/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 08:29:41,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 08:29:41,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 08:29:41,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 08:29:41,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 08:29:41,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 08:29:41,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 08:29:41,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 08:29:41,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 08:29:41,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 08:29:41,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 08:29:41,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 08:29:41,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 08:29:41,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 08:29:41,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 08:29:41,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 08:29:41,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 08:29:41,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 08:29:41,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 08:29:41,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 08:29:41,487 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.epf [2021-08-13 08:29:41,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 08:29:41,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 08:29:41,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 08:29:41,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 08:29:41,524 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 08:29:41,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 08:29:41,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 08:29:41,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 08:29:41,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 08:29:41,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:29:41,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 08:29:41,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 08:29:41,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 08:29:41,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 08:29:41,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 08:29:41,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 08:29:41,777 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 08:29:41,778 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 08:29:41,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl [2021-08-13 08:29:41,779 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl' [2021-08-13 08:29:41,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 08:29:41,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 08:29:41,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 08:29:41,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 08:29:41,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 08:29:41,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 08:29:41,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 08:29:41,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 08:29:41,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 08:29:41,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/1) ... [2021-08-13 08:29:41,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 08:29:41,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 08:29:41,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 08:29:41,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 08:29:41,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (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 08:29:41,883 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 08:29:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 08:29:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 08:29:41,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 08:29:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 08:29:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 08:29:41,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 08:29:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 08:29:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 08:29:41,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 08:29:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 08:29:41,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 08:29:41,885 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 08:29:42,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 08:29:42,096 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 08:29:42,098 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:29:42 BoogieIcfgContainer [2021-08-13 08:29:42,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 08:29:42,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 08:29:42,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 08:29:42,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 08:29:42,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:29:41" (1/2) ... [2021-08-13 08:29:42,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eea4c28 and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 08:29:42, skipping insertion in model container [2021-08-13 08:29:42,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:29:42" (2/2) ... [2021-08-13 08:29:42,103 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl [2021-08-13 08:29:42,106 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 08:29:42,107 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 08:29:42,107 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 08:29:42,148 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-13 08:29:42,166 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 08:29:42,183 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 08:29:42,184 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 08:29:42,184 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 08:29:42,184 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 08:29:42,184 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 08:29:42,184 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 08:29:42,184 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 08:29:42,184 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 08:29:42,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 84 flow [2021-08-13 08:29:42,213 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-08-13 08:29:42,213 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 08:29:42,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 0/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 08:29:42,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 30 transitions, 84 flow [2021-08-13 08:29:42,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2021-08-13 08:29:42,228 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-08-13 08:29:42,229 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 08:29:42,229 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:42,230 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, 1, 1, 1, 1] [2021-08-13 08:29:42,230 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:42,250 INFO L82 PathProgramCache]: Analyzing trace with hash 928567053, now seen corresponding path program 1 times [2021-08-13 08:29:42,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:42,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677219107] [2021-08-13 08:29:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:42,421 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 08:29:42,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 08:29:42,457 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-08-13 08:29:42,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-13 08:29:42,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 08:29:42,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:42,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 08:29:42,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:42,487 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 08:29:42,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:42,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677219107] [2021-08-13 08:29:42,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677219107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:42,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:42,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:42,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174803289] [2021-08-13 08:29:42,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:42,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:42,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:42,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:42,506 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 30 [2021-08-13 08:29:42,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 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 08:29:42,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:42,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 30 [2021-08-13 08:29:42,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:42,562 INFO L129 PetriNetUnfolder]: 43/165 cut-off events. [2021-08-13 08:29:42,562 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-13 08:29:42,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 165 events. 43/165 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 803 event pairs, 18 based on Foata normal form. 1/165 useless extension candidates. Maximal degree in co-relation 255. Up to 54 conditions per place. [2021-08-13 08:29:42,566 INFO L132 encePairwiseOnDemand]: 21/30 looper letters, 13 selfloop transitions, 7 changer transitions 1/37 dead transitions. [2021-08-13 08:29:42,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 134 flow [2021-08-13 08:29:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:29:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:29:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2021-08-13 08:29:42,575 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2021-08-13 08:29:42,575 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 122 transitions. [2021-08-13 08:29:42,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 122 transitions. [2021-08-13 08:29:42,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:42,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 122 transitions. [2021-08-13 08:29:42,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,583 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2021-08-13 08:29:42,583 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 134 flow [2021-08-13 08:29:42,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 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 08:29:42,583 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:42,583 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, 1, 1, 1, 1] [2021-08-13 08:29:42,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 08:29:42,584 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:42,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1387160825, now seen corresponding path program 2 times [2021-08-13 08:29:42,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:42,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968372616] [2021-08-13 08:29:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:42,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:42,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:42,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:42,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:42,621 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 08:29:42,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:42,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968372616] [2021-08-13 08:29:42,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968372616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:42,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:42,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30156110] [2021-08-13 08:29:42,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:42,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:42,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:42,624 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:42,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:42,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:42,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:42,812 INFO L129 PetriNetUnfolder]: 270/670 cut-off events. [2021-08-13 08:29:42,812 INFO L130 PetriNetUnfolder]: For 137/142 co-relation queries the response was YES. [2021-08-13 08:29:42,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 670 events. 270/670 cut-off events. For 137/142 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4316 event pairs, 80 based on Foata normal form. 10/659 useless extension candidates. Maximal degree in co-relation 1383. Up to 197 conditions per place. [2021-08-13 08:29:42,825 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 22 changer transitions 0/67 dead transitions. [2021-08-13 08:29:42,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 316 flow [2021-08-13 08:29:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 08:29:42,831 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 08:29:42,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 08:29:42,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 08:29:42,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:42,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 08:29:42,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,840 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2021-08-13 08:29:42,841 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 316 flow [2021-08-13 08:29:42,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,841 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:42,841 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, 1, 1, 1, 1] [2021-08-13 08:29:42,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 08:29:42,841 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2079240233, now seen corresponding path program 3 times [2021-08-13 08:29:42,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:42,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830520289] [2021-08-13 08:29:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:42,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:42,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:42,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:42,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:42,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:42,879 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 08:29:42,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:42,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830520289] [2021-08-13 08:29:42,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830520289] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:42,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:42,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:29:42,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502291092] [2021-08-13 08:29:42,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:29:42,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:42,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:29:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:29:42,881 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:42,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:42,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:42,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:42,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,017 INFO L129 PetriNetUnfolder]: 275/701 cut-off events. [2021-08-13 08:29:43,018 INFO L130 PetriNetUnfolder]: For 355/403 co-relation queries the response was YES. [2021-08-13 08:29:43,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 701 events. 275/701 cut-off events. For 355/403 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4603 event pairs, 67 based on Foata normal form. 36/720 useless extension candidates. Maximal degree in co-relation 1852. Up to 302 conditions per place. [2021-08-13 08:29:43,026 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 18 changer transitions 1/91 dead transitions. [2021-08-13 08:29:43,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 91 transitions, 570 flow [2021-08-13 08:29:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:29:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:29:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-13 08:29:43,028 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2021-08-13 08:29:43,028 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,031 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2021-08-13 08:29:43,031 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 91 transitions, 570 flow [2021-08-13 08:29:43,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,032 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,032 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, 1, 1, 1, 1] [2021-08-13 08:29:43,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 08:29:43,033 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1873490551, now seen corresponding path program 4 times [2021-08-13 08:29:43,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889909124] [2021-08-13 08:29:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,092 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 08:29:43,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889909124] [2021-08-13 08:29:43,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889909124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:43,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:43,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810092278] [2021-08-13 08:29:43,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:43,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:43,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:43,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:43,095 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:43,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 91 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:43,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:43,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,241 INFO L129 PetriNetUnfolder]: 284/735 cut-off events. [2021-08-13 08:29:43,241 INFO L130 PetriNetUnfolder]: For 781/885 co-relation queries the response was YES. [2021-08-13 08:29:43,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 735 events. 284/735 cut-off events. For 781/885 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4909 event pairs, 75 based on Foata normal form. 67/784 useless extension candidates. Maximal degree in co-relation 2361. Up to 312 conditions per place. [2021-08-13 08:29:43,245 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 35 changer transitions 6/97 dead transitions. [2021-08-13 08:29:43,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 97 transitions, 760 flow [2021-08-13 08:29:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 08:29:43,248 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 08:29:43,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,250 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2021-08-13 08:29:43,250 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 97 transitions, 760 flow [2021-08-13 08:29:43,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,251 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,251 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, 1, 1, 1, 1] [2021-08-13 08:29:43,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 08:29:43,251 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1603892967, now seen corresponding path program 5 times [2021-08-13 08:29:43,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832363438] [2021-08-13 08:29:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,293 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 08:29:43,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832363438] [2021-08-13 08:29:43,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832363438] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:43,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:29:43,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715810597] [2021-08-13 08:29:43,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:29:43,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:43,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:29:43,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:29:43,295 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:43,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 97 transitions, 760 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:43,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:43,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,392 INFO L129 PetriNetUnfolder]: 244/658 cut-off events. [2021-08-13 08:29:43,393 INFO L130 PetriNetUnfolder]: For 1272/1352 co-relation queries the response was YES. [2021-08-13 08:29:43,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 658 events. 244/658 cut-off events. For 1272/1352 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4324 event pairs, 61 based on Foata normal form. 47/691 useless extension candidates. Maximal degree in co-relation 2524. Up to 287 conditions per place. [2021-08-13 08:29:43,397 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 20 changer transitions 13/105 dead transitions. [2021-08-13 08:29:43,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 105 transitions, 998 flow [2021-08-13 08:29:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:29:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:29:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-13 08:29:43,398 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2021-08-13 08:29:43,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-13 08:29:43,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,400 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2021-08-13 08:29:43,400 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 105 transitions, 998 flow [2021-08-13 08:29:43,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,400 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,401 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, 1, 1, 1, 1] [2021-08-13 08:29:43,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 08:29:43,401 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1121355797, now seen corresponding path program 6 times [2021-08-13 08:29:43,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947992846] [2021-08-13 08:29:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,447 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 08:29:43,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947992846] [2021-08-13 08:29:43,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947992846] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:43,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:43,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533690317] [2021-08-13 08:29:43,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:43,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:43,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:43,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:43,449 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:43,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 105 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:43,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:43,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,585 INFO L129 PetriNetUnfolder]: 227/616 cut-off events. [2021-08-13 08:29:43,585 INFO L130 PetriNetUnfolder]: For 1895/1989 co-relation queries the response was YES. [2021-08-13 08:29:43,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 616 events. 227/616 cut-off events. For 1895/1989 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3994 event pairs, 61 based on Foata normal form. 29/631 useless extension candidates. Maximal degree in co-relation 2736. Up to 270 conditions per place. [2021-08-13 08:29:43,589 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 34 changer transitions 17/109 dead transitions. [2021-08-13 08:29:43,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 1216 flow [2021-08-13 08:29:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 08:29:43,590 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 08:29:43,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 08:29:43,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,592 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,592 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2021-08-13 08:29:43,592 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 1216 flow [2021-08-13 08:29:43,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,592 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,592 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, 1, 1, 1, 1] [2021-08-13 08:29:43,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 08:29:43,593 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash 175495729, now seen corresponding path program 7 times [2021-08-13 08:29:43,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783799399] [2021-08-13 08:29:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,669 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 08:29:43,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783799399] [2021-08-13 08:29:43,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783799399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:43,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:29:43,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45368672] [2021-08-13 08:29:43,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:29:43,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:43,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:29:43,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:29:43,671 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:43,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:43,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:43,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,805 INFO L129 PetriNetUnfolder]: 149/445 cut-off events. [2021-08-13 08:29:43,805 INFO L130 PetriNetUnfolder]: For 2029/2097 co-relation queries the response was YES. [2021-08-13 08:29:43,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 445 events. 149/445 cut-off events. For 2029/2097 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2677 event pairs, 49 based on Foata normal form. 26/464 useless extension candidates. Maximal degree in co-relation 2276. Up to 212 conditions per place. [2021-08-13 08:29:43,808 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 20 changer transitions 39/101 dead transitions. [2021-08-13 08:29:43,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 1286 flow [2021-08-13 08:29:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:29:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:29:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 08:29:43,809 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 08:29:43,809 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,811 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,811 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2021-08-13 08:29:43,811 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 101 transitions, 1286 flow [2021-08-13 08:29:43,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,811 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,811 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, 1, 1, 1, 1] [2021-08-13 08:29:43,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 08:29:43,811 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,812 INFO L82 PathProgramCache]: Analyzing trace with hash -140295209, now seen corresponding path program 8 times [2021-08-13 08:29:43,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298564634] [2021-08-13 08:29:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,844 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 08:29:43,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298564634] [2021-08-13 08:29:43,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298564634] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:43,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:29:43,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033110191] [2021-08-13 08:29:43,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:29:43,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:43,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:29:43,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:29:43,845 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:43,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 101 transitions, 1286 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:43,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:43,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:43,956 INFO L129 PetriNetUnfolder]: 134/411 cut-off events. [2021-08-13 08:29:43,956 INFO L130 PetriNetUnfolder]: For 2602/2703 co-relation queries the response was YES. [2021-08-13 08:29:43,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 411 events. 134/411 cut-off events. For 2602/2703 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2477 event pairs, 46 based on Foata normal form. 16/419 useless extension candidates. Maximal degree in co-relation 2383. Up to 196 conditions per place. [2021-08-13 08:29:43,958 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 20 selfloop transitions, 14 changer transitions 58/109 dead transitions. [2021-08-13 08:29:43,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 1580 flow [2021-08-13 08:29:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:29:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:29:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 08:29:43,959 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 08:29:43,959 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:43,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 08:29:43,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,960 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,960 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2021-08-13 08:29:43,960 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 109 transitions, 1580 flow [2021-08-13 08:29:43,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:43,960 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:43,961 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, 1, 1, 1, 1] [2021-08-13 08:29:43,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 08:29:43,961 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:43,961 INFO L82 PathProgramCache]: Analyzing trace with hash 949219561, now seen corresponding path program 9 times [2021-08-13 08:29:43,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:43,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142635463] [2021-08-13 08:29:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:43,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:43,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:29:43,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:43,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:43,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:43,999 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 08:29:43,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:43,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142635463] [2021-08-13 08:29:43,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142635463] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:43,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:44,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:44,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075604548] [2021-08-13 08:29:44,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:44,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:44,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:44,001 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:44,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 109 transitions, 1580 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:44,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:44,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:44,118 INFO L129 PetriNetUnfolder]: 132/461 cut-off events. [2021-08-13 08:29:44,118 INFO L130 PetriNetUnfolder]: For 3498/3605 co-relation queries the response was YES. [2021-08-13 08:29:44,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 461 events. 132/461 cut-off events. For 3498/3605 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3050 event pairs, 39 based on Foata normal form. 14/469 useless extension candidates. Maximal degree in co-relation 2879. Up to 218 conditions per place. [2021-08-13 08:29:44,120 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 18 selfloop transitions, 21 changer transitions 75/131 dead transitions. [2021-08-13 08:29:44,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 2170 flow [2021-08-13 08:29:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 08:29:44,121 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 08:29:44,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:44,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,123 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2021-08-13 08:29:44,123 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2170 flow [2021-08-13 08:29:44,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,123 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:44,123 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, 1, 1, 1, 1] [2021-08-13 08:29:44,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 08:29:44,123 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1371753371, now seen corresponding path program 10 times [2021-08-13 08:29:44,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:44,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757128279] [2021-08-13 08:29:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:44,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:44,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:29:44,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:44,171 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 08:29:44,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:44,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757128279] [2021-08-13 08:29:44,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757128279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:44,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:44,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:44,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421538346] [2021-08-13 08:29:44,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:44,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:44,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:44,175 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:44,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2170 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:44,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:44,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:44,263 INFO L129 PetriNetUnfolder]: 124/446 cut-off events. [2021-08-13 08:29:44,263 INFO L130 PetriNetUnfolder]: For 4091/4139 co-relation queries the response was YES. [2021-08-13 08:29:44,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 446 events. 124/446 cut-off events. For 4091/4139 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2909 event pairs, 37 based on Foata normal form. 16/460 useless extension candidates. Maximal degree in co-relation 3069. Up to 211 conditions per place. [2021-08-13 08:29:44,265 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 15 selfloop transitions, 16 changer transitions 87/134 dead transitions. [2021-08-13 08:29:44,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 2472 flow [2021-08-13 08:29:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 08:29:44,266 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 08:29:44,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:44,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,267 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2021-08-13 08:29:44,267 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 134 transitions, 2472 flow [2021-08-13 08:29:44,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,268 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:44,268 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, 1, 1, 1, 1] [2021-08-13 08:29:44,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 08:29:44,268 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:44,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:44,269 INFO L82 PathProgramCache]: Analyzing trace with hash 490266925, now seen corresponding path program 11 times [2021-08-13 08:29:44,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:44,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475354395] [2021-08-13 08:29:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:44,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:44,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:44,322 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 08:29:44,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:44,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475354395] [2021-08-13 08:29:44,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475354395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:44,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:44,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 08:29:44,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174116605] [2021-08-13 08:29:44,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 08:29:44,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 08:29:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 08:29:44,324 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:44,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 134 transitions, 2472 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:44,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:44,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:44,447 INFO L129 PetriNetUnfolder]: 97/373 cut-off events. [2021-08-13 08:29:44,448 INFO L130 PetriNetUnfolder]: For 4346/4427 co-relation queries the response was YES. [2021-08-13 08:29:44,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 373 events. 97/373 cut-off events. For 4346/4427 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2378 event pairs, 31 based on Foata normal form. 14/385 useless extension candidates. Maximal degree in co-relation 2848. Up to 172 conditions per place. [2021-08-13 08:29:44,449 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 10 selfloop transitions, 3 changer transitions 107/136 dead transitions. [2021-08-13 08:29:44,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 2750 flow [2021-08-13 08:29:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 08:29:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 08:29:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 08:29:44,451 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 08:29:44,451 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 08:29:44,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 08:29:44,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:44,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 08:29:44,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,452 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,452 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 58 predicate places. [2021-08-13 08:29:44,452 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 136 transitions, 2750 flow [2021-08-13 08:29:44,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,452 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:29:44,452 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, 1, 1, 1, 1] [2021-08-13 08:29:44,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 08:29:44,453 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:29:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:29:44,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1418480251, now seen corresponding path program 12 times [2021-08-13 08:29:44,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:29:44,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177572478] [2021-08-13 08:29:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:29:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:29:44,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:29:44,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:29:44,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:29:44,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:29:44,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:29:44,489 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 08:29:44,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:29:44,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177572478] [2021-08-13 08:29:44,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177572478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:29:44,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:29:44,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:29:44,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138927958] [2021-08-13 08:29:44,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:29:44,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:29:44,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:29:44,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:29:44,491 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 08:29:44,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 136 transitions, 2750 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:29:44,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 08:29:44,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:29:44,589 INFO L129 PetriNetUnfolder]: 84/333 cut-off events. [2021-08-13 08:29:44,589 INFO L130 PetriNetUnfolder]: For 4744/4770 co-relation queries the response was YES. [2021-08-13 08:29:44,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 333 events. 84/333 cut-off events. For 4744/4770 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2131 event pairs, 25 based on Foata normal form. 10/342 useless extension candidates. Maximal degree in co-relation 2807. Up to 152 conditions per place. [2021-08-13 08:29:44,590 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 136/136 dead transitions. [2021-08-13 08:29:44,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 3070 flow [2021-08-13 08:29:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:29:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:29:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 08:29:44,592 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 08:29:44,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:29:44,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 08:29:44,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,593 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2021-08-13 08:29:44,593 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 3070 flow [2021-08-13 08:29:44,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:29:44,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown