/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:23:58,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:23:58,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:23:58,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 09:23:58,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:23:58,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:23:58,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:23:58,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:23:58,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:23:58,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:23:58,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:23:58,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:23:58,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:23:58,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:23:58,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:23:58,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:23:58,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:23:58,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 09:23:58,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 09:23:58,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 09:23:58,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 09:23:58,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 09:23:58,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 09:23:58,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 09:23:58,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 09:23:58,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:23:58,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:23:58,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:23:58,358 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.epf [2021-06-13 09:23:58,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:23:58,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:23:58,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:23:58,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:23:58,401 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:23:58,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:23:58,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:23:58,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:23:58,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:23:58,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:23:58,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:23:58,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:23:58,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:23:58,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:23:58,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:23:58,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:23:58,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:23:58,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:23:58,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:23:58,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:23:58,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:23:58,701 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:23:58,702 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:23:58,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl [2021-06-13 09:23:58,703 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/poker-hand-symm.wvr.bpl' [2021-06-13 09:23:58,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:23:58,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:23:58,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:23:58,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:23:58,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:23:58,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:23:58,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:23:58,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:23:58,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:23:58,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/1) ... [2021-06-13 09:23:58,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:23:58,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:23:58,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:23:58,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:23:58,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (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 [2021-06-13 09:23:58,921 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:23:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:23:58,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:23:58,923 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:23:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:23:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:23:58,924 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:23:58,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:23:58,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:23:58,925 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:23:59,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:23:59,583 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-13 09:23:59,586 INFO L202 PluginConnector]: Adding new model poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:23:59 BoogieIcfgContainer [2021-06-13 09:23:59,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:23:59,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:23:59,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:23:59,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:23:59,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:23:58" (1/2) ... [2021-06-13 09:23:59,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fd928b and model type poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:23:59, skipping insertion in model container [2021-06-13 09:23:59,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "poker-hand-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:23:59" (2/2) ... [2021-06-13 09:23:59,596 INFO L111 eAbstractionObserver]: Analyzing ICFG poker-hand-symm.wvr.bpl [2021-06-13 09:23:59,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:23:59,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:23:59,602 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:23:59,629 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-13 09:23:59,648 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 09:23:59,665 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:23:59,665 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:23:59,665 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:23:59,665 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:23:59,665 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:23:59,665 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:23:59,666 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:23:59,666 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:23:59,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 26 transitions, 68 flow [2021-06-13 09:23:59,690 INFO L129 PetriNetUnfolder]: 8/24 cut-off events. [2021-06-13 09:23:59,690 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:23:59,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 8/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 33 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2021-06-13 09:23:59,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 26 transitions, 68 flow [2021-06-13 09:23:59,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 22 transitions, 56 flow [2021-06-13 09:23:59,702 INFO L129 PetriNetUnfolder]: 8/21 cut-off events. [2021-06-13 09:23:59,702 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:23:59,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:23:59,703 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:23:59,703 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:23:59,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:23:59,708 INFO L82 PathProgramCache]: Analyzing trace with hash 316421599, now seen corresponding path program 1 times [2021-06-13 09:23:59,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:23:59,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883287178] [2021-06-13 09:23:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:23:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:00,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:00,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:00,062 INFO L142 QuantifierPusher]: treesize reduction 306, result has 51.3 percent of original size [2021-06-13 09:24:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 322 [2021-06-13 09:24:00,306 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-13 09:24:00,355 INFO L142 QuantifierPusher]: treesize reduction 1139, result has 8.9 percent of original size [2021-06-13 09:24:00,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-06-13 09:24:00,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:00,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:00,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:00,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883287178] [2021-06-13 09:24:00,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883287178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:00,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:00,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:24:00,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243299853] [2021-06-13 09:24:00,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:24:00,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:00,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:24:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:24:00,466 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2021-06-13 09:24:00,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:00,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:00,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2021-06-13 09:24:00,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:00,634 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-13 09:24:00,698 INFO L129 PetriNetUnfolder]: 42/89 cut-off events. [2021-06-13 09:24:00,698 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-06-13 09:24:00,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 89 events. 42/89 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 287 event pairs, 9 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 150. Up to 54 conditions per place. [2021-06-13 09:24:00,703 INFO L132 encePairwiseOnDemand]: 22/26 looper letters, 20 selfloop transitions, 1 changer transitions 1/29 dead transitions. [2021-06-13 09:24:00,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 29 transitions, 114 flow [2021-06-13 09:24:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 09:24:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 09:24:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2021-06-13 09:24:00,714 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2021-06-13 09:24:00,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2021-06-13 09:24:00,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2021-06-13 09:24:00,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:00,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2021-06-13 09:24:00,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:00,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:00,725 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:00,727 INFO L185 Difference]: Start difference. First operand has 21 places, 22 transitions, 56 flow. Second operand 4 states and 64 transitions. [2021-06-13 09:24:00,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 29 transitions, 114 flow [2021-06-13 09:24:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 29 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 09:24:00,732 INFO L241 Difference]: Finished difference. Result has 22 places, 22 transitions, 57 flow [2021-06-13 09:24:00,734 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=22, PETRI_TRANSITIONS=22} [2021-06-13 09:24:00,735 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2021-06-13 09:24:00,735 INFO L482 AbstractCegarLoop]: Abstraction has has 22 places, 22 transitions, 57 flow [2021-06-13 09:24:00,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:00,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:00,735 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:00,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:24:00,736 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:00,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1977673933, now seen corresponding path program 2 times [2021-06-13 09:24:00,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:00,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853486861] [2021-06-13 09:24:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:00,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:00,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:00,987 INFO L142 QuantifierPusher]: treesize reduction 114, result has 82.9 percent of original size [2021-06-13 09:24:00,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 551 [2021-06-13 09:24:01,294 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-06-13 09:24:01,305 INFO L142 QuantifierPusher]: treesize reduction 289, result has 31.8 percent of original size [2021-06-13 09:24:01,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-06-13 09:24:01,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:01,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853486861] [2021-06-13 09:24:01,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853486861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:24:01,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916372525] [2021-06-13 09:24:01,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:24:01,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:24:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:24:01,381 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2021-06-13 09:24:01,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2021-06-13 09:24:01,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:01,627 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-13 09:24:01,679 INFO L129 PetriNetUnfolder]: 44/103 cut-off events. [2021-06-13 09:24:01,679 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-06-13 09:24:01,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 103 events. 44/103 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 377 event pairs, 11 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 180. Up to 60 conditions per place. [2021-06-13 09:24:01,682 INFO L132 encePairwiseOnDemand]: 23/26 looper letters, 21 selfloop transitions, 1 changer transitions 1/30 dead transitions. [2021-06-13 09:24:01,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 124 flow [2021-06-13 09:24:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-13 09:24:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-13 09:24:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2021-06-13 09:24:01,685 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2021-06-13 09:24:01,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 64 transitions. [2021-06-13 09:24:01,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 64 transitions. [2021-06-13 09:24:01,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:01,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 64 transitions. [2021-06-13 09:24:01,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,693 INFO L185 Difference]: Start difference. First operand has 22 places, 22 transitions, 57 flow. Second operand 4 states and 64 transitions. [2021-06-13 09:24:01,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 124 flow [2021-06-13 09:24:01,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 118 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-13 09:24:01,702 INFO L241 Difference]: Finished difference. Result has 24 places, 22 transitions, 61 flow [2021-06-13 09:24:01,703 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=24, PETRI_TRANSITIONS=22} [2021-06-13 09:24:01,707 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2021-06-13 09:24:01,707 INFO L482 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 61 flow [2021-06-13 09:24:01,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,707 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:01,707 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:01,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:24:01,708 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:01,708 INFO L82 PathProgramCache]: Analyzing trace with hash 102704520, now seen corresponding path program 1 times [2021-06-13 09:24:01,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:01,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726255931] [2021-06-13 09:24:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:01,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:01,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:01,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726255931] [2021-06-13 09:24:01,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726255931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:01,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442087019] [2021-06-13 09:24:01,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:01,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:01,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 26 [2021-06-13 09:24:01,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 26 [2021-06-13 09:24:01,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:01,748 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-06-13 09:24:01,748 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-13 09:24:01,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 35 events. 6/35 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2021-06-13 09:24:01,749 INFO L132 encePairwiseOnDemand]: 23/26 looper letters, 2 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2021-06-13 09:24:01,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 71 flow [2021-06-13 09:24:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2021-06-13 09:24:01,751 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2021-06-13 09:24:01,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:01,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,753 INFO L185 Difference]: Start difference. First operand has 24 places, 22 transitions, 61 flow. Second operand 3 states and 71 transitions. [2021-06-13 09:24:01,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 71 flow [2021-06-13 09:24:01,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 68 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 09:24:01,756 INFO L241 Difference]: Finished difference. Result has 24 places, 23 transitions, 70 flow [2021-06-13 09:24:01,756 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2021-06-13 09:24:01,757 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 3 predicate places. [2021-06-13 09:24:01,757 INFO L482 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 70 flow [2021-06-13 09:24:01,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:01,757 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:01,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:24:01,757 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:01,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1116726718, now seen corresponding path program 1 times [2021-06-13 09:24:01,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:01,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456567040] [2021-06-13 09:24:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:01,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:01,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:01,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456567040] [2021-06-13 09:24:01,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456567040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:01,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338562087] [2021-06-13 09:24:01,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:01,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:01,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:01,784 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 26 [2021-06-13 09:24:01,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 26 [2021-06-13 09:24:01,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:01,798 INFO L129 PetriNetUnfolder]: 6/36 cut-off events. [2021-06-13 09:24:01,799 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 09:24:01,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 36 events. 6/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2021-06-13 09:24:01,800 INFO L132 encePairwiseOnDemand]: 23/26 looper letters, 2 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2021-06-13 09:24:01,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 80 flow [2021-06-13 09:24:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:01,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2021-06-13 09:24:01,804 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2021-06-13 09:24:01,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:01,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,807 INFO L185 Difference]: Start difference. First operand has 24 places, 23 transitions, 70 flow. Second operand 3 states and 71 transitions. [2021-06-13 09:24:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 80 flow [2021-06-13 09:24:01,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 76 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:01,808 INFO L241 Difference]: Finished difference. Result has 26 places, 24 transitions, 78 flow [2021-06-13 09:24:01,808 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2021-06-13 09:24:01,809 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2021-06-13 09:24:01,809 INFO L482 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 78 flow [2021-06-13 09:24:01,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:01,809 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:01,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:24:01,809 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash 628036112, now seen corresponding path program 1 times [2021-06-13 09:24:01,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:01,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826975169] [2021-06-13 09:24:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:01,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:01,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:01,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826975169] [2021-06-13 09:24:01,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826975169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:01,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300164942] [2021-06-13 09:24:01,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:01,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:01,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:01,849 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 26 [2021-06-13 09:24:01,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 26 [2021-06-13 09:24:01,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:01,864 INFO L129 PetriNetUnfolder]: 6/37 cut-off events. [2021-06-13 09:24:01,864 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-13 09:24:01,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 37 events. 6/37 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2021-06-13 09:24:01,866 INFO L132 encePairwiseOnDemand]: 23/26 looper letters, 2 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2021-06-13 09:24:01,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 88 flow [2021-06-13 09:24:01,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2021-06-13 09:24:01,867 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2021-06-13 09:24:01,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:01,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,868 INFO L185 Difference]: Start difference. First operand has 26 places, 24 transitions, 78 flow. Second operand 3 states and 71 transitions. [2021-06-13 09:24:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 88 flow [2021-06-13 09:24:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 84 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:01,870 INFO L241 Difference]: Finished difference. Result has 28 places, 25 transitions, 86 flow [2021-06-13 09:24:01,870 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2021-06-13 09:24:01,871 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2021-06-13 09:24:01,871 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 86 flow [2021-06-13 09:24:01,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:01,871 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:01,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:24:01,871 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1070631148, now seen corresponding path program 1 times [2021-06-13 09:24:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:01,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286373960] [2021-06-13 09:24:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:01,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:01,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:01,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286373960] [2021-06-13 09:24:01,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286373960] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:01,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687969684] [2021-06-13 09:24:01,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:01,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:01,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:01,905 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 26 [2021-06-13 09:24:01,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 26 [2021-06-13 09:24:01,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:01,919 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-06-13 09:24:01,919 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:24:01,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 38 events. 6/38 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2021-06-13 09:24:01,920 INFO L132 encePairwiseOnDemand]: 23/26 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-06-13 09:24:01,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 96 flow [2021-06-13 09:24:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2021-06-13 09:24:01,922 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2021-06-13 09:24:01,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:01,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2021-06-13 09:24:01,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,924 INFO L185 Difference]: Start difference. First operand has 28 places, 25 transitions, 86 flow. Second operand 3 states and 71 transitions. [2021-06-13 09:24:01,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 96 flow [2021-06-13 09:24:01,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 92 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:01,927 INFO L241 Difference]: Finished difference. Result has 30 places, 26 transitions, 94 flow [2021-06-13 09:24:01,928 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2021-06-13 09:24:01,928 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2021-06-13 09:24:01,928 INFO L482 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 94 flow [2021-06-13 09:24:01,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,928 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:01,928 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:01,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:24:01,929 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:01,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2035414731, now seen corresponding path program 1 times [2021-06-13 09:24:01,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:01,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337038782] [2021-06-13 09:24:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:01,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,960 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.4 percent of original size [2021-06-13 09:24:01,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-06-13 09:24:01,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:24:01,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:01,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337038782] [2021-06-13 09:24:01,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337038782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:01,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:01,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:01,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595326011] [2021-06-13 09:24:01,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:01,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:01,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:01,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:01,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2021-06-13 09:24:01,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:01,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:01,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2021-06-13 09:24:01,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:02,022 INFO L129 PetriNetUnfolder]: 41/126 cut-off events. [2021-06-13 09:24:02,022 INFO L130 PetriNetUnfolder]: For 99/102 co-relation queries the response was YES. [2021-06-13 09:24:02,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 126 events. 41/126 cut-off events. For 99/102 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 547 event pairs, 10 based on Foata normal form. 12/125 useless extension candidates. Maximal degree in co-relation 255. Up to 52 conditions per place. [2021-06-13 09:24:02,023 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 16 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-06-13 09:24:02,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 148 flow [2021-06-13 09:24:02,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2021-06-13 09:24:02,025 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2021-06-13 09:24:02,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 59 transitions. [2021-06-13 09:24:02,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 59 transitions. [2021-06-13 09:24:02,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:02,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 59 transitions. [2021-06-13 09:24:02,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,026 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 94 flow. Second operand 3 states and 59 transitions. [2021-06-13 09:24:02,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 148 flow [2021-06-13 09:24:02,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:02,027 INFO L241 Difference]: Finished difference. Result has 33 places, 28 transitions, 120 flow [2021-06-13 09:24:02,028 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2021-06-13 09:24:02,028 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 12 predicate places. [2021-06-13 09:24:02,028 INFO L482 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 120 flow [2021-06-13 09:24:02,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,028 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:02,028 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:02,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 09:24:02,029 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash -521090090, now seen corresponding path program 1 times [2021-06-13 09:24:02,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:02,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519411330] [2021-06-13 09:24:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:02,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,040 INFO L142 QuantifierPusher]: treesize reduction -2, result has 114.3 percent of original size [2021-06-13 09:24:02,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-13 09:24:02,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:24:02,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:02,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519411330] [2021-06-13 09:24:02,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519411330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:02,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:02,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:02,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813104174] [2021-06-13 09:24:02,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:02,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:02,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 26 [2021-06-13 09:24:02,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:02,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 26 [2021-06-13 09:24:02,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:02,071 INFO L129 PetriNetUnfolder]: 15/81 cut-off events. [2021-06-13 09:24:02,071 INFO L130 PetriNetUnfolder]: For 111/117 co-relation queries the response was YES. [2021-06-13 09:24:02,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 81 events. 15/81 cut-off events. For 111/117 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 335 event pairs, 2 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 141. Up to 16 conditions per place. [2021-06-13 09:24:02,072 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 10 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-06-13 09:24:02,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 156 flow [2021-06-13 09:24:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2021-06-13 09:24:02,073 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-06-13 09:24:02,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2021-06-13 09:24:02,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2021-06-13 09:24:02,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:02,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2021-06-13 09:24:02,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,074 INFO L185 Difference]: Start difference. First operand has 33 places, 28 transitions, 120 flow. Second operand 3 states and 65 transitions. [2021-06-13 09:24:02,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 156 flow [2021-06-13 09:24:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:02,076 INFO L241 Difference]: Finished difference. Result has 36 places, 30 transitions, 148 flow [2021-06-13 09:24:02,076 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2021-06-13 09:24:02,076 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2021-06-13 09:24:02,077 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 148 flow [2021-06-13 09:24:02,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:02,077 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:02,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 09:24:02,077 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:02,077 INFO L82 PathProgramCache]: Analyzing trace with hash -881567146, now seen corresponding path program 1 times [2021-06-13 09:24:02,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:02,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226442319] [2021-06-13 09:24:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:02,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,087 INFO L142 QuantifierPusher]: treesize reduction -2, result has 114.3 percent of original size [2021-06-13 09:24:02,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-13 09:24:02,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:24:02,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:02,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226442319] [2021-06-13 09:24:02,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226442319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:02,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:02,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:02,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372932969] [2021-06-13 09:24:02,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:02,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:02,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:02,095 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 26 [2021-06-13 09:24:02,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:02,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 26 [2021-06-13 09:24:02,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:02,115 INFO L129 PetriNetUnfolder]: 13/64 cut-off events. [2021-06-13 09:24:02,115 INFO L130 PetriNetUnfolder]: For 103/129 co-relation queries the response was YES. [2021-06-13 09:24:02,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 64 events. 13/64 cut-off events. For 103/129 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 216 event pairs, 2 based on Foata normal form. 7/67 useless extension candidates. Maximal degree in co-relation 131. Up to 13 conditions per place. [2021-06-13 09:24:02,116 INFO L132 encePairwiseOnDemand]: 20/26 looper letters, 9 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2021-06-13 09:24:02,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 183 flow [2021-06-13 09:24:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2021-06-13 09:24:02,117 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2021-06-13 09:24:02,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 63 transitions. [2021-06-13 09:24:02,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 63 transitions. [2021-06-13 09:24:02,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:02,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 63 transitions. [2021-06-13 09:24:02,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,118 INFO L185 Difference]: Start difference. First operand has 36 places, 30 transitions, 148 flow. Second operand 3 states and 63 transitions. [2021-06-13 09:24:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 183 flow [2021-06-13 09:24:02,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 177 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-06-13 09:24:02,120 INFO L241 Difference]: Finished difference. Result has 39 places, 30 transitions, 159 flow [2021-06-13 09:24:02,120 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2021-06-13 09:24:02,120 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 18 predicate places. [2021-06-13 09:24:02,121 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 159 flow [2021-06-13 09:24:02,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:02,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:02,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 09:24:02,121 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:02,122 INFO L82 PathProgramCache]: Analyzing trace with hash 678489427, now seen corresponding path program 1 times [2021-06-13 09:24:02,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:02,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88587304] [2021-06-13 09:24:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:02,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,134 INFO L142 QuantifierPusher]: treesize reduction -2, result has 103.2 percent of original size [2021-06-13 09:24:02,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 09:24:02,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:24:02,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:02,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88587304] [2021-06-13 09:24:02,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88587304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:24:02,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:24:02,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:24:02,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833026933] [2021-06-13 09:24:02,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:24:02,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:24:02,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:24:02,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:24:02,157 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2021-06-13 09:24:02,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:24:02,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2021-06-13 09:24:02,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:24:02,181 INFO L129 PetriNetUnfolder]: 25/75 cut-off events. [2021-06-13 09:24:02,181 INFO L130 PetriNetUnfolder]: For 113/121 co-relation queries the response was YES. [2021-06-13 09:24:02,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 75 events. 25/75 cut-off events. For 113/121 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 232 event pairs, 8 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 188. Up to 33 conditions per place. [2021-06-13 09:24:02,182 INFO L132 encePairwiseOnDemand]: 22/26 looper letters, 14 selfloop transitions, 2 changer transitions 1/29 dead transitions. [2021-06-13 09:24:02,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 182 flow [2021-06-13 09:24:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:24:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:24:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2021-06-13 09:24:02,183 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2021-06-13 09:24:02,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2021-06-13 09:24:02,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2021-06-13 09:24:02,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:24:02,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2021-06-13 09:24:02,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,185 INFO L185 Difference]: Start difference. First operand has 39 places, 30 transitions, 159 flow. Second operand 3 states and 53 transitions. [2021-06-13 09:24:02,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 182 flow [2021-06-13 09:24:02,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 166 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-06-13 09:24:02,186 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 128 flow [2021-06-13 09:24:02,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2021-06-13 09:24:02,187 INFO L335 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2021-06-13 09:24:02,187 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 128 flow [2021-06-13 09:24:02,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:24:02,187 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:24:02,187 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:24:02,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 09:24:02,187 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:24:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:24:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1512558721, now seen corresponding path program 1 times [2021-06-13 09:24:02,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:24:02,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453635823] [2021-06-13 09:24:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:24:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:02,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,240 INFO L142 QuantifierPusher]: treesize reduction 3, result has 66.7 percent of original size [2021-06-13 09:24:02,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,247 INFO L142 QuantifierPusher]: treesize reduction 11, result has 85.9 percent of original size [2021-06-13 09:24:02,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-06-13 09:24:02,286 INFO L142 QuantifierPusher]: treesize reduction 1, result has 99.4 percent of original size [2021-06-13 09:24:02,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-06-13 09:24:02,378 INFO L142 QuantifierPusher]: treesize reduction 16, result has 82.8 percent of original size [2021-06-13 09:24:02,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-06-13 09:24:02,446 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.7 percent of original size [2021-06-13 09:24:02,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-06-13 09:24:02,486 INFO L142 QuantifierPusher]: treesize reduction 296, result has 8.4 percent of original size [2021-06-13 09:24:02,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 09:24:02,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:24:02,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:24:02,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453635823] [2021-06-13 09:24:02,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453635823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 09:24:02,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298496266] [2021-06-13 09:24:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 09:24:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:24:02,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-13 09:24:02,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 09:24:02,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:24:02,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-13 09:24:02,614 INFO L142 QuantifierPusher]: treesize reduction 8, result has 94.8 percent of original size [2021-06-13 09:24:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:24:02,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-06-13 09:24:02,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-06-13 09:24:02,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:24:02,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-06-13 09:24:02,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-06-13 09:24:02,697 INFO L142 QuantifierPusher]: treesize reduction 415, result has 50.9 percent of original size [2021-06-13 09:24:02,729 INFO L147 QuantifierPusher]: treesize reduction 26, result has 93.8 percent of original size 396 [2021-06-13 09:24:02,757 INFO L142 QuantifierPusher]: treesize reduction 26, result has 93.8 percent of original size [2021-06-13 09:24:02,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 396 [2021-06-13 09:24:03,023 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2021-06-13 09:24:03,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-06-13 09:24:03,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-06-13 09:24:03,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-06-13 09:24:03,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-06-13 09:24:03,118 INFO L142 QuantifierPusher]: treesize reduction 54, result has 70.7 percent of original size [2021-06-13 09:24:03,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:24:03,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-13 09:24:03,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-06-13 09:24:03,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-06-13 09:24:03,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-06-13 09:24:03,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-06-13 09:24:03,231 INFO L142 QuantifierPusher]: treesize reduction 8, result has 96.7 percent of original size [2021-06-13 09:24:03,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:24:03,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-06-13 09:24:03,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-06-13 09:24:03,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:24:03,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:24:03,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-06-13 09:24:03,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-06-13 09:25:42,414 WARN L205 SmtUtils]: Spent 1.65 m on a formula simplification. DAG size of input: 90 DAG size of output: 93 [2021-06-13 09:25:42,416 INFO L142 QuantifierPusher]: treesize reduction 131, result has 76.3 percent of original size [2021-06-13 09:25:42,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:25:42,744 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 57 [2021-06-13 09:25:42,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:25:43,300 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2021-06-13 09:25:43,306 INFO L147 QuantifierPusher]: treesize reduction 6, result has 97.7 percent of original size 251 [2021-06-13 09:25:43,312 INFO L732 QuantifierPusher]: Distributing 4 conjuncts over 4 disjuncts [2021-06-13 09:25:43,318 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:25:43,318 WARN L159 QuantifierPusher]: Ignoring assumption. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown