:57:31,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39375972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:31,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551378281] [2021-08-13 17:57:31,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:31,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:31,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:31,453 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:31,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 33784 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:31,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:31,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:31,716 INFO L129 PetriNetUnfolder]: 5/999 cut-off events. [2021-08-13 17:57:31,716 INFO L130 PetriNetUnfolder]: For 96293/99448 co-relation queries the response was YES. [2021-08-13 17:57:31,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18651 conditions, 999 events. 5/999 cut-off events. For 96293/99448 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12398 event pairs, 0 based on Foata normal form. 9/988 useless extension candidates. Maximal degree in co-relation 15845. Up to 157 conditions per place. [2021-08-13 17:57:31,720 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 118 selfloop transitions, 59 changer transitions 140/332 dead transitions. [2021-08-13 17:57:31,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 332 transitions, 34312 flow [2021-08-13 17:57:31,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:31,721 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:31,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:31,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:31,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:31,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:31,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:31,722 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 326 predicate places. [2021-08-13 17:57:31,722 INFO L482 AbstractCegarLoop]: Abstraction has has 363 places, 332 transitions, 34312 flow [2021-08-13 17:57:31,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:31,722 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:31,722 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:31,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 17:57:31,722 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:31,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2016312754, now seen corresponding path program 54 times [2021-08-13 17:57:31,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:31,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702291904] [2021-08-13 17:57:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:31,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:31,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:31,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:31,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:31,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:31,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:31,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:31,766 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:31,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:31,785 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:31,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:31,801 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 17:57:31,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:31,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702291904] [2021-08-13 17:57:31,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702291904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:31,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:31,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:31,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814552832] [2021-08-13 17:57:31,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:31,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:31,803 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:31,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 332 transitions, 34312 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:31,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:31,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:31,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,043 INFO L129 PetriNetUnfolder]: 5/998 cut-off events. [2021-08-13 17:57:32,043 INFO L130 PetriNetUnfolder]: For 106639/112178 co-relation queries the response was YES. [2021-08-13 17:57:32,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18914 conditions, 998 events. 5/998 cut-off events. For 106639/112178 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12346 event pairs, 0 based on Foata normal form. 16/994 useless extension candidates. Maximal degree in co-relation 16117. Up to 157 conditions per place. [2021-08-13 17:57:32,047 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 117 selfloop transitions, 56 changer transitions 143/331 dead transitions. [2021-08-13 17:57:32,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 331 transitions, 34836 flow [2021-08-13 17:57:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:32,054 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:32,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:32,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,056 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 332 predicate places. [2021-08-13 17:57:32,056 INFO L482 AbstractCegarLoop]: Abstraction has has 369 places, 331 transitions, 34836 flow [2021-08-13 17:57:32,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,056 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,056 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 17:57:32,056 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2120664084, now seen corresponding path program 55 times [2021-08-13 17:57:32,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432540612] [2021-08-13 17:57:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:32,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:32,107 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:32,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:32,124 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:32,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:32,141 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 17:57:32,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432540612] [2021-08-13 17:57:32,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432540612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:32,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271095187] [2021-08-13 17:57:32,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:32,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:32,142 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:32,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 331 transitions, 34836 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:32,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,395 INFO L129 PetriNetUnfolder]: 4/1063 cut-off events. [2021-08-13 17:57:32,395 INFO L130 PetriNetUnfolder]: For 118590/124487 co-relation queries the response was YES. [2021-08-13 17:57:32,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20449 conditions, 1063 events. 4/1063 cut-off events. For 118590/124487 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13354 event pairs, 0 based on Foata normal form. 16/1059 useless extension candidates. Maximal degree in co-relation 17309. Up to 164 conditions per place. [2021-08-13 17:57:32,399 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 136 selfloop transitions, 55 changer transitions 145/351 dead transitions. [2021-08-13 17:57:32,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 351 transitions, 37708 flow [2021-08-13 17:57:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:32,401 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:32,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:32,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,402 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,402 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 338 predicate places. [2021-08-13 17:57:32,402 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 351 transitions, 37708 flow [2021-08-13 17:57:32,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,402 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,402 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 17:57:32,402 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash 237481876, now seen corresponding path program 56 times [2021-08-13 17:57:32,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928961602] [2021-08-13 17:57:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,419 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:32,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:32,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:32,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:32,552 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:32,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:32,571 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 17:57:32,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928961602] [2021-08-13 17:57:32,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928961602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:32,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517152210] [2021-08-13 17:57:32,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:32,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:32,572 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:32,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 351 transitions, 37708 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:32,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:32,856 INFO L129 PetriNetUnfolder]: 4/1062 cut-off events. [2021-08-13 17:57:32,856 INFO L130 PetriNetUnfolder]: For 121912/128167 co-relation queries the response was YES. [2021-08-13 17:57:32,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20729 conditions, 1062 events. 4/1062 cut-off events. For 121912/128167 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13350 event pairs, 0 based on Foata normal form. 16/1058 useless extension candidates. Maximal degree in co-relation 17596. Up to 164 conditions per place. [2021-08-13 17:57:32,861 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 63 changer transitions 148/350 dead transitions. [2021-08-13 17:57:32,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 350 transitions, 38266 flow [2021-08-13 17:57:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:32,862 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:32,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:32,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:32,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:32,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:32,863 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 344 predicate places. [2021-08-13 17:57:32,864 INFO L482 AbstractCegarLoop]: Abstraction has has 381 places, 350 transitions, 38266 flow [2021-08-13 17:57:32,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,864 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:32,864 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:32,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 17:57:32,864 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:32,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:32,864 INFO L82 PathProgramCache]: Analyzing trace with hash -806072770, now seen corresponding path program 57 times [2021-08-13 17:57:32,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:32,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292793649] [2021-08-13 17:57:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:32,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:32,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:32,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:32,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:32,902 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:32,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:32,921 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:32,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:32,938 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:32,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:32,954 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 17:57:32,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:32,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292793649] [2021-08-13 17:57:32,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292793649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:32,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:32,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:32,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769416949] [2021-08-13 17:57:32,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:32,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:32,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:32,955 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:32,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 350 transitions, 38266 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:32,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:32,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:32,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,247 INFO L129 PetriNetUnfolder]: 4/1061 cut-off events. [2021-08-13 17:57:33,248 INFO L130 PetriNetUnfolder]: For 120941/126783 co-relation queries the response was YES. [2021-08-13 17:57:33,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21007 conditions, 1061 events. 4/1061 cut-off events. For 120941/126783 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 13382 event pairs, 0 based on Foata normal form. 16/1058 useless extension candidates. Maximal degree in co-relation 17883. Up to 164 conditions per place. [2021-08-13 17:57:33,251 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 60 changer transitions 150/349 dead transitions. [2021-08-13 17:57:33,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 349 transitions, 38820 flow [2021-08-13 17:57:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:33,253 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:33,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:33,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:33,253 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:33,254 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 350 predicate places. [2021-08-13 17:57:33,254 INFO L482 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 38820 flow [2021-08-13 17:57:33,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:33,254 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,254 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:33,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 17:57:33,254 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1087078294, now seen corresponding path program 58 times [2021-08-13 17:57:33,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675876527] [2021-08-13 17:57:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:33,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:33,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:33,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:33,304 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:33,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:33,321 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:33,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:33,338 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 17:57:33,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675876527] [2021-08-13 17:57:33,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675876527] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:33,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763372868] [2021-08-13 17:57:33,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:33,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:33,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:33,339 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:33,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 38820 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:33,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:33,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:33,633 INFO L129 PetriNetUnfolder]: 3/1081 cut-off events. [2021-08-13 17:57:33,633 INFO L130 PetriNetUnfolder]: For 127400/133534 co-relation queries the response was YES. [2021-08-13 17:57:33,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21670 conditions, 1081 events. 3/1081 cut-off events. For 127400/133534 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13666 event pairs, 0 based on Foata normal form. 16/1078 useless extension candidates. Maximal degree in co-relation 18433. Up to 168 conditions per place. [2021-08-13 17:57:33,637 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 135 selfloop transitions, 52 changer transitions 152/354 dead transitions. [2021-08-13 17:57:33,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 354 transitions, 40078 flow [2021-08-13 17:57:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:33,638 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:33,638 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:33,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:33,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:33,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:33,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:33,639 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 356 predicate places. [2021-08-13 17:57:33,639 INFO L482 AbstractCegarLoop]: Abstraction has has 393 places, 354 transitions, 40078 flow [2021-08-13 17:57:33,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:33,639 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:33,639 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:33,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 17:57:33,639 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1377089538, now seen corresponding path program 59 times [2021-08-13 17:57:33,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:33,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659413531] [2021-08-13 17:57:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:33,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:33,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:33,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:33,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:33,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:33,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:33,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:33,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:33,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:33,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:33,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:33,715 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 17:57:33,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:33,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659413531] [2021-08-13 17:57:33,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659413531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:33,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:33,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:33,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146170143] [2021-08-13 17:57:33,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:33,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:33,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:33,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:33,717 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:33,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 354 transitions, 40078 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:33,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:33,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:33,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:34,155 INFO L129 PetriNetUnfolder]: 3/1080 cut-off events. [2021-08-13 17:57:34,156 INFO L130 PetriNetUnfolder]: For 135500/142829 co-relation queries the response was YES. [2021-08-13 17:57:34,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21950 conditions, 1080 events. 3/1080 cut-off events. For 135500/142829 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13646 event pairs, 0 based on Foata normal form. 16/1076 useless extension candidates. Maximal degree in co-relation 18724. Up to 167 conditions per place. [2021-08-13 17:57:34,160 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 134 selfloop transitions, 49 changer transitions 155/353 dead transitions. [2021-08-13 17:57:34,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 353 transitions, 40636 flow [2021-08-13 17:57:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:34,161 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:34,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:34,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:34,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:34,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:34,163 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 362 predicate places. [2021-08-13 17:57:34,164 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 353 transitions, 40636 flow [2021-08-13 17:57:34,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:34,164 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:34,164 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:34,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 17:57:34,164 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:34,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1477429910, now seen corresponding path program 60 times [2021-08-13 17:57:34,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:34,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695690629] [2021-08-13 17:57:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:34,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:34,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:34,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:34,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:34,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:34,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:34,229 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:34,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:34,248 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:34,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:34,265 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 17:57:34,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:34,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695690629] [2021-08-13 17:57:34,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695690629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:34,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:34,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:34,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410436770] [2021-08-13 17:57:34,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:34,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:34,268 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:34,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 353 transitions, 40636 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:34,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:34,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:34,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:34,630 INFO L129 PetriNetUnfolder]: 3/1079 cut-off events. [2021-08-13 17:57:34,630 INFO L130 PetriNetUnfolder]: For 139046/146733 co-relation queries the response was YES. [2021-08-13 17:57:34,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22228 conditions, 1079 events. 3/1079 cut-off events. For 139046/146733 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13623 event pairs, 0 based on Foata normal form. 16/1075 useless extension candidates. Maximal degree in co-relation 19015. Up to 166 conditions per place. [2021-08-13 17:57:34,635 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 53 changer transitions 158/352 dead transitions. [2021-08-13 17:57:34,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 352 transitions, 41190 flow [2021-08-13 17:57:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:34,637 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:34,637 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:34,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:34,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:34,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:34,641 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:34,641 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 368 predicate places. [2021-08-13 17:57:34,641 INFO L482 AbstractCegarLoop]: Abstraction has has 405 places, 352 transitions, 41190 flow [2021-08-13 17:57:34,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:34,643 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:34,643 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:34,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 17:57:34,643 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1115593242, now seen corresponding path program 61 times [2021-08-13 17:57:34,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:34,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005468539] [2021-08-13 17:57:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:34,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:34,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:34,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:34,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:34,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:34,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:34,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:34,704 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:34,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:34,721 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:34,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:34,737 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 17:57:34,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:34,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005468539] [2021-08-13 17:57:34,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005468539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:34,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:34,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:34,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197128050] [2021-08-13 17:57:34,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:34,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:34,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:34,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:34,738 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:34,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 352 transitions, 41190 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:34,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:34,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:34,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,037 INFO L129 PetriNetUnfolder]: 3/1078 cut-off events. [2021-08-13 17:57:35,038 INFO L130 PetriNetUnfolder]: For 142613/150658 co-relation queries the response was YES. [2021-08-13 17:57:35,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22504 conditions, 1078 events. 3/1078 cut-off events. For 142613/150658 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13623 event pairs, 0 based on Foata normal form. 16/1074 useless extension candidates. Maximal degree in co-relation 19306. Up to 165 conditions per place. [2021-08-13 17:57:35,042 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 126 selfloop transitions, 50 changer transitions 160/351 dead transitions. [2021-08-13 17:57:35,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 351 transitions, 41740 flow [2021-08-13 17:57:35,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:35,043 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:35,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:35,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,044 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 374 predicate places. [2021-08-13 17:57:35,044 INFO L482 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 41740 flow [2021-08-13 17:57:35,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:35,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,044 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:35,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-13 17:57:35,045 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,045 INFO L82 PathProgramCache]: Analyzing trace with hash 810923940, now seen corresponding path program 62 times [2021-08-13 17:57:35,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421769325] [2021-08-13 17:57:35,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:35,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:35,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:35,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:35,113 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:35,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:35,161 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:35,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:35,179 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 17:57:35,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:35,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421769325] [2021-08-13 17:57:35,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421769325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:35,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:35,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:35,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130381719] [2021-08-13 17:57:35,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:35,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:35,182 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:35,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 41740 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:35,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:35,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:35,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,509 INFO L129 PetriNetUnfolder]: 3/1077 cut-off events. [2021-08-13 17:57:35,510 INFO L130 PetriNetUnfolder]: For 134888/140203 co-relation queries the response was YES. [2021-08-13 17:57:35,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 1077 events. 3/1077 cut-off events. For 134888/140203 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13660 event pairs, 0 based on Foata normal form. 9/1066 useless extension candidates. Maximal degree in co-relation 19597. Up to 164 conditions per place. [2021-08-13 17:57:35,514 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 124 selfloop transitions, 47 changer transitions 164/350 dead transitions. [2021-08-13 17:57:35,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 350 transitions, 42286 flow [2021-08-13 17:57:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:35,515 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:35,515 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:35,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,516 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 380 predicate places. [2021-08-13 17:57:35,516 INFO L482 AbstractCegarLoop]: Abstraction has has 417 places, 350 transitions, 42286 flow [2021-08-13 17:57:35,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:35,516 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,516 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:35,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-13 17:57:35,516 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2116194332, now seen corresponding path program 63 times [2021-08-13 17:57:35,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600980292] [2021-08-13 17:57:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:35,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:35,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:35,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:35,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:35,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:35,592 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:35,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:35,610 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 17:57:35,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:35,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600980292] [2021-08-13 17:57:35,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600980292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:35,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:35,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:35,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487890935] [2021-08-13 17:57:35,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:35,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:35,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:35,612 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:35,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 350 transitions, 42286 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:35,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:35,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:35,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:35,963 INFO L129 PetriNetUnfolder]: 3/1076 cut-off events. [2021-08-13 17:57:35,964 INFO L130 PetriNetUnfolder]: For 137955/143510 co-relation queries the response was YES. [2021-08-13 17:57:35,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23050 conditions, 1076 events. 3/1076 cut-off events. For 137955/143510 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13614 event pairs, 0 based on Foata normal form. 9/1065 useless extension candidates. Maximal degree in co-relation 19888. Up to 164 conditions per place. [2021-08-13 17:57:35,967 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 55 changer transitions 168/349 dead transitions. [2021-08-13 17:57:35,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 349 transitions, 42828 flow [2021-08-13 17:57:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:35,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:35,968 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:35,968 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:35,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:35,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:35,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:35,969 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 386 predicate places. [2021-08-13 17:57:35,969 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 349 transitions, 42828 flow [2021-08-13 17:57:35,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:35,969 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:35,969 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:35,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-13 17:57:35,970 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:35,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:35,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1066114972, now seen corresponding path program 64 times [2021-08-13 17:57:35,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:35,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611852374] [2021-08-13 17:57:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:35,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:35,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:35,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:35,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:36,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:36,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:36,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:36,030 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:36,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:36,044 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 17:57:36,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:36,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611852374] [2021-08-13 17:57:36,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611852374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:36,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:36,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552791303] [2021-08-13 17:57:36,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:36,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:36,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:36,045 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:36,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 349 transitions, 42828 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:36,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:36,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:36,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:36,431 INFO L129 PetriNetUnfolder]: 3/1075 cut-off events. [2021-08-13 17:57:36,431 INFO L130 PetriNetUnfolder]: For 147014/154900 co-relation queries the response was YES. [2021-08-13 17:57:36,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23320 conditions, 1075 events. 3/1075 cut-off events. For 147014/154900 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13588 event pairs, 0 based on Foata normal form. 16/1072 useless extension candidates. Maximal degree in co-relation 20179. Up to 164 conditions per place. [2021-08-13 17:57:36,435 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 108 selfloop transitions, 55 changer transitions 170/348 dead transitions. [2021-08-13 17:57:36,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 348 transitions, 43366 flow [2021-08-13 17:57:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:36,435 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:36,436 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:36,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:36,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:36,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:36,437 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 392 predicate places. [2021-08-13 17:57:36,437 INFO L482 AbstractCegarLoop]: Abstraction has has 429 places, 348 transitions, 43366 flow [2021-08-13 17:57:36,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:36,437 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:36,437 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:36,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-13 17:57:36,437 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:36,437 INFO L82 PathProgramCache]: Analyzing trace with hash -792144762, now seen corresponding path program 65 times [2021-08-13 17:57:36,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:36,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068091510] [2021-08-13 17:57:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:36,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:36,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:36,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:36,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:36,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:36,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:36,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:36,495 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:36,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:36,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:36,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068091510] [2021-08-13 17:57:36,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068091510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:36,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:36,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:36,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603295085] [2021-08-13 17:57:36,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:36,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:36,511 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:36,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 348 transitions, 43366 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:36,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:36,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:36,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:36,871 INFO L129 PetriNetUnfolder]: 3/1074 cut-off events. [2021-08-13 17:57:36,871 INFO L130 PetriNetUnfolder]: For 146896/154480 co-relation queries the response was YES. [2021-08-13 17:57:36,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23588 conditions, 1074 events. 3/1074 cut-off events. For 146896/154480 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13608 event pairs, 0 based on Foata normal form. 27/1081 useless extension candidates. Maximal degree in co-relation 20470. Up to 163 conditions per place. [2021-08-13 17:57:36,875 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 106 selfloop transitions, 54 changer transitions 172/347 dead transitions. [2021-08-13 17:57:36,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 347 transitions, 43900 flow [2021-08-13 17:57:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:36,875 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:36,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:36,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:36,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:36,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:36,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:36,876 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 398 predicate places. [2021-08-13 17:57:36,876 INFO L482 AbstractCegarLoop]: Abstraction has has 435 places, 347 transitions, 43900 flow [2021-08-13 17:57:36,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:36,877 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:36,877 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:36,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-13 17:57:36,877 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:36,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:36,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2144408832, now seen corresponding path program 66 times [2021-08-13 17:57:36,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:36,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214354453] [2021-08-13 17:57:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:36,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:36,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:36,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:36,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:36,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:36,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:36,913 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:36,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:36,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:36,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:36,946 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 17:57:36,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:36,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214354453] [2021-08-13 17:57:36,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214354453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:36,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:36,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:36,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900291987] [2021-08-13 17:57:36,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:36,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:36,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:36,948 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:36,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 347 transitions, 43900 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:36,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:36,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:36,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:37,232 INFO L129 PetriNetUnfolder]: 3/1073 cut-off events. [2021-08-13 17:57:37,233 INFO L130 PetriNetUnfolder]: For 149998/157848 co-relation queries the response was YES. [2021-08-13 17:57:37,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23854 conditions, 1073 events. 3/1073 cut-off events. For 149998/157848 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13587 event pairs, 0 based on Foata normal form. 27/1080 useless extension candidates. Maximal degree in co-relation 20761. Up to 163 conditions per place. [2021-08-13 17:57:37,236 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 53 changer transitions 175/346 dead transitions. [2021-08-13 17:57:37,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 346 transitions, 44430 flow [2021-08-13 17:57:37,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:37,237 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:37,237 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:37,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:37,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:37,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:37,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:37,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:37,239 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:37,239 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 404 predicate places. [2021-08-13 17:57:37,239 INFO L482 AbstractCegarLoop]: Abstraction has has 441 places, 346 transitions, 44430 flow [2021-08-13 17:57:37,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:37,239 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:37,239 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:37,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-13 17:57:37,239 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:37,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1183084258, now seen corresponding path program 67 times [2021-08-13 17:57:37,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:37,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134055938] [2021-08-13 17:57:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:37,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:37,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:37,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:37,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:37,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:37,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:37,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:37,324 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:37,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:37,341 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 17:57:37,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:37,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134055938] [2021-08-13 17:57:37,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134055938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:37,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:37,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:37,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861517008] [2021-08-13 17:57:37,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:37,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:37,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:37,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:37,344 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:37,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 346 transitions, 44430 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:37,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:37,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:37,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:37,711 INFO L129 PetriNetUnfolder]: 3/1072 cut-off events. [2021-08-13 17:57:37,711 INFO L130 PetriNetUnfolder]: For 156794/165556 co-relation queries the response was YES. [2021-08-13 17:57:37,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24118 conditions, 1072 events. 3/1072 cut-off events. For 156794/165556 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 13569 event pairs, 0 based on Foata normal form. 16/1069 useless extension candidates. Maximal degree in co-relation 21052. Up to 163 conditions per place. [2021-08-13 17:57:37,716 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 103 selfloop transitions, 49 changer transitions 178/345 dead transitions. [2021-08-13 17:57:37,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 345 transitions, 44956 flow [2021-08-13 17:57:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:37,717 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:37,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:37,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:37,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:37,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:37,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:37,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:37,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:37,718 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 410 predicate places. [2021-08-13 17:57:37,718 INFO L482 AbstractCegarLoop]: Abstraction has has 447 places, 345 transitions, 44956 flow [2021-08-13 17:57:37,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:37,718 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:37,718 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:37,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-13 17:57:37,718 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:37,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:37,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1255957796, now seen corresponding path program 68 times [2021-08-13 17:57:37,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:37,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016762030] [2021-08-13 17:57:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:37,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:37,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:37,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:37,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:37,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:37,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:37,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:37,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:37,791 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 17:57:37,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:37,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016762030] [2021-08-13 17:57:37,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016762030] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:37,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:37,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:37,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830555084] [2021-08-13 17:57:37,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:37,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:37,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:37,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:37,793 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:37,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 345 transitions, 44956 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:37,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:37,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:37,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:38,175 INFO L129 PetriNetUnfolder]: 3/1071 cut-off events. [2021-08-13 17:57:38,175 INFO L130 PetriNetUnfolder]: For 153110/159865 co-relation queries the response was YES. [2021-08-13 17:57:38,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24380 conditions, 1071 events. 3/1071 cut-off events. For 153110/159865 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 13574 event pairs, 0 based on Foata normal form. 9/1060 useless extension candidates. Maximal degree in co-relation 21343. Up to 163 conditions per place. [2021-08-13 17:57:38,179 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 100 selfloop transitions, 47 changer transitions 182/344 dead transitions. [2021-08-13 17:57:38,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 344 transitions, 45478 flow [2021-08-13 17:57:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:38,180 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:38,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:38,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:38,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:38,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:38,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:38,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:38,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:38,181 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 416 predicate places. [2021-08-13 17:57:38,181 INFO L482 AbstractCegarLoop]: Abstraction has has 453 places, 344 transitions, 45478 flow [2021-08-13 17:57:38,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:38,182 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:38,182 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:38,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-13 17:57:38,182 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2092745232, now seen corresponding path program 69 times [2021-08-13 17:57:38,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:38,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842142337] [2021-08-13 17:57:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:38,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:38,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:38,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:38,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:38,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:38,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:38,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:38,240 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:38,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:38,257 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 17:57:38,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:38,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842142337] [2021-08-13 17:57:38,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842142337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:38,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:38,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:38,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4532876] [2021-08-13 17:57:38,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:38,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:38,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:38,258 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:38,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 344 transitions, 45478 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:38,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:38,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:38,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:38,587 INFO L129 PetriNetUnfolder]: 1/1157 cut-off events. [2021-08-13 17:57:38,587 INFO L130 PetriNetUnfolder]: For 174955/181950 co-relation queries the response was YES. [2021-08-13 17:57:38,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26661 conditions, 1157 events. 1/1157 cut-off events. For 174955/181950 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14947 event pairs, 0 based on Foata normal form. 9/1146 useless extension candidates. Maximal degree in co-relation 23071. Up to 178 conditions per place. [2021-08-13 17:57:38,591 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 127 selfloop transitions, 44 changer transitions 184/370 dead transitions. [2021-08-13 17:57:38,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 370 transitions, 49776 flow [2021-08-13 17:57:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:38,592 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:38,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:38,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:38,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:38,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:38,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:38,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:38,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:38,593 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 422 predicate places. [2021-08-13 17:57:38,593 INFO L482 AbstractCegarLoop]: Abstraction has has 459 places, 370 transitions, 49776 flow [2021-08-13 17:57:38,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:38,593 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:38,593 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:38,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-13 17:57:38,593 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1250051154, now seen corresponding path program 70 times [2021-08-13 17:57:38,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:38,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311062626] [2021-08-13 17:57:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:38,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:38,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:38,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:38,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:38,620 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:38,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:38,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:38,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:38,649 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:38,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:38,665 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 17:57:38,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:38,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311062626] [2021-08-13 17:57:38,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311062626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:38,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:38,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:38,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411167097] [2021-08-13 17:57:38,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:38,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:38,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:38,666 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:38,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 370 transitions, 49776 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:38,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:38,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:38,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:39,240 INFO L129 PetriNetUnfolder]: 1/1156 cut-off events. [2021-08-13 17:57:39,240 INFO L130 PetriNetUnfolder]: For 194589/205856 co-relation queries the response was YES. [2021-08-13 17:57:39,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26946 conditions, 1156 events. 1/1156 cut-off events. For 194589/205856 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14890 event pairs, 0 based on Foata normal form. 16/1152 useless extension candidates. Maximal degree in co-relation 23381. Up to 177 conditions per place. [2021-08-13 17:57:39,245 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 125 selfloop transitions, 42 changer transitions 187/369 dead transitions. [2021-08-13 17:57:39,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 369 transitions, 50344 flow [2021-08-13 17:57:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:39,246 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:39,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:39,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:39,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:39,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:39,247 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 428 predicate places. [2021-08-13 17:57:39,247 INFO L482 AbstractCegarLoop]: Abstraction has has 465 places, 369 transitions, 50344 flow [2021-08-13 17:57:39,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:39,247 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:39,247 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:39,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-13 17:57:39,247 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash 113744454, now seen corresponding path program 71 times [2021-08-13 17:57:39,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:39,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780113940] [2021-08-13 17:57:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:39,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:39,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:39,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:39,280 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:39,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:39,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:39,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:39,319 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:39,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:39,337 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 17:57:39,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:39,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780113940] [2021-08-13 17:57:39,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780113940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:39,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:39,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:39,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089214680] [2021-08-13 17:57:39,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:39,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:39,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:39,339 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:39,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 369 transitions, 50344 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:39,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:39,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:39,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:39,645 INFO L129 PetriNetUnfolder]: 1/1155 cut-off events. [2021-08-13 17:57:39,645 INFO L130 PetriNetUnfolder]: For 198761/210386 co-relation queries the response was YES. [2021-08-13 17:57:39,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27229 conditions, 1155 events. 1/1155 cut-off events. For 198761/210386 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14841 event pairs, 0 based on Foata normal form. 16/1151 useless extension candidates. Maximal degree in co-relation 23691. Up to 176 conditions per place. [2021-08-13 17:57:39,648 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 118 selfloop transitions, 46 changer transitions 189/368 dead transitions. [2021-08-13 17:57:39,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 368 transitions, 50908 flow [2021-08-13 17:57:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:39,649 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:39,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:39,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:39,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:39,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:39,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:39,650 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 434 predicate places. [2021-08-13 17:57:39,650 INFO L482 AbstractCegarLoop]: Abstraction has has 471 places, 368 transitions, 50908 flow [2021-08-13 17:57:39,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:39,650 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:39,650 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:39,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-13 17:57:39,650 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1318723572, now seen corresponding path program 72 times [2021-08-13 17:57:39,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:39,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654147117] [2021-08-13 17:57:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:39,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:39,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:39,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:39,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:39,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:39,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:39,695 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:39,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:39,709 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:39,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:39,729 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 17:57:39,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:39,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654147117] [2021-08-13 17:57:39,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654147117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:39,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:39,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:39,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912283772] [2021-08-13 17:57:39,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:39,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:39,731 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:39,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 368 transitions, 50908 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:39,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:39,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:39,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:40,090 INFO L129 PetriNetUnfolder]: 1/1154 cut-off events. [2021-08-13 17:57:40,090 INFO L130 PetriNetUnfolder]: For 202929/214912 co-relation queries the response was YES. [2021-08-13 17:57:40,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27510 conditions, 1154 events. 1/1154 cut-off events. For 202929/214912 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14866 event pairs, 0 based on Foata normal form. 16/1150 useless extension candidates. Maximal degree in co-relation 24001. Up to 175 conditions per place. [2021-08-13 17:57:40,094 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 116 selfloop transitions, 44 changer transitions 192/367 dead transitions. [2021-08-13 17:57:40,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 367 transitions, 51468 flow [2021-08-13 17:57:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:40,095 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:40,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:40,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:40,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,098 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 440 predicate places. [2021-08-13 17:57:40,098 INFO L482 AbstractCegarLoop]: Abstraction has has 477 places, 367 transitions, 51468 flow [2021-08-13 17:57:40,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:40,098 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:40,098 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:40,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-13 17:57:40,098 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:40,098 INFO L82 PathProgramCache]: Analyzing trace with hash 30021204, now seen corresponding path program 73 times [2021-08-13 17:57:40,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:40,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653750873] [2021-08-13 17:57:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:40,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:40,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:40,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:40,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:40,132 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:40,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:40,148 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:40,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:40,165 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 17:57:40,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:40,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653750873] [2021-08-13 17:57:40,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653750873] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:40,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:40,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:40,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486093751] [2021-08-13 17:57:40,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:40,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:40,167 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:40,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 367 transitions, 51468 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:40,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:40,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:40,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:40,496 INFO L129 PetriNetUnfolder]: 1/1153 cut-off events. [2021-08-13 17:57:40,496 INFO L130 PetriNetUnfolder]: For 197022/207536 co-relation queries the response was YES. [2021-08-13 17:57:40,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27789 conditions, 1153 events. 1/1153 cut-off events. For 197022/207536 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14838 event pairs, 0 based on Foata normal form. 16/1150 useless extension candidates. Maximal degree in co-relation 24311. Up to 174 conditions per place. [2021-08-13 17:57:40,500 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 114 selfloop transitions, 43 changer transitions 194/366 dead transitions. [2021-08-13 17:57:40,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 366 transitions, 52024 flow [2021-08-13 17:57:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:40,501 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:40,501 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:40,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:40,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,502 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 446 predicate places. [2021-08-13 17:57:40,502 INFO L482 AbstractCegarLoop]: Abstraction has has 483 places, 366 transitions, 52024 flow [2021-08-13 17:57:40,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:40,502 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:40,502 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:40,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-13 17:57:40,502 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1133313126, now seen corresponding path program 74 times [2021-08-13 17:57:40,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:40,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363976455] [2021-08-13 17:57:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:40,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:40,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:40,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:40,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:57:40,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:40,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:40,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:40,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:40,571 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 17:57:40,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:40,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363976455] [2021-08-13 17:57:40,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363976455] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:40,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:40,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:40,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678891203] [2021-08-13 17:57:40,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:40,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:40,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:40,572 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:40,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 366 transitions, 52024 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:40,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:40,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:40,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:40,930 INFO L129 PetriNetUnfolder]: 1/1152 cut-off events. [2021-08-13 17:57:40,931 INFO L130 PetriNetUnfolder]: For 200695/211501 co-relation queries the response was YES. [2021-08-13 17:57:40,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28066 conditions, 1152 events. 1/1152 cut-off events. For 200695/211501 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14838 event pairs, 0 based on Foata normal form. 16/1149 useless extension candidates. Maximal degree in co-relation 24621. Up to 173 conditions per place. [2021-08-13 17:57:40,935 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 40 changer transitions 199/365 dead transitions. [2021-08-13 17:57:40,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 365 transitions, 52576 flow [2021-08-13 17:57:40,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:40,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:40,936 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:40,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:40,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:40,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:40,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:40,937 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 452 predicate places. [2021-08-13 17:57:40,937 INFO L482 AbstractCegarLoop]: Abstraction has has 489 places, 365 transitions, 52576 flow [2021-08-13 17:57:40,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:40,937 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:40,937 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:40,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-13 17:57:40,937 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -473739948, now seen corresponding path program 75 times [2021-08-13 17:57:40,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:40,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542646333] [2021-08-13 17:57:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:40,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:40,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:40,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:40,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:40,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:40,967 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:40,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:40,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:40,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:40,998 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:41,014 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 17:57:41,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:41,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542646333] [2021-08-13 17:57:41,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542646333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:41,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:41,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:41,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73508307] [2021-08-13 17:57:41,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:41,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:41,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:41,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:41,015 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:41,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 365 transitions, 52576 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:41,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:41,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:41,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:41,459 INFO L129 PetriNetUnfolder]: 1/1151 cut-off events. [2021-08-13 17:57:41,459 INFO L130 PetriNetUnfolder]: For 215379/228436 co-relation queries the response was YES. [2021-08-13 17:57:41,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28341 conditions, 1151 events. 1/1151 cut-off events. For 215379/228436 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14803 event pairs, 0 based on Foata normal form. 16/1147 useless extension candidates. Maximal degree in co-relation 24931. Up to 173 conditions per place. [2021-08-13 17:57:41,463 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 98 selfloop transitions, 50 changer transitions 201/364 dead transitions. [2021-08-13 17:57:41,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 364 transitions, 53124 flow [2021-08-13 17:57:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:41,463 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:41,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:41,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:41,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:41,464 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 458 predicate places. [2021-08-13 17:57:41,464 INFO L482 AbstractCegarLoop]: Abstraction has has 495 places, 364 transitions, 53124 flow [2021-08-13 17:57:41,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:41,464 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:41,465 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:41,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-13 17:57:41,465 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:41,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2102379816, now seen corresponding path program 76 times [2021-08-13 17:57:41,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:41,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412696750] [2021-08-13 17:57:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:41,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:41,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:41,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:41,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:41,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:41,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:41,512 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:41,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:41,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:41,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:41,545 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 17:57:41,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:41,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412696750] [2021-08-13 17:57:41,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412696750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:41,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:41,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:41,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463172094] [2021-08-13 17:57:41,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:41,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:41,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:41,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:41,547 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:41,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 364 transitions, 53124 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:41,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:41,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:41,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:41,864 INFO L129 PetriNetUnfolder]: 1/1150 cut-off events. [2021-08-13 17:57:41,864 INFO L130 PetriNetUnfolder]: For 196983/207207 co-relation queries the response was YES. [2021-08-13 17:57:41,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28614 conditions, 1150 events. 1/1150 cut-off events. For 196983/207207 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14784 event pairs, 0 based on Foata normal form. 12/1142 useless extension candidates. Maximal degree in co-relation 25241. Up to 173 conditions per place. [2021-08-13 17:57:41,869 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 94 selfloop transitions, 51 changer transitions 203/363 dead transitions. [2021-08-13 17:57:41,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 363 transitions, 53668 flow [2021-08-13 17:57:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:41,870 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:41,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:41,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:41,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:41,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:41,870 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:41,870 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 464 predicate places. [2021-08-13 17:57:41,871 INFO L482 AbstractCegarLoop]: Abstraction has has 501 places, 363 transitions, 53668 flow [2021-08-13 17:57:41,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:41,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:41,871 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:41,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-13 17:57:41,871 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1433150500, now seen corresponding path program 77 times [2021-08-13 17:57:41,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:41,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167891970] [2021-08-13 17:57:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:41,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:41,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:41,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:41,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:41,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:41,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:41,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:41,925 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:41,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:41,944 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:41,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:41,958 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 17:57:41,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:41,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167891970] [2021-08-13 17:57:41,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167891970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:41,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:41,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:41,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910861307] [2021-08-13 17:57:41,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:41,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:41,960 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:41,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 363 transitions, 53668 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:41,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:41,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:41,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:42,311 INFO L129 PetriNetUnfolder]: 1/1149 cut-off events. [2021-08-13 17:57:42,312 INFO L130 PetriNetUnfolder]: For 200262/211052 co-relation queries the response was YES. [2021-08-13 17:57:42,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28885 conditions, 1149 events. 1/1149 cut-off events. For 200262/211052 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 14810 event pairs, 0 based on Foata normal form. 12/1141 useless extension candidates. Maximal degree in co-relation 25551. Up to 173 conditions per place. [2021-08-13 17:57:42,316 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 92 selfloop transitions, 50 changer transitions 205/362 dead transitions. [2021-08-13 17:57:42,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 362 transitions, 54208 flow [2021-08-13 17:57:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:42,317 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:42,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:42,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:42,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:42,318 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:42,318 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 470 predicate places. [2021-08-13 17:57:42,318 INFO L482 AbstractCegarLoop]: Abstraction has has 507 places, 362 transitions, 54208 flow [2021-08-13 17:57:42,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:42,318 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:42,318 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:42,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-13 17:57:42,318 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash 86529456, now seen corresponding path program 78 times [2021-08-13 17:57:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:42,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745100665] [2021-08-13 17:57:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:42,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:42,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:42,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:42,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:42,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:42,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:42,361 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:42,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:42,376 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:42,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:42,390 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 17:57:42,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:42,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745100665] [2021-08-13 17:57:42,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745100665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:42,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:42,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:42,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862057624] [2021-08-13 17:57:42,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:42,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:42,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:42,391 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:42,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 362 transitions, 54208 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:42,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:42,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:42,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:42,760 INFO L129 PetriNetUnfolder]: 1/1148 cut-off events. [2021-08-13 17:57:42,761 INFO L130 PetriNetUnfolder]: For 205627/215772 co-relation queries the response was YES. [2021-08-13 17:57:42,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29154 conditions, 1148 events. 1/1148 cut-off events. For 205627/215772 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14782 event pairs, 0 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 25861. Up to 173 conditions per place. [2021-08-13 17:57:42,764 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 91 selfloop transitions, 47 changer transitions 208/361 dead transitions. [2021-08-13 17:57:42,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 361 transitions, 54744 flow [2021-08-13 17:57:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:42,765 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:42,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:42,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:42,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:42,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:42,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:42,766 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 476 predicate places. [2021-08-13 17:57:42,766 INFO L482 AbstractCegarLoop]: Abstraction has has 513 places, 361 transitions, 54744 flow [2021-08-13 17:57:42,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:42,766 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:42,766 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:42,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-13 17:57:42,766 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:42,766 INFO L82 PathProgramCache]: Analyzing trace with hash 590805818, now seen corresponding path program 79 times [2021-08-13 17:57:42,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:42,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713511009] [2021-08-13 17:57:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:42,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:42,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:42,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:42,786 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:42,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:42,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:42,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:42,812 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:42,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:42,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:42,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:42,846 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 17:57:42,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:42,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713511009] [2021-08-13 17:57:42,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713511009] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:42,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:42,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:42,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763108539] [2021-08-13 17:57:42,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:42,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:42,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:42,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:42,847 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:42,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 361 transitions, 54744 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:42,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:42,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:42,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:43,199 INFO L129 PetriNetUnfolder]: 1/1147 cut-off events. [2021-08-13 17:57:43,199 INFO L130 PetriNetUnfolder]: For 208950/219665 co-relation queries the response was YES. [2021-08-13 17:57:43,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29421 conditions, 1147 events. 1/1147 cut-off events. For 208950/219665 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14792 event pairs, 0 based on Foata normal form. 1/1128 useless extension candidates. Maximal degree in co-relation 26171. Up to 173 conditions per place. [2021-08-13 17:57:43,203 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 90 selfloop transitions, 44 changer transitions 211/360 dead transitions. [2021-08-13 17:57:43,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 360 transitions, 55276 flow [2021-08-13 17:57:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:43,204 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:43,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:43,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:43,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:43,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:43,205 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 482 predicate places. [2021-08-13 17:57:43,205 INFO L482 AbstractCegarLoop]: Abstraction has has 519 places, 360 transitions, 55276 flow [2021-08-13 17:57:43,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:43,205 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:43,205 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:43,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-13 17:57:43,205 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1509660846, now seen corresponding path program 80 times [2021-08-13 17:57:43,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:43,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735003355] [2021-08-13 17:57:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:43,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:43,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:43,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:43,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:43,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:43,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:43,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:43,254 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:43,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:43,268 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 17:57:43,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:43,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735003355] [2021-08-13 17:57:43,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735003355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:43,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:43,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:43,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321319809] [2021-08-13 17:57:43,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:43,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:43,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:43,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:43,269 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:43,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 360 transitions, 55276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:43,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:43,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:43,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:43,745 INFO L129 PetriNetUnfolder]: 0/1212 cut-off events. [2021-08-13 17:57:43,746 INFO L130 PetriNetUnfolder]: For 215338/225537 co-relation queries the response was YES. [2021-08-13 17:57:43,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31485 conditions, 1212 events. 0/1212 cut-off events. For 215338/225537 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15752 event pairs, 0 based on Foata normal form. 12/1205 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 17:57:43,749 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 111 selfloop transitions, 41 changer transitions 213/380 dead transitions. [2021-08-13 17:57:43,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 380 transitions, 59206 flow [2021-08-13 17:57:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:43,751 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:43,751 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:43,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:43,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:43,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:43,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:43,752 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 488 predicate places. [2021-08-13 17:57:43,752 INFO L482 AbstractCegarLoop]: Abstraction has has 525 places, 380 transitions, 59206 flow [2021-08-13 17:57:43,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:43,752 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:43,752 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:43,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-13 17:57:43,752 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:43,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1944895258, now seen corresponding path program 81 times [2021-08-13 17:57:43,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:43,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613839345] [2021-08-13 17:57:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:43,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:43,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:43,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:43,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:43,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:43,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:43,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:43,810 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:43,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:43,828 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:43,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:43,845 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 17:57:43,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:43,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613839345] [2021-08-13 17:57:43,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613839345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:43,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:43,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:43,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357083146] [2021-08-13 17:57:43,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:43,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:43,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:43,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:43,847 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:43,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 380 transitions, 59206 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:43,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:43,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:43,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:44,387 INFO L129 PetriNetUnfolder]: 0/1211 cut-off events. [2021-08-13 17:57:44,387 INFO L130 PetriNetUnfolder]: For 240952/258136 co-relation queries the response was YES. [2021-08-13 17:57:44,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31769 conditions, 1211 events. 0/1211 cut-off events. For 240952/258136 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15749 event pairs, 0 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 17:57:44,392 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 96 selfloop transitions, 51 changer transitions 217/379 dead transitions. [2021-08-13 17:57:44,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 379 transitions, 59772 flow [2021-08-13 17:57:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:44,393 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:44,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:44,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:44,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:44,394 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:44,394 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 494 predicate places. [2021-08-13 17:57:44,395 INFO L482 AbstractCegarLoop]: Abstraction has has 531 places, 379 transitions, 59772 flow [2021-08-13 17:57:44,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:44,395 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:44,395 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:44,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-13 17:57:44,395 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -69217132, now seen corresponding path program 82 times [2021-08-13 17:57:44,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:44,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662124298] [2021-08-13 17:57:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:44,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:44,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:44,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:44,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:44,435 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:44,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:44,454 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:44,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:44,473 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 17:57:44,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:44,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662124298] [2021-08-13 17:57:44,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662124298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:44,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:44,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:44,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917720924] [2021-08-13 17:57:44,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:44,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:44,477 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:44,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 379 transitions, 59772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:44,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:44,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:44,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:44,980 INFO L129 PetriNetUnfolder]: 0/1210 cut-off events. [2021-08-13 17:57:44,980 INFO L130 PetriNetUnfolder]: For 245176/263458 co-relation queries the response was YES. [2021-08-13 17:57:44,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32051 conditions, 1210 events. 0/1210 cut-off events. For 245176/263458 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15721 event pairs, 0 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 17:57:44,984 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 92 selfloop transitions, 52 changer transitions 219/378 dead transitions. [2021-08-13 17:57:44,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 378 transitions, 60334 flow [2021-08-13 17:57:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:44,985 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:44,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:44,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:44,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:44,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:44,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:44,986 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 500 predicate places. [2021-08-13 17:57:44,986 INFO L482 AbstractCegarLoop]: Abstraction has has 537 places, 378 transitions, 60334 flow [2021-08-13 17:57:44,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:44,986 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:44,986 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:44,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-13 17:57:44,987 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1932876026, now seen corresponding path program 83 times [2021-08-13 17:57:44,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:44,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993094058] [2021-08-13 17:57:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:44,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:44,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:44,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:45,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:45,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:45,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:45,034 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:45,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:45,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:45,069 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 17:57:45,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:45,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993094058] [2021-08-13 17:57:45,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993094058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:45,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:45,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:45,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305873138] [2021-08-13 17:57:45,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:45,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:45,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:45,071 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:45,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 378 transitions, 60334 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:45,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:45,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:45,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:45,505 INFO L129 PetriNetUnfolder]: 0/1209 cut-off events. [2021-08-13 17:57:45,505 INFO L130 PetriNetUnfolder]: For 220676/230958 co-relation queries the response was YES. [2021-08-13 17:57:45,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32331 conditions, 1209 events. 0/1209 cut-off events. For 220676/230958 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15721 event pairs, 0 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 189 conditions per place. [2021-08-13 17:57:45,509 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 87 selfloop transitions, 54 changer transitions 221/377 dead transitions. [2021-08-13 17:57:45,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 377 transitions, 60892 flow [2021-08-13 17:57:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:45,510 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:45,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:45,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:45,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:45,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:45,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:45,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:45,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:45,511 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 506 predicate places. [2021-08-13 17:57:45,511 INFO L482 AbstractCegarLoop]: Abstraction has has 543 places, 377 transitions, 60892 flow [2021-08-13 17:57:45,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:45,511 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:45,511 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:45,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-13 17:57:45,511 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:45,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:45,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1663506578, now seen corresponding path program 84 times [2021-08-13 17:57:45,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:45,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336782635] [2021-08-13 17:57:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:45,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:45,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:45,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:45,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:45,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:45,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:45,554 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:45,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:45,570 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:45,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:45,589 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 17:57:45,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:45,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336782635] [2021-08-13 17:57:45,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336782635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:45,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:45,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:45,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415496605] [2021-08-13 17:57:45,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:45,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:45,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:45,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:45,591 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:45,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 377 transitions, 60892 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:45,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:45,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:45,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:45,993 INFO L129 PetriNetUnfolder]: 0/1208 cut-off events. [2021-08-13 17:57:45,994 INFO L130 PetriNetUnfolder]: For 246228/259793 co-relation queries the response was YES. [2021-08-13 17:57:45,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32609 conditions, 1208 events. 0/1208 cut-off events. For 246228/259793 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15760 event pairs, 0 based on Foata normal form. 1/1189 useless extension candidates. Maximal degree in co-relation 0. Up to 188 conditions per place. [2021-08-13 17:57:45,997 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 91 selfloop transitions, 46 changer transitions 224/376 dead transitions. [2021-08-13 17:57:45,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 376 transitions, 61446 flow [2021-08-13 17:57:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:45,998 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:45,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:45,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:45,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:45,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:45,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:45,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:45,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:45,999 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 512 predicate places. [2021-08-13 17:57:45,999 INFO L482 AbstractCegarLoop]: Abstraction has has 549 places, 376 transitions, 61446 flow [2021-08-13 17:57:45,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:45,999 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:45,999 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:45,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-13 17:57:45,999 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:46,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:46,000 INFO L82 PathProgramCache]: Analyzing trace with hash -751718194, now seen corresponding path program 85 times [2021-08-13 17:57:46,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:46,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156020938] [2021-08-13 17:57:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:46,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:46,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:46,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:46,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:46,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:46,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:46,057 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:46,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:46,072 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 17:57:46,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:46,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156020938] [2021-08-13 17:57:46,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156020938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:46,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:46,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:46,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318094432] [2021-08-13 17:57:46,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:46,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:46,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:46,074 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:46,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 376 transitions, 61446 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:46,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:46,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:46,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:46,491 INFO L129 PetriNetUnfolder]: 0/1207 cut-off events. [2021-08-13 17:57:46,491 INFO L130 PetriNetUnfolder]: For 249902/264037 co-relation queries the response was YES. [2021-08-13 17:57:46,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32885 conditions, 1207 events. 0/1207 cut-off events. For 249902/264037 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15740 event pairs, 0 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 0. Up to 188 conditions per place. [2021-08-13 17:57:46,494 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 85 selfloop transitions, 48 changer transitions 227/375 dead transitions. [2021-08-13 17:57:46,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 375 transitions, 61996 flow [2021-08-13 17:57:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:46,495 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:46,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:46,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:46,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:46,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:46,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:46,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:46,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:46,496 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 518 predicate places. [2021-08-13 17:57:46,496 INFO L482 AbstractCegarLoop]: Abstraction has has 555 places, 375 transitions, 61996 flow [2021-08-13 17:57:46,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:46,496 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:46,496 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:46,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-13 17:57:46,496 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:46,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1535170020, now seen corresponding path program 86 times [2021-08-13 17:57:46,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:46,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339294304] [2021-08-13 17:57:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:46,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:46,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:46,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:46,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:46,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:46,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:46,635 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-08-13 17:57:46,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:46,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:46,652 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:46,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:46,667 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 17:57:46,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:46,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339294304] [2021-08-13 17:57:46,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339294304] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:46,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:46,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:46,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569791678] [2021-08-13 17:57:46,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:46,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:46,669 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:46,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 375 transitions, 61996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:46,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:46,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:46,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:47,156 INFO L129 PetriNetUnfolder]: 0/1206 cut-off events. [2021-08-13 17:57:47,156 INFO L130 PetriNetUnfolder]: For 250240/265997 co-relation queries the response was YES. [2021-08-13 17:57:47,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33159 conditions, 1206 events. 0/1206 cut-off events. For 250240/265997 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15672 event pairs, 0 based on Foata normal form. 10/1196 useless extension candidates. Maximal degree in co-relation 0. Up to 187 conditions per place. [2021-08-13 17:57:47,159 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 89 selfloop transitions, 41 changer transitions 229/374 dead transitions. [2021-08-13 17:57:47,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 374 transitions, 62542 flow [2021-08-13 17:57:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:47,160 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:47,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:47,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:47,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:47,161 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:47,161 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 524 predicate places. [2021-08-13 17:57:47,161 INFO L482 AbstractCegarLoop]: Abstraction has has 561 places, 374 transitions, 62542 flow [2021-08-13 17:57:47,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:47,161 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:47,161 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:47,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-13 17:57:47,162 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:47,162 INFO L82 PathProgramCache]: Analyzing trace with hash 475286006, now seen corresponding path program 87 times [2021-08-13 17:57:47,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:47,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915887186] [2021-08-13 17:57:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:47,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:47,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:47,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:47,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:47,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:47,196 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:47,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:47,211 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:47,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:47,226 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 17:57:47,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:47,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915887186] [2021-08-13 17:57:47,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915887186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:47,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:47,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:47,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838367118] [2021-08-13 17:57:47,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:47,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:47,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:47,227 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:47,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 374 transitions, 62542 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:47,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:47,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:47,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:47,619 INFO L129 PetriNetUnfolder]: 0/1205 cut-off events. [2021-08-13 17:57:47,619 INFO L130 PetriNetUnfolder]: For 253735/270058 co-relation queries the response was YES. [2021-08-13 17:57:47,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33431 conditions, 1205 events. 0/1205 cut-off events. For 253735/270058 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15657 event pairs, 0 based on Foata normal form. 10/1195 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 17:57:47,622 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 86 selfloop transitions, 39 changer transitions 233/373 dead transitions. [2021-08-13 17:57:47,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 373 transitions, 63084 flow [2021-08-13 17:57:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:47,623 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:47,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:47,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:47,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:47,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:47,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:47,624 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 530 predicate places. [2021-08-13 17:57:47,624 INFO L482 AbstractCegarLoop]: Abstraction has has 567 places, 373 transitions, 63084 flow [2021-08-13 17:57:47,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:47,624 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:47,624 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:47,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-13 17:57:47,625 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1844237136, now seen corresponding path program 88 times [2021-08-13 17:57:47,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:47,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970471700] [2021-08-13 17:57:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:47,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:47,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:47,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:47,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:47,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:47,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:47,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:47,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:47,688 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:47,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:47,704 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 17:57:47,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:47,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970471700] [2021-08-13 17:57:47,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970471700] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:47,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:47,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:47,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947540333] [2021-08-13 17:57:47,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:47,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:47,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:47,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:47,705 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:47,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 373 transitions, 63084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:47,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:47,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:47,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:48,173 INFO L129 PetriNetUnfolder]: 0/1204 cut-off events. [2021-08-13 17:57:48,173 INFO L130 PetriNetUnfolder]: For 257192/274081 co-relation queries the response was YES. [2021-08-13 17:57:48,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33701 conditions, 1204 events. 0/1204 cut-off events. For 257192/274081 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15636 event pairs, 0 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 17:57:48,177 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 75 selfloop transitions, 47 changer transitions 235/372 dead transitions. [2021-08-13 17:57:48,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 372 transitions, 63622 flow [2021-08-13 17:57:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:48,177 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:48,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:48,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:48,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:48,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:48,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:48,178 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 536 predicate places. [2021-08-13 17:57:48,178 INFO L482 AbstractCegarLoop]: Abstraction has has 573 places, 372 transitions, 63622 flow [2021-08-13 17:57:48,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:48,179 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:48,179 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:48,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-13 17:57:48,179 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:48,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:48,179 INFO L82 PathProgramCache]: Analyzing trace with hash -944944970, now seen corresponding path program 89 times [2021-08-13 17:57:48,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:48,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685593840] [2021-08-13 17:57:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:48,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:48,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:48,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:48,202 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:48,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:48,214 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:48,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:48,230 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:48,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:48,246 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 17:57:48,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:48,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685593840] [2021-08-13 17:57:48,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685593840] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:48,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:48,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:48,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303030361] [2021-08-13 17:57:48,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:48,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:48,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:48,247 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:48,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 372 transitions, 63622 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:48,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:48,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:48,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:48,741 INFO L129 PetriNetUnfolder]: 0/1203 cut-off events. [2021-08-13 17:57:48,741 INFO L130 PetriNetUnfolder]: For 241212/255784 co-relation queries the response was YES. [2021-08-13 17:57:48,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33969 conditions, 1203 events. 0/1203 cut-off events. For 241212/255784 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15641 event pairs, 0 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 0. Up to 186 conditions per place. [2021-08-13 17:57:48,744 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 42 changer transitions 238/371 dead transitions. [2021-08-13 17:57:48,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 371 transitions, 64156 flow [2021-08-13 17:57:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:48,745 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:48,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:48,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:48,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:48,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:48,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:48,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:48,746 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 542 predicate places. [2021-08-13 17:57:48,746 INFO L482 AbstractCegarLoop]: Abstraction has has 579 places, 371 transitions, 64156 flow [2021-08-13 17:57:48,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:48,746 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:48,746 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:48,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-13 17:57:48,747 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash -861445480, now seen corresponding path program 90 times [2021-08-13 17:57:48,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:48,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501988967] [2021-08-13 17:57:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:48,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:48,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:48,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:48,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:48,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:48,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:48,785 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:48,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:48,799 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:48,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:48,818 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 17:57:48,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:48,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501988967] [2021-08-13 17:57:48,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501988967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:48,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:48,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:48,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755528813] [2021-08-13 17:57:48,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:48,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:48,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:48,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:48,819 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:48,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 371 transitions, 64156 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:48,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:48,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:48,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:49,434 INFO L129 PetriNetUnfolder]: 0/1202 cut-off events. [2021-08-13 17:57:49,434 INFO L130 PetriNetUnfolder]: For 243882/258954 co-relation queries the response was YES. [2021-08-13 17:57:49,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34235 conditions, 1202 events. 0/1202 cut-off events. For 243882/258954 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15654 event pairs, 0 based on Foata normal form. 10/1193 useless extension candidates. Maximal degree in co-relation 0. Up to 185 conditions per place. [2021-08-13 17:57:49,437 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 80 selfloop transitions, 35 changer transitions 240/370 dead transitions. [2021-08-13 17:57:49,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 370 transitions, 64686 flow [2021-08-13 17:57:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 307 transitions. [2021-08-13 17:57:49,438 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9136904761904762 [2021-08-13 17:57:49,438 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 307 transitions. [2021-08-13 17:57:49,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 307 transitions. [2021-08-13 17:57:49,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:49,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 307 transitions. [2021-08-13 17:57:49,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.857142857142854) internal successors, (307), 7 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 17:57:49,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:49,439 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:49,439 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 548 predicate places. [2021-08-13 17:57:49,439 INFO L482 AbstractCegarLoop]: Abstraction has has 585 places, 370 transitions, 64686 flow [2021-08-13 17:57:49,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:49,439 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:49,439 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:49,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-13 17:57:49,439 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash -201879340, now seen corresponding path program 91 times [2021-08-13 17:57:49,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:49,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697800683] [2021-08-13 17:57:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:49,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:49,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:49,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:49,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:49,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:49,472 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:49,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:49,488 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:49,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:49,504 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 17:57:49,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:49,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697800683] [2021-08-13 17:57:49,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697800683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:49,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:49,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:49,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103984103] [2021-08-13 17:57:49,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:49,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:49,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:49,506 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:49,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 370 transitions, 64686 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:49,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:49,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:49,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:49,967 INFO L129 PetriNetUnfolder]: 0/1201 cut-off events. [2021-08-13 17:57:49,968 INFO L130 PetriNetUnfolder]: For 267305/285892 co-relation queries the response was YES. [2021-08-13 17:57:49,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34499 conditions, 1201 events. 0/1201 cut-off events. For 267305/285892 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15631 event pairs, 0 based on Foata normal form. 10/1191 useless extension candidates. Maximal degree in co-relation 0. Up to 184 conditions per place. [2021-08-13 17:57:49,972 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 77 selfloop transitions, 34 changer transitions 243/369 dead transitions. [2021-08-13 17:57:49,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 369 transitions, 65212 flow [2021-08-13 17:57:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:49,977 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:49,977 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:49,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:49,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:49,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:49,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:49,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:49,978 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:49,978 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 554 predicate places. [2021-08-13 17:57:49,978 INFO L482 AbstractCegarLoop]: Abstraction has has 591 places, 369 transitions, 65212 flow [2021-08-13 17:57:49,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:49,978 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:49,979 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:49,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-13 17:57:49,979 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:49,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1912111388, now seen corresponding path program 92 times [2021-08-13 17:57:49,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:49,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680315177] [2021-08-13 17:57:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:49,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:49,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:49,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:49,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:50,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:57:50,023 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:50,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:50,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:50,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:50,055 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 17:57:50,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:50,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680315177] [2021-08-13 17:57:50,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680315177] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:50,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:50,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:50,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406679072] [2021-08-13 17:57:50,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:50,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:50,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:50,057 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:50,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 369 transitions, 65212 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:50,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:50,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:50,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:50,634 INFO L129 PetriNetUnfolder]: 0/1200 cut-off events. [2021-08-13 17:57:50,634 INFO L130 PetriNetUnfolder]: For 270580/289733 co-relation queries the response was YES. [2021-08-13 17:57:50,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34761 conditions, 1200 events. 0/1200 cut-off events. For 270580/289733 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15593 event pairs, 0 based on Foata normal form. 10/1190 useless extension candidates. Maximal degree in co-relation 0. Up to 183 conditions per place. [2021-08-13 17:57:50,638 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 68 selfloop transitions, 38 changer transitions 247/368 dead transitions. [2021-08-13 17:57:50,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 368 transitions, 65734 flow [2021-08-13 17:57:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:50,639 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:50,639 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:50,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:50,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:50,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:50,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:50,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:50,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:50,640 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 560 predicate places. [2021-08-13 17:57:50,640 INFO L482 AbstractCegarLoop]: Abstraction has has 597 places, 368 transitions, 65734 flow [2021-08-13 17:57:50,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:50,640 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:50,640 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:50,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-13 17:57:50,640 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:50,641 INFO L82 PathProgramCache]: Analyzing trace with hash -534644962, now seen corresponding path program 93 times [2021-08-13 17:57:50,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:50,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131456926] [2021-08-13 17:57:50,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:50,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:50,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:50,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:50,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:50,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:50,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:50,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:50,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:50,692 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:50,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:50,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:50,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131456926] [2021-08-13 17:57:50,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131456926] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:50,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:50,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:50,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840842047] [2021-08-13 17:57:50,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:50,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:50,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:50,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:50,710 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:50,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 368 transitions, 65734 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:50,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:50,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:50,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:51,307 INFO L129 PetriNetUnfolder]: 0/1199 cut-off events. [2021-08-13 17:57:51,307 INFO L130 PetriNetUnfolder]: For 273802/293521 co-relation queries the response was YES. [2021-08-13 17:57:51,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35021 conditions, 1199 events. 0/1199 cut-off events. For 273802/293521 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15579 event pairs, 0 based on Foata normal form. 10/1189 useless extension candidates. Maximal degree in co-relation 0. Up to 182 conditions per place. [2021-08-13 17:57:51,311 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 80 selfloop transitions, 23 changer transitions 249/367 dead transitions. [2021-08-13 17:57:51,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 367 transitions, 66252 flow [2021-08-13 17:57:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:51,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:51,311 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:51,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:51,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:51,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:51,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:51,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:51,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:51,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:51,313 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 566 predicate places. [2021-08-13 17:57:51,313 INFO L482 AbstractCegarLoop]: Abstraction has has 603 places, 367 transitions, 66252 flow [2021-08-13 17:57:51,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:51,313 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:51,313 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:51,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-13 17:57:51,313 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:51,313 INFO L82 PathProgramCache]: Analyzing trace with hash -110572466, now seen corresponding path program 94 times [2021-08-13 17:57:51,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:51,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204167288] [2021-08-13 17:57:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:51,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:51,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:51,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:51,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:51,333 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:51,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:51,340 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:51,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:51,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:51,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:51,369 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:51,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:51,383 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 17:57:51,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:51,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204167288] [2021-08-13 17:57:51,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204167288] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:51,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:51,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:51,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336456464] [2021-08-13 17:57:51,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:51,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:51,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:51,385 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:51,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 367 transitions, 66252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:51,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:51,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:51,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:52,141 INFO L129 PetriNetUnfolder]: 0/1198 cut-off events. [2021-08-13 17:57:52,141 INFO L130 PetriNetUnfolder]: For 281258/300523 co-relation queries the response was YES. [2021-08-13 17:57:52,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35279 conditions, 1198 events. 0/1198 cut-off events. For 281258/300523 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15633 event pairs, 0 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 0. Up to 181 conditions per place. [2021-08-13 17:57:52,145 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 79 selfloop transitions, 20 changer transitions 252/366 dead transitions. [2021-08-13 17:57:52,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 366 transitions, 66766 flow [2021-08-13 17:57:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:57:52,145 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:57:52,146 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:52,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:57:52,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:52,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:52,146 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 572 predicate places. [2021-08-13 17:57:52,146 INFO L482 AbstractCegarLoop]: Abstraction has has 609 places, 366 transitions, 66766 flow [2021-08-13 17:57:52,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:52,147 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:52,147 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:52,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-13 17:57:52,147 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 105589568, now seen corresponding path program 95 times [2021-08-13 17:57:52,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:52,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801452383] [2021-08-13 17:57:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:52,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:52,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:52,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:52,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:52,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:52,182 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:52,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:52,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:52,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:52,214 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 17:57:52,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:52,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801452383] [2021-08-13 17:57:52,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801452383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:52,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:52,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:52,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605577553] [2021-08-13 17:57:52,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:52,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:52,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:52,215 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:52,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 366 transitions, 66766 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:52,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:52,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:52,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:52,794 INFO L129 PetriNetUnfolder]: 0/1197 cut-off events. [2021-08-13 17:57:52,794 INFO L130 PetriNetUnfolder]: For 284497/304332 co-relation queries the response was YES. [2021-08-13 17:57:52,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35535 conditions, 1197 events. 0/1197 cut-off events. For 284497/304332 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15607 event pairs, 0 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 0. Up to 180 conditions per place. [2021-08-13 17:57:52,797 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 19 changer transitions 255/365 dead transitions. [2021-08-13 17:57:52,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 365 transitions, 67276 flow [2021-08-13 17:57:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:52,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:57:52,798 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:57:52,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:52,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:57:52,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:57:52,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:52,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:52,799 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 578 predicate places. [2021-08-13 17:57:52,799 INFO L482 AbstractCegarLoop]: Abstraction has has 615 places, 365 transitions, 67276 flow [2021-08-13 17:57:52,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:52,799 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:52,799 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:52,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-13 17:57:52,799 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1129024928, now seen corresponding path program 96 times [2021-08-13 17:57:52,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:52,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721110271] [2021-08-13 17:57:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:52,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:52,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:52,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:52,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:52,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:52,834 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:52,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:52,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:52,867 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 17:57:52,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:52,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721110271] [2021-08-13 17:57:52,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721110271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:52,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:52,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:52,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864466512] [2021-08-13 17:57:52,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:52,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:52,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:52,868 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:52,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 365 transitions, 67276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:52,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:52,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:52,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:53,572 INFO L129 PetriNetUnfolder]: 0/1196 cut-off events. [2021-08-13 17:57:53,573 INFO L130 PetriNetUnfolder]: For 253956/270738 co-relation queries the response was YES. [2021-08-13 17:57:53,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35789 conditions, 1196 events. 0/1196 cut-off events. For 253956/270738 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15559 event pairs, 0 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 0. Up to 179 conditions per place. [2021-08-13 17:57:53,576 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 73 selfloop transitions, 19 changer transitions 257/364 dead transitions. [2021-08-13 17:57:53,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 364 transitions, 67782 flow [2021-08-13 17:57:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:57:53,577 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:57:53,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:57:53,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:57:53,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:53,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:57:53,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:57:53,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:53,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:53,578 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 584 predicate places. [2021-08-13 17:57:53,578 INFO L482 AbstractCegarLoop]: Abstraction has has 621 places, 364 transitions, 67782 flow [2021-08-13 17:57:53,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:53,578 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:53,578 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:53,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-13 17:57:53,579 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:53,579 INFO L82 PathProgramCache]: Analyzing trace with hash 881383642, now seen corresponding path program 97 times [2021-08-13 17:57:53,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:53,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209896546] [2021-08-13 17:57:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:53,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:53,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:53,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:53,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:53,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:53,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:53,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:53,622 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:53,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:53,637 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:53,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:53,652 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 17:57:53,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:53,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209896546] [2021-08-13 17:57:53,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209896546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:53,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:53,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:53,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608695976] [2021-08-13 17:57:53,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:53,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:53,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:53,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:53,653 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:53,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 364 transitions, 67782 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:53,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:53,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:53,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:54,402 INFO L129 PetriNetUnfolder]: 0/1195 cut-off events. [2021-08-13 17:57:54,402 INFO L130 PetriNetUnfolder]: For 309616/344368 co-relation queries the response was YES. [2021-08-13 17:57:54,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36041 conditions, 1195 events. 0/1195 cut-off events. For 309616/344368 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15535 event pairs, 0 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 0. Up to 178 conditions per place. [2021-08-13 17:57:54,406 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 15 changer transitions 262/363 dead transitions. [2021-08-13 17:57:54,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 363 transitions, 68284 flow [2021-08-13 17:57:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 17:57:54,409 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:57:54,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 17:57:54,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 17:57:54,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:54,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 17:57:54,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 17:57:54,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:54,410 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:54,410 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 590 predicate places. [2021-08-13 17:57:54,410 INFO L482 AbstractCegarLoop]: Abstraction has has 627 places, 363 transitions, 68284 flow [2021-08-13 17:57:54,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:54,411 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:54,411 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:54,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-13 17:57:54,411 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:54,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1487693460, now seen corresponding path program 98 times [2021-08-13 17:57:54,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:54,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894491906] [2021-08-13 17:57:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:54,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:54,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:54,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:54,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:54,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:54,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:54,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:54,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:54,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:54,481 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:54,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:54,501 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 17:57:54,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:54,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894491906] [2021-08-13 17:57:54,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894491906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:54,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:54,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:54,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438486288] [2021-08-13 17:57:54,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:54,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:54,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:54,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:54,503 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:54,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 363 transitions, 68284 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:54,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:54,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:54,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:55,224 INFO L129 PetriNetUnfolder]: 0/1194 cut-off events. [2021-08-13 17:57:55,224 INFO L130 PetriNetUnfolder]: For 313848/349698 co-relation queries the response was YES. [2021-08-13 17:57:55,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36291 conditions, 1194 events. 0/1194 cut-off events. For 313848/349698 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15533 event pairs, 0 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 0. Up to 177 conditions per place. [2021-08-13 17:57:55,228 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 53 selfloop transitions, 30 changer transitions 264/362 dead transitions. [2021-08-13 17:57:55,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 362 transitions, 68782 flow [2021-08-13 17:57:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:55,229 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:55,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:55,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:55,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:55,230 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:55,230 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 596 predicate places. [2021-08-13 17:57:55,230 INFO L482 AbstractCegarLoop]: Abstraction has has 633 places, 362 transitions, 68782 flow [2021-08-13 17:57:55,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:55,230 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:55,230 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:55,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-13 17:57:55,230 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:55,231 INFO L82 PathProgramCache]: Analyzing trace with hash 763424956, now seen corresponding path program 99 times [2021-08-13 17:57:55,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:55,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107982451] [2021-08-13 17:57:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:55,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:55,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:55,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:55,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:55,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:55,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:55,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:55,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:55,278 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:55,293 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 17:57:55,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:55,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107982451] [2021-08-13 17:57:55,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107982451] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:55,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:55,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:55,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785567428] [2021-08-13 17:57:55,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:55,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:55,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:55,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:55,294 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:55,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 362 transitions, 68782 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:55,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:55,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:55,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:55,966 INFO L129 PetriNetUnfolder]: 0/1193 cut-off events. [2021-08-13 17:57:55,966 INFO L130 PetriNetUnfolder]: For 259956/278238 co-relation queries the response was YES. [2021-08-13 17:57:55,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36539 conditions, 1193 events. 0/1193 cut-off events. For 259956/278238 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15503 event pairs, 0 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 0. Up to 176 conditions per place. [2021-08-13 17:57:55,969 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 51 selfloop transitions, 28 changer transitions 267/361 dead transitions. [2021-08-13 17:57:55,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 361 transitions, 69276 flow [2021-08-13 17:57:55,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:55,970 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:55,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:55,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:55,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:55,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:55,971 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 602 predicate places. [2021-08-13 17:57:55,971 INFO L482 AbstractCegarLoop]: Abstraction has has 639 places, 361 transitions, 69276 flow [2021-08-13 17:57:55,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:55,971 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:55,971 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:55,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-13 17:57:55,972 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:55,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1435909450, now seen corresponding path program 100 times [2021-08-13 17:57:55,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:55,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7013998] [2021-08-13 17:57:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:55,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:55,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:55,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:55,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:55,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:55,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:56,004 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:56,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:56,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:56,037 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 17:57:56,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:56,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7013998] [2021-08-13 17:57:56,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7013998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:56,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:56,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:56,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96268105] [2021-08-13 17:57:56,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:56,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:56,038 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:56,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 361 transitions, 69276 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:56,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:56,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:56,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:56,771 INFO L129 PetriNetUnfolder]: 0/1192 cut-off events. [2021-08-13 17:57:56,772 INFO L130 PetriNetUnfolder]: For 299732/322417 co-relation queries the response was YES. [2021-08-13 17:57:56,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36785 conditions, 1192 events. 0/1192 cut-off events. For 299732/322417 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15566 event pairs, 0 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 0. Up to 175 conditions per place. [2021-08-13 17:57:56,776 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 48 selfloop transitions, 28 changer transitions 269/360 dead transitions. [2021-08-13 17:57:56,776 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 360 transitions, 69766 flow [2021-08-13 17:57:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:56,777 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:56,777 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:56,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:56,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:56,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:56,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:56,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:56,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:56,778 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 608 predicate places. [2021-08-13 17:57:56,778 INFO L482 AbstractCegarLoop]: Abstraction has has 645 places, 360 transitions, 69766 flow [2021-08-13 17:57:56,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:56,778 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:56,779 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:56,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-13 17:57:56,779 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1872054514, now seen corresponding path program 101 times [2021-08-13 17:57:56,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:56,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637162788] [2021-08-13 17:57:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:56,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:56,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:56,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:56,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:56,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:56,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:56,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:56,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:56,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:56,829 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:56,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:56,846 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 17:57:56,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:56,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637162788] [2021-08-13 17:57:56,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637162788] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:56,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:56,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:56,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722984137] [2021-08-13 17:57:56,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:56,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:56,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:56,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:56,847 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:56,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 360 transitions, 69766 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:56,848 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:56,848 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:56,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:57,605 INFO L129 PetriNetUnfolder]: 0/1191 cut-off events. [2021-08-13 17:57:57,606 INFO L130 PetriNetUnfolder]: For 302566/325821 co-relation queries the response was YES. [2021-08-13 17:57:57,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37029 conditions, 1191 events. 0/1191 cut-off events. For 302566/325821 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15531 event pairs, 0 based on Foata normal form. 1/1172 useless extension candidates. Maximal degree in co-relation 0. Up to 174 conditions per place. [2021-08-13 17:57:57,609 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 47 selfloop transitions, 26 changer transitions 271/359 dead transitions. [2021-08-13 17:57:57,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 359 transitions, 70252 flow [2021-08-13 17:57:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:57,610 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:57,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:57,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:57,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:57,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:57,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:57,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:57,617 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:57,617 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 614 predicate places. [2021-08-13 17:57:57,617 INFO L482 AbstractCegarLoop]: Abstraction has has 651 places, 359 transitions, 70252 flow [2021-08-13 17:57:57,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:57,617 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:57,617 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:57,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-13 17:57:57,617 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:57,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:57,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1491977186, now seen corresponding path program 102 times [2021-08-13 17:57:57,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:57,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694852192] [2021-08-13 17:57:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:57,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:57,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:57,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:57,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:57,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:57,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:57,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:57:57,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:57:57,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:57,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:57,688 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 17:57:57,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:57,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694852192] [2021-08-13 17:57:57,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694852192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:57,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:57,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:57,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152325195] [2021-08-13 17:57:57,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:57,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:57,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:57,690 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:57,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 359 transitions, 70252 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:57,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:57,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:57,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:58,369 INFO L129 PetriNetUnfolder]: 0/1190 cut-off events. [2021-08-13 17:57:58,370 INFO L130 PetriNetUnfolder]: For 300080/325693 co-relation queries the response was YES. [2021-08-13 17:57:58,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37271 conditions, 1190 events. 0/1190 cut-off events. For 300080/325693 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15471 event pairs, 0 based on Foata normal form. 1/1171 useless extension candidates. Maximal degree in co-relation 0. Up to 173 conditions per place. [2021-08-13 17:57:58,373 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 44 selfloop transitions, 25 changer transitions 274/358 dead transitions. [2021-08-13 17:57:58,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 358 transitions, 70734 flow [2021-08-13 17:57:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:58,374 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:58,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:58,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:58,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:58,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:58,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:58,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:58,374 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:58,375 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 620 predicate places. [2021-08-13 17:57:58,375 INFO L482 AbstractCegarLoop]: Abstraction has has 657 places, 358 transitions, 70734 flow [2021-08-13 17:57:58,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:58,375 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:58,375 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:58,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-13 17:57:58,375 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:58,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:58,375 INFO L82 PathProgramCache]: Analyzing trace with hash -89067824, now seen corresponding path program 103 times [2021-08-13 17:57:58,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:58,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572994825] [2021-08-13 17:57:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:58,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:58,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:58,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:58,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:58,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:58,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:58,395 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:58,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:58,407 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:58,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:58,422 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:58,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:58,436 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 17:57:58,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:58,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572994825] [2021-08-13 17:57:58,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572994825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:58,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:58,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:58,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664429102] [2021-08-13 17:57:58,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:58,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:58,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:58,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:58,438 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:58,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 358 transitions, 70734 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:58,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:58,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:58,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:59,100 INFO L129 PetriNetUnfolder]: 0/1189 cut-off events. [2021-08-13 17:57:59,100 INFO L130 PetriNetUnfolder]: For 302687/329066 co-relation queries the response was YES. [2021-08-13 17:57:59,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37511 conditions, 1189 events. 0/1189 cut-off events. For 302687/329066 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15491 event pairs, 0 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 0. Up to 172 conditions per place. [2021-08-13 17:57:59,104 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 43 selfloop transitions, 22 changer transitions 277/357 dead transitions. [2021-08-13 17:57:59,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 357 transitions, 71212 flow [2021-08-13 17:57:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:59,105 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:59,105 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:59,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:59,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:59,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:59,105 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 626 predicate places. [2021-08-13 17:57:59,105 INFO L482 AbstractCegarLoop]: Abstraction has has 663 places, 357 transitions, 71212 flow [2021-08-13 17:57:59,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:59,106 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:59,106 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:59,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-13 17:57:59,106 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1882833790, now seen corresponding path program 104 times [2021-08-13 17:57:59,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:59,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860922452] [2021-08-13 17:57:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:59,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:59,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:59,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:59,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:59,144 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:59,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:59,156 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:57:59,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:57:59,173 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:57:59,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:57:59,189 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 17:57:59,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:59,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860922452] [2021-08-13 17:57:59,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860922452] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:59,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:59,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:57:59,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629737737] [2021-08-13 17:57:59,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:57:59,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:57:59,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:57:59,190 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:57:59,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 357 transitions, 71212 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:59,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:59,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:57:59,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:59,957 INFO L129 PetriNetUnfolder]: 0/1188 cut-off events. [2021-08-13 17:57:59,957 INFO L130 PetriNetUnfolder]: For 305224/332369 co-relation queries the response was YES. [2021-08-13 17:57:59,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37749 conditions, 1188 events. 0/1188 cut-off events. For 305224/332369 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15513 event pairs, 0 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 0. Up to 171 conditions per place. [2021-08-13 17:57:59,961 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 39 selfloop transitions, 23 changer transitions 279/356 dead transitions. [2021-08-13 17:57:59,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 356 transitions, 71686 flow [2021-08-13 17:57:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:57:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:57:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:57:59,961 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:57:59,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:59,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:57:59,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:57:59,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:59,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:57:59,962 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 632 predicate places. [2021-08-13 17:57:59,962 INFO L482 AbstractCegarLoop]: Abstraction has has 669 places, 356 transitions, 71686 flow [2021-08-13 17:57:59,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:57:59,962 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:59,963 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:59,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-13 17:57:59,963 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:57:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash 851864614, now seen corresponding path program 105 times [2021-08-13 17:57:59,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:59,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110712859] [2021-08-13 17:57:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:59,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:59,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:59,986 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:57:59,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:00,005 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:00,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:00,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:00,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:00,038 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 17:58:00,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:00,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110712859] [2021-08-13 17:58:00,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110712859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:00,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:00,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:00,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60867897] [2021-08-13 17:58:00,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:00,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:00,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:00,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:00,040 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:00,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 356 transitions, 71686 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:00,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:00,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:00,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:00,686 INFO L129 PetriNetUnfolder]: 0/1187 cut-off events. [2021-08-13 17:58:00,686 INFO L130 PetriNetUnfolder]: For 275380/299352 co-relation queries the response was YES. [2021-08-13 17:58:00,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37985 conditions, 1187 events. 0/1187 cut-off events. For 275380/299352 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15492 event pairs, 0 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 0. Up to 170 conditions per place. [2021-08-13 17:58:00,689 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 37 selfloop transitions, 22 changer transitions 281/355 dead transitions. [2021-08-13 17:58:00,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 355 transitions, 72156 flow [2021-08-13 17:58:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:00,690 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:00,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:00,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:00,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:00,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:00,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:00,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:00,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:00,691 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 638 predicate places. [2021-08-13 17:58:00,691 INFO L482 AbstractCegarLoop]: Abstraction has has 675 places, 355 transitions, 72156 flow [2021-08-13 17:58:00,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:00,691 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:00,691 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:00,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-13 17:58:00,691 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash -186256416, now seen corresponding path program 106 times [2021-08-13 17:58:00,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:00,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520734775] [2021-08-13 17:58:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:00,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:00,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:00,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:58:00,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:58:00,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:00,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:00,724 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:00,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:00,738 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:00,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:00,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:00,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520734775] [2021-08-13 17:58:00,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520734775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:00,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:00,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:00,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926981465] [2021-08-13 17:58:00,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:00,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:00,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:00,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:00,756 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:00,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 355 transitions, 72156 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:00,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:00,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:00,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:01,420 INFO L129 PetriNetUnfolder]: 0/1186 cut-off events. [2021-08-13 17:58:01,421 INFO L130 PetriNetUnfolder]: For 276842/301514 co-relation queries the response was YES. [2021-08-13 17:58:01,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38219 conditions, 1186 events. 0/1186 cut-off events. For 276842/301514 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15492 event pairs, 0 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 0. Up to 169 conditions per place. [2021-08-13 17:58:01,424 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 36 selfloop transitions, 18 changer transitions 285/354 dead transitions. [2021-08-13 17:58:01,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 354 transitions, 72622 flow [2021-08-13 17:58:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:01,425 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:01,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:01,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:01,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:01,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:01,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:01,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:01,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:01,427 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 644 predicate places. [2021-08-13 17:58:01,427 INFO L482 AbstractCegarLoop]: Abstraction has has 681 places, 354 transitions, 72622 flow [2021-08-13 17:58:01,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:01,427 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:01,427 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:01,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-13 17:58:01,427 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1272194256, now seen corresponding path program 107 times [2021-08-13 17:58:01,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:01,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044950710] [2021-08-13 17:58:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:01,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:01,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:01,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:01,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:01,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:01,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:01,481 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:01,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:01,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:01,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044950710] [2021-08-13 17:58:01,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044950710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:01,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:01,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:01,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309431433] [2021-08-13 17:58:01,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:01,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:01,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:01,499 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:01,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 354 transitions, 72622 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:01,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:01,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:01,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:02,322 INFO L129 PetriNetUnfolder]: 0/1185 cut-off events. [2021-08-13 17:58:02,322 INFO L130 PetriNetUnfolder]: For 312385/341828 co-relation queries the response was YES. [2021-08-13 17:58:02,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38451 conditions, 1185 events. 0/1185 cut-off events. For 312385/341828 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15438 event pairs, 0 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 0. Up to 168 conditions per place. [2021-08-13 17:58:02,325 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 32 selfloop transitions, 19 changer transitions 287/353 dead transitions. [2021-08-13 17:58:02,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 353 transitions, 73084 flow [2021-08-13 17:58:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:02,326 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:02,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:02,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:02,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:02,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:02,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:02,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:02,327 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:02,327 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 650 predicate places. [2021-08-13 17:58:02,327 INFO L482 AbstractCegarLoop]: Abstraction has has 687 places, 353 transitions, 73084 flow [2021-08-13 17:58:02,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:02,327 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:02,327 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:02,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-13 17:58:02,328 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:02,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:02,328 INFO L82 PathProgramCache]: Analyzing trace with hash -2023763794, now seen corresponding path program 108 times [2021-08-13 17:58:02,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:02,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2934916] [2021-08-13 17:58:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:02,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:02,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:02,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:02,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:02,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:02,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:02,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:02,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:02,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:02,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:02,370 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:02,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:02,383 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 17:58:02,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:02,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2934916] [2021-08-13 17:58:02,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2934916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:02,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:02,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:02,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151035435] [2021-08-13 17:58:02,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:02,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:02,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:02,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:02,385 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:02,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 353 transitions, 73084 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:02,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:02,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:02,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:03,032 INFO L129 PetriNetUnfolder]: 0/1184 cut-off events. [2021-08-13 17:58:03,032 INFO L130 PetriNetUnfolder]: For 314612/344821 co-relation queries the response was YES. [2021-08-13 17:58:03,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38681 conditions, 1184 events. 0/1184 cut-off events. For 314612/344821 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15435 event pairs, 0 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 0. Up to 167 conditions per place. [2021-08-13 17:58:03,035 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 30 selfloop transitions, 18 changer transitions 289/352 dead transitions. [2021-08-13 17:58:03,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 352 transitions, 73542 flow [2021-08-13 17:58:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:03,037 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:03,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:03,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:03,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:03,037 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:03,037 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 656 predicate places. [2021-08-13 17:58:03,037 INFO L482 AbstractCegarLoop]: Abstraction has has 693 places, 352 transitions, 73542 flow [2021-08-13 17:58:03,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:03,038 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:03,038 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:03,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-13 17:58:03,038 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:03,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2030875056, now seen corresponding path program 109 times [2021-08-13 17:58:03,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:03,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575009952] [2021-08-13 17:58:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:03,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:03,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:03,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:03,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:03,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:03,075 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:03,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:03,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:03,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:03,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:03,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575009952] [2021-08-13 17:58:03,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575009952] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:03,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:03,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:03,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662148971] [2021-08-13 17:58:03,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:03,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:03,107 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:03,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 352 transitions, 73542 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:03,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:03,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:03,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:03,825 INFO L129 PetriNetUnfolder]: 0/1183 cut-off events. [2021-08-13 17:58:03,825 INFO L130 PetriNetUnfolder]: For 316754/347729 co-relation queries the response was YES. [2021-08-13 17:58:03,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38909 conditions, 1183 events. 0/1183 cut-off events. For 316754/347729 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15442 event pairs, 0 based on Foata normal form. 1/1164 useless extension candidates. Maximal degree in co-relation 0. Up to 166 conditions per place. [2021-08-13 17:58:03,829 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 26 selfloop transitions, 19 changer transitions 291/351 dead transitions. [2021-08-13 17:58:03,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 351 transitions, 73996 flow [2021-08-13 17:58:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:03,830 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:03,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:03,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:03,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:03,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:03,831 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:03,832 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 662 predicate places. [2021-08-13 17:58:03,832 INFO L482 AbstractCegarLoop]: Abstraction has has 699 places, 351 transitions, 73996 flow [2021-08-13 17:58:03,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:03,832 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:03,832 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:03,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-13 17:58:03,832 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash 951203972, now seen corresponding path program 110 times [2021-08-13 17:58:03,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:03,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898190093] [2021-08-13 17:58:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:03,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:03,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:03,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:03,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:03,853 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:03,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:03,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:03,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:03,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:03,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:03,893 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 17:58:03,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:03,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898190093] [2021-08-13 17:58:03,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898190093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:03,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:03,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:03,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722348897] [2021-08-13 17:58:03,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:03,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:03,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:03,895 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:03,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 351 transitions, 73996 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:03,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:03,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:03,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:04,730 INFO L129 PetriNetUnfolder]: 0/1182 cut-off events. [2021-08-13 17:58:04,730 INFO L130 PetriNetUnfolder]: For 324202/352587 co-relation queries the response was YES. [2021-08-13 17:58:04,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39135 conditions, 1182 events. 0/1182 cut-off events. For 324202/352587 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15442 event pairs, 0 based on Foata normal form. 1/1163 useless extension candidates. Maximal degree in co-relation 0. Up to 165 conditions per place. [2021-08-13 17:58:04,734 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 24 selfloop transitions, 17 changer transitions 294/350 dead transitions. [2021-08-13 17:58:04,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 350 transitions, 74446 flow [2021-08-13 17:58:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:04,734 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:04,735 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:04,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:04,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:04,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:04,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:04,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:04,735 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:04,735 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 668 predicate places. [2021-08-13 17:58:04,735 INFO L482 AbstractCegarLoop]: Abstraction has has 705 places, 350 transitions, 74446 flow [2021-08-13 17:58:04,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:04,735 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:04,736 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:04,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-13 17:58:04,736 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:04,736 INFO L82 PathProgramCache]: Analyzing trace with hash 64509308, now seen corresponding path program 111 times [2021-08-13 17:58:04,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:04,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732363476] [2021-08-13 17:58:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:04,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:04,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:04,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:04,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:04,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:04,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:04,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:58:04,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:58:04,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:04,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:04,785 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:04,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:04,800 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 17:58:04,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:04,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732363476] [2021-08-13 17:58:04,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732363476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:04,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:04,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:04,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295944373] [2021-08-13 17:58:04,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:04,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:04,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:04,801 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:04,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 350 transitions, 74446 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:04,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:04,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:04,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:05,465 INFO L129 PetriNetUnfolder]: 0/1181 cut-off events. [2021-08-13 17:58:05,465 INFO L130 PetriNetUnfolder]: For 326121/355076 co-relation queries the response was YES. [2021-08-13 17:58:05,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39359 conditions, 1181 events. 0/1181 cut-off events. For 326121/355076 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15453 event pairs, 0 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 0. Up to 164 conditions per place. [2021-08-13 17:58:05,468 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 23 selfloop transitions, 14 changer transitions 297/349 dead transitions. [2021-08-13 17:58:05,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 711 places, 349 transitions, 74892 flow [2021-08-13 17:58:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:05,469 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:05,469 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:05,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:05,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:05,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:05,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:05,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:05,469 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:05,470 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 674 predicate places. [2021-08-13 17:58:05,470 INFO L482 AbstractCegarLoop]: Abstraction has has 711 places, 349 transitions, 74892 flow [2021-08-13 17:58:05,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:05,470 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:05,470 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:05,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-13 17:58:05,470 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash -838078290, now seen corresponding path program 112 times [2021-08-13 17:58:05,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:05,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564380392] [2021-08-13 17:58:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:05,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:05,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:05,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:05,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:05,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:05,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:05,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:05,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:05,518 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:05,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:05,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:05,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564380392] [2021-08-13 17:58:05,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564380392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:05,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:05,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:05,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64512870] [2021-08-13 17:58:05,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:05,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:05,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:05,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:05,540 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:05,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 349 transitions, 74892 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:05,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:05,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:05,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:06,231 INFO L129 PetriNetUnfolder]: 0/1180 cut-off events. [2021-08-13 17:58:06,231 INFO L130 PetriNetUnfolder]: For 275660/300442 co-relation queries the response was YES. [2021-08-13 17:58:06,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39581 conditions, 1180 events. 0/1180 cut-off events. For 275660/300442 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15396 event pairs, 0 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 0. Up to 163 conditions per place. [2021-08-13 17:58:06,234 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 22 selfloop transitions, 11 changer transitions 300/348 dead transitions. [2021-08-13 17:58:06,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 348 transitions, 75334 flow [2021-08-13 17:58:06,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:06,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:58:06,235 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:58:06,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:58:06,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:58:06,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:06,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:58:06,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:58:06,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:06,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:06,236 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 680 predicate places. [2021-08-13 17:58:06,236 INFO L482 AbstractCegarLoop]: Abstraction has has 717 places, 348 transitions, 75334 flow [2021-08-13 17:58:06,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:06,236 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:06,236 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:06,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-13 17:58:06,236 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:06,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1283995662, now seen corresponding path program 113 times [2021-08-13 17:58:06,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:06,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719139272] [2021-08-13 17:58:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:06,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:06,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:06,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:06,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:06,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:06,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:06,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:06,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:06,278 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:06,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:06,295 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:06,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:06,310 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 17:58:06,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:06,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719139272] [2021-08-13 17:58:06,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719139272] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:06,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:06,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:06,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959851531] [2021-08-13 17:58:06,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:06,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:06,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:06,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:06,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:06,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 348 transitions, 75334 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:06,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:06,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:06,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:07,131 INFO L129 PetriNetUnfolder]: 0/1179 cut-off events. [2021-08-13 17:58:07,132 INFO L130 PetriNetUnfolder]: For 316164/345913 co-relation queries the response was YES. [2021-08-13 17:58:07,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39801 conditions, 1179 events. 0/1179 cut-off events. For 316164/345913 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15416 event pairs, 0 based on Foata normal form. 1/1160 useless extension candidates. Maximal degree in co-relation 0. Up to 162 conditions per place. [2021-08-13 17:58:07,135 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 20 selfloop transitions, 8 changer transitions 304/347 dead transitions. [2021-08-13 17:58:07,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 347 transitions, 75772 flow [2021-08-13 17:58:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:58:07,135 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:58:07,136 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:58:07,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:58:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:07,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:58:07,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:58:07,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:07,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:07,136 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 686 predicate places. [2021-08-13 17:58:07,136 INFO L482 AbstractCegarLoop]: Abstraction has has 723 places, 347 transitions, 75772 flow [2021-08-13 17:58:07,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:07,136 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:07,137 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:07,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-13 17:58:07,137 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:07,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:07,137 INFO L82 PathProgramCache]: Analyzing trace with hash -419501384, now seen corresponding path program 114 times [2021-08-13 17:58:07,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:07,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962327612] [2021-08-13 17:58:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:07,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:07,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:07,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:07,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:07,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:07,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:07,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:07,188 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:07,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:07,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:07,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962327612] [2021-08-13 17:58:07,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962327612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:07,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:07,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:07,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488621223] [2021-08-13 17:58:07,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:07,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:07,206 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:07,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 347 transitions, 75772 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:07,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:07,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:07,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:08,016 INFO L129 PetriNetUnfolder]: 0/1178 cut-off events. [2021-08-13 17:58:08,017 INFO L130 PetriNetUnfolder]: For 317467/347782 co-relation queries the response was YES. [2021-08-13 17:58:08,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40019 conditions, 1178 events. 0/1178 cut-off events. For 317467/347782 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15407 event pairs, 0 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 0. Up to 161 conditions per place. [2021-08-13 17:58:08,020 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 15 selfloop transitions, 10 changer transitions 306/346 dead transitions. [2021-08-13 17:58:08,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 346 transitions, 76206 flow [2021-08-13 17:58:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:08,020 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:08,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:08,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:08,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:08,021 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:08,021 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 692 predicate places. [2021-08-13 17:58:08,021 INFO L482 AbstractCegarLoop]: Abstraction has has 729 places, 346 transitions, 76206 flow [2021-08-13 17:58:08,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:08,021 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:08,021 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:08,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-13 17:58:08,022 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:08,022 INFO L82 PathProgramCache]: Analyzing trace with hash 188174982, now seen corresponding path program 115 times [2021-08-13 17:58:08,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:08,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831438549] [2021-08-13 17:58:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:08,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:08,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:08,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:08,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:08,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:08,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:08,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:08,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:08,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:58:08,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831438549] [2021-08-13 17:58:08,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831438549] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:08,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:08,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881917340] [2021-08-13 17:58:08,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:08,079 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:08,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 346 transitions, 76206 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:08,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:08,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:08,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:08,871 INFO L129 PetriNetUnfolder]: 0/1177 cut-off events. [2021-08-13 17:58:08,872 INFO L130 PetriNetUnfolder]: For 276452/302734 co-relation queries the response was YES. [2021-08-13 17:58:08,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40235 conditions, 1177 events. 0/1177 cut-off events. For 276452/302734 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15410 event pairs, 0 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 0. Up to 160 conditions per place. [2021-08-13 17:58:08,875 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 12 selfloop transitions, 10 changer transitions 308/345 dead transitions. [2021-08-13 17:58:08,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 345 transitions, 76636 flow [2021-08-13 17:58:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:08,876 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:08,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:08,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:08,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:08,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:08,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:08,877 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 698 predicate places. [2021-08-13 17:58:08,877 INFO L482 AbstractCegarLoop]: Abstraction has has 735 places, 345 transitions, 76636 flow [2021-08-13 17:58:08,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:08,877 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:08,877 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:08,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-13 17:58:08,877 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:08,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:08,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2004445922, now seen corresponding path program 116 times [2021-08-13 17:58:08,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:08,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056478234] [2021-08-13 17:58:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:08,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:08,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:08,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:08,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:08,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 17:58:08,903 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:08,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:08,917 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:08,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:08,931 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 17:58:08,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:08,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056478234] [2021-08-13 17:58:08,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056478234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:08,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:08,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:08,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574622298] [2021-08-13 17:58:08,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:08,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:08,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:08,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:08,931 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:08,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 345 transitions, 76636 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:08,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:08,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:08,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:09,905 INFO L129 PetriNetUnfolder]: 0/1176 cut-off events. [2021-08-13 17:58:09,905 INFO L130 PetriNetUnfolder]: For 334036/365841 co-relation queries the response was YES. [2021-08-13 17:58:09,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40449 conditions, 1176 events. 0/1176 cut-off events. For 334036/365841 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15389 event pairs, 0 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 0. Up to 159 conditions per place. [2021-08-13 17:58:09,908 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 12 selfloop transitions, 6 changer transitions 311/344 dead transitions. [2021-08-13 17:58:09,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 344 transitions, 77062 flow [2021-08-13 17:58:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2021-08-13 17:58:09,909 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9077380952380952 [2021-08-13 17:58:09,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 305 transitions. [2021-08-13 17:58:09,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 305 transitions. [2021-08-13 17:58:09,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:09,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 305 transitions. [2021-08-13 17:58:09,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 17:58:09,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:09,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:09,910 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 704 predicate places. [2021-08-13 17:58:09,910 INFO L482 AbstractCegarLoop]: Abstraction has has 741 places, 344 transitions, 77062 flow [2021-08-13 17:58:09,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:09,910 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:09,910 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:09,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-13 17:58:09,910 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1483333798, now seen corresponding path program 117 times [2021-08-13 17:58:09,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:09,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161458176] [2021-08-13 17:58:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:09,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:09,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:09,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:09,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:09,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:09,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:09,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:09,957 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:09,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:09,971 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 17:58:09,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:09,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161458176] [2021-08-13 17:58:09,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161458176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:09,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:09,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:09,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74890673] [2021-08-13 17:58:09,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:09,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:09,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:09,973 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:09,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 741 places, 344 transitions, 77062 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:09,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:09,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:09,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:10,765 INFO L129 PetriNetUnfolder]: 0/1175 cut-off events. [2021-08-13 17:58:10,765 INFO L130 PetriNetUnfolder]: For 335262/367637 co-relation queries the response was YES. [2021-08-13 17:58:10,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40661 conditions, 1175 events. 0/1175 cut-off events. For 335262/367637 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 15368 event pairs, 0 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 0. Up to 158 conditions per place. [2021-08-13 17:58:10,768 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 7 selfloop transitions, 7 changer transitions 314/343 dead transitions. [2021-08-13 17:58:10,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 343 transitions, 77484 flow [2021-08-13 17:58:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 306 transitions. [2021-08-13 17:58:10,769 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2021-08-13 17:58:10,769 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 306 transitions. [2021-08-13 17:58:10,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 306 transitions. [2021-08-13 17:58:10,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:10,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 306 transitions. [2021-08-13 17:58:10,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.714285714285715) internal successors, (306), 7 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 17:58:10,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:10,770 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:10,770 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 710 predicate places. [2021-08-13 17:58:10,770 INFO L482 AbstractCegarLoop]: Abstraction has has 747 places, 343 transitions, 77484 flow [2021-08-13 17:58:10,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:10,770 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:10,771 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:10,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-13 17:58:10,771 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 532744562, now seen corresponding path program 118 times [2021-08-13 17:58:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:10,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64464372] [2021-08-13 17:58:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:10,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:10,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:10,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:10,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:10,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:58:10,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:58:10,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:10,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:10,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:10,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:10,828 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 17:58:10,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:10,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64464372] [2021-08-13 17:58:10,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64464372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:10,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:10,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:10,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995498403] [2021-08-13 17:58:10,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:10,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:10,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:10,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:10,829 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:10,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 343 transitions, 77484 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:10,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:10,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:10,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:11,653 INFO L129 PetriNetUnfolder]: 0/1174 cut-off events. [2021-08-13 17:58:11,653 INFO L130 PetriNetUnfolder]: For 331712/369581 co-relation queries the response was YES. [2021-08-13 17:58:11,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40871 conditions, 1174 events. 0/1174 cut-off events. For 331712/369581 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15373 event pairs, 0 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 0. Up to 157 conditions per place. [2021-08-13 17:58:11,656 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 6 selfloop transitions, 3 changer transitions 318/342 dead transitions. [2021-08-13 17:58:11,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 342 transitions, 77902 flow [2021-08-13 17:58:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 17:58:11,657 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:58:11,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 17:58:11,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 17:58:11,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:11,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 17:58:11,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 17:58:11,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:11,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:11,658 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 716 predicate places. [2021-08-13 17:58:11,658 INFO L482 AbstractCegarLoop]: Abstraction has has 753 places, 342 transitions, 77902 flow [2021-08-13 17:58:11,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:11,658 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:11,658 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:11,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-13 17:58:11,659 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1698629498, now seen corresponding path program 119 times [2021-08-13 17:58:11,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:11,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246705397] [2021-08-13 17:58:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:11,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:11,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:11,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:11,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:11,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:11,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:11,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:11,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:11,696 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 17:58:11,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 17:58:11,710 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:11,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:11,724 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 17:58:11,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:11,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246705397] [2021-08-13 17:58:11,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246705397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:11,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:11,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521397332] [2021-08-13 17:58:11,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:11,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:11,725 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:11,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 342 transitions, 77902 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:11,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:11,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:11,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:12,827 INFO L129 PetriNetUnfolder]: 0/1173 cut-off events. [2021-08-13 17:58:12,827 INFO L130 PetriNetUnfolder]: For 286293/320065 co-relation queries the response was YES. [2021-08-13 17:58:12,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41079 conditions, 1173 events. 0/1173 cut-off events. For 286293/320065 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15343 event pairs, 0 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 0. Up to 156 conditions per place. [2021-08-13 17:58:12,830 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 2 selfloop transitions, 4 changer transitions 320/341 dead transitions. [2021-08-13 17:58:12,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 341 transitions, 78316 flow [2021-08-13 17:58:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2021-08-13 17:58:12,831 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:58:12,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 304 transitions. [2021-08-13 17:58:12,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 304 transitions. [2021-08-13 17:58:12,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:12,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 304 transitions. [2021-08-13 17:58:12,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 17:58:12,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:12,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:12,832 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 722 predicate places. [2021-08-13 17:58:12,832 INFO L482 AbstractCegarLoop]: Abstraction has has 759 places, 341 transitions, 78316 flow [2021-08-13 17:58:12,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:12,832 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:58:12,832 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:58:12,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-13 17:58:12,832 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 17:58:12,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:58:12,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1754188542, now seen corresponding path program 120 times [2021-08-13 17:58:12,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:58:12,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602820895] [2021-08-13 17:58:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:58:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:58:12,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:58:12,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:58:12,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:58:12,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:58:12,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 17:58:12,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 17:58:12,880 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 17:58:12,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 17:58:12,895 INFO L142 QuantifierPusher]: treesize reduction 36, result has 47.8 percent of original size [2021-08-13 17:58:12,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-08-13 17:58:12,909 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 17:58:12,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:58:12,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602820895] [2021-08-13 17:58:12,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602820895] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:58:12,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:58:12,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 17:58:12,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058747599] [2021-08-13 17:58:12,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 17:58:12,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:58:12,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 17:58:12,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-13 17:58:12,911 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 48 [2021-08-13 17:58:12,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 341 transitions, 78316 flow. Second operand has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:12,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:58:12,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 48 [2021-08-13 17:58:12,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:58:13,998 INFO L129 PetriNetUnfolder]: 0/1172 cut-off events. [2021-08-13 17:58:13,998 INFO L130 PetriNetUnfolder]: For 333848/373249 co-relation queries the response was YES. [2021-08-13 17:58:13,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41285 conditions, 1172 events. 0/1172 cut-off events. For 333848/373249 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 15385 event pairs, 0 based on Foata normal form. 1/1153 useless extension candidates. Maximal degree in co-relation 0. Up to 155 conditions per place. [2021-08-13 17:58:14,001 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 0 selfloop transitions, 0 changer transitions 340/340 dead transitions. [2021-08-13 17:58:14,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 340 transitions, 78726 flow [2021-08-13 17:58:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 17:58:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 17:58:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2021-08-13 17:58:14,001 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2021-08-13 17:58:14,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 303 transitions. [2021-08-13 17:58:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 303 transitions. [2021-08-13 17:58:14,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:58:14,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 303 transitions. [2021-08-13 17:58:14,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 43.285714285714285) internal successors, (303), 7 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 17:58:14,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:14,002 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 17:58:14,002 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 727 predicate places. [2021-08-13 17:58:14,002 INFO L482 AbstractCegarLoop]: Abstraction has has 764 places, 340 transitions, 78726 flow [2021-08-13 17:58:14,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 17:58:14,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown