/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 08:22:18,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 08:22:18,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 08:22:18,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 08:22:18,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 08:22:18,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 08:22:18,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 08:22:18,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 08:22:18,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 08:22:18,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 08:22:18,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 08:22:18,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 08:22:18,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 08:22:18,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 08:22:18,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 08:22:19,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 08:22:19,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 08:22:19,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 08:22:19,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 08:22:19,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 08:22:19,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 08:22:19,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 08:22:19,046 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 08:22:19,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 08:22:19,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 08:22:19,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 08:22:19,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 08:22:19,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 08:22:19,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 08:22:19,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 08:22:19,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 08:22:19,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:22:19,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 08:22:19,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 08:22:19,050 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 08:22:19,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 08:22:19,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 08:22:19,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 08:22:19,346 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 08:22:19,347 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 08:22:19,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-08-13 08:22:19,348 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-08-13 08:22:19,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 08:22:19,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 08:22:19,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 08:22:19,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 08:22:19,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 08:22:19,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 08:22:19,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 08:22:19,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 08:22:19,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 08:22:19,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... [2021-08-13 08:22:19,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 08:22:19,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 08:22:19,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 08:22:19,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 08:22:19,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 08:22:19,482 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 08:22:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 08:22:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 08:22:19,483 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 08:22:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 08:22:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 08:22:19,483 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 08:22:19,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 08:22:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 08:22:19,484 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 08:22:19,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 08:22:19,591 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 08:22:19,592 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:22:19 BoogieIcfgContainer [2021-08-13 08:22:19,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 08:22:19,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 08:22:19,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 08:22:19,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 08:22:19,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 08:22:19" (1/2) ... [2021-08-13 08:22:19,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c31a40d and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 08:22:19, skipping insertion in model container [2021-08-13 08:22:19,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 08:22:19" (2/2) ... [2021-08-13 08:22:19,598 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-08-13 08:22:19,601 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 08:22:19,601 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 08:22:19,602 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 08:22:19,637 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-13 08:22:19,651 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 08:22:19,682 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 08:22:19,682 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 08:22:19,682 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 08:22:19,683 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 08:22:19,683 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 08:22:19,683 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 08:22:19,683 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 08:22:19,683 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 08:22:19,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 66 flow [2021-08-13 08:22:19,710 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-08-13 08:22:19,710 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 08:22:19,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-08-13 08:22:19,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 66 flow [2021-08-13 08:22:19,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2021-08-13 08:22:19,721 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-08-13 08:22:19,721 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 08:22:19,721 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:19,721 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:19,722 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1978128435, now seen corresponding path program 1 times [2021-08-13 08:22:19,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:19,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601788621] [2021-08-13 08:22:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:19,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:19,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:19,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:19,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601788621] [2021-08-13 08:22:19,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601788621] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:19,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:19,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 08:22:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664079337] [2021-08-13 08:22:19,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 08:22:19,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:19,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 08:22:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 08:22:19,828 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-08-13 08:22:19,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:19,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:19,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-08-13 08:22:19,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:19,865 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2021-08-13 08:22:19,871 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-08-13 08:22:19,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 55 events. 12/55 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 2 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 66. Up to 20 conditions per place. [2021-08-13 08:22:19,873 INFO L132 encePairwiseOnDemand]: 21/25 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-08-13 08:22:19,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 74 flow [2021-08-13 08:22:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 08:22:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 08:22:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2021-08-13 08:22:19,880 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.84 [2021-08-13 08:22:19,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 63 transitions. [2021-08-13 08:22:19,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 63 transitions. [2021-08-13 08:22:19,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:19,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 63 transitions. [2021-08-13 08:22:19,883 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) [2021-08-13 08:22:19,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:19,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:19,886 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-08-13 08:22:19,886 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2021-08-13 08:22:19,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:19,887 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:19,887 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:19,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 08:22:19,887 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:19,888 INFO L82 PathProgramCache]: Analyzing trace with hash -668306298, now seen corresponding path program 1 times [2021-08-13 08:22:19,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:19,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473371766] [2021-08-13 08:22:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:19,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:19,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:19,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:19,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:19,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473371766] [2021-08-13 08:22:19,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473371766] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 08:22:19,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27721472] [2021-08-13 08:22:19,940 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 [2021-08-13 08:22:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:19,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-13 08:22:19,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-13 08:22:19,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:19,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:19,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 08:22:20,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-08-13 08:22:20,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:22:20,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-08-13 08:22:20,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:22:20,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-08-13 08:22:20,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:22:20,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:22:20,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,063 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-08-13 08:22:20,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:20,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27721472] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-13 08:22:20,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-13 08:22:20,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-13 08:22:20,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696177684] [2021-08-13 08:22:20,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:22:20,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:22:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:22:20,074 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-08-13 08:22:20,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-08-13 08:22:20,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,144 INFO L129 PetriNetUnfolder]: 42/131 cut-off events. [2021-08-13 08:22:20,144 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-08-13 08:22:20,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 131 events. 42/131 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 521 event pairs, 8 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 231. Up to 36 conditions per place. [2021-08-13 08:22:20,146 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 16 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2021-08-13 08:22:20,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 148 flow [2021-08-13 08:22:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:22:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:22:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-08-13 08:22:20,149 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.792 [2021-08-13 08:22:20,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,151 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,151 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2021-08-13 08:22:20,151 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 37 transitions, 148 flow [2021-08-13 08:22:20,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,151 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:20,152 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:20,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-13 08:22:20,369 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:20,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1845470292, now seen corresponding path program 2 times [2021-08-13 08:22:20,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:20,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228618392] [2021-08-13 08:22:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:20,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:22:20,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:20,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:20,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228618392] [2021-08-13 08:22:20,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228618392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:20,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:20,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:22:20,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683990288] [2021-08-13 08:22:20,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:22:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:22:20,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:22:20,418 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-08-13 08:22:20,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 37 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-08-13 08:22:20,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,501 INFO L129 PetriNetUnfolder]: 41/120 cut-off events. [2021-08-13 08:22:20,501 INFO L130 PetriNetUnfolder]: For 30/32 co-relation queries the response was YES. [2021-08-13 08:22:20,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 120 events. 41/120 cut-off events. For 30/32 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 457 event pairs, 6 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 283. Up to 35 conditions per place. [2021-08-13 08:22:20,505 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 21 selfloop transitions, 9 changer transitions 3/47 dead transitions. [2021-08-13 08:22:20,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 254 flow [2021-08-13 08:22:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:22:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:22:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2021-08-13 08:22:20,509 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8 [2021-08-13 08:22:20,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 100 transitions. [2021-08-13 08:22:20,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 100 transitions. [2021-08-13 08:22:20,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 100 transitions. [2021-08-13 08:22:20,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,511 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-08-13 08:22:20,511 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 47 transitions, 254 flow [2021-08-13 08:22:20,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,511 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:20,511 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:20,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 08:22:20,511 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1620880133, now seen corresponding path program 1 times [2021-08-13 08:22:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:20,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232974304] [2021-08-13 08:22:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 08:22:20,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:20,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:20,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232974304] [2021-08-13 08:22:20,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232974304] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:20,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:20,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:22:20,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896864088] [2021-08-13 08:22:20,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:22:20,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:22:20,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:22:20,556 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-08-13 08:22:20,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 47 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-08-13 08:22:20,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,629 INFO L129 PetriNetUnfolder]: 54/176 cut-off events. [2021-08-13 08:22:20,629 INFO L130 PetriNetUnfolder]: For 104/108 co-relation queries the response was YES. [2021-08-13 08:22:20,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 176 events. 54/176 cut-off events. For 104/108 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 739 event pairs, 6 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 514. Up to 63 conditions per place. [2021-08-13 08:22:20,633 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 42 selfloop transitions, 12 changer transitions 4/72 dead transitions. [2021-08-13 08:22:20,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 72 transitions, 520 flow [2021-08-13 08:22:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:22:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:22:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-08-13 08:22:20,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.816 [2021-08-13 08:22:20,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-08-13 08:22:20,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-08-13 08:22:20,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-08-13 08:22:20,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,641 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,641 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-08-13 08:22:20,641 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 72 transitions, 520 flow [2021-08-13 08:22:20,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,641 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:20,641 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:20,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 08:22:20,641 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1541971139, now seen corresponding path program 2 times [2021-08-13 08:22:20,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:20,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54151628] [2021-08-13 08:22:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:20,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 08:22:20,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 08:22:20,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:20,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54151628] [2021-08-13 08:22:20,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54151628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:20,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:20,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 08:22:20,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055721171] [2021-08-13 08:22:20,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 08:22:20,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 08:22:20,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 08:22:20,661 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-08-13 08:22:20,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 72 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-08-13 08:22:20,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,700 INFO L129 PetriNetUnfolder]: 52/158 cut-off events. [2021-08-13 08:22:20,701 INFO L130 PetriNetUnfolder]: For 200/206 co-relation queries the response was YES. [2021-08-13 08:22:20,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 158 events. 52/158 cut-off events. For 200/206 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 627 event pairs, 6 based on Foata normal form. 2/141 useless extension candidates. Maximal degree in co-relation 559. Up to 60 conditions per place. [2021-08-13 08:22:20,702 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 36 selfloop transitions, 17 changer transitions 4/71 dead transitions. [2021-08-13 08:22:20,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 626 flow [2021-08-13 08:22:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:22:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:22:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-08-13 08:22:20,703 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.792 [2021-08-13 08:22:20,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2021-08-13 08:22:20,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,704 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2021-08-13 08:22:20,704 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 71 transitions, 626 flow [2021-08-13 08:22:20,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,704 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:20,705 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:20,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 08:22:20,705 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:20,705 INFO L82 PathProgramCache]: Analyzing trace with hash 40992546, now seen corresponding path program 1 times [2021-08-13 08:22:20,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:20,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172405994] [2021-08-13 08:22:20,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:20,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 08:22:20,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:22:20,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:22:20,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:20,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172405994] [2021-08-13 08:22:20,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172405994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:20,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:20,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 08:22:20,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534018483] [2021-08-13 08:22:20,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 08:22:20,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 08:22:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 08:22:20,771 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-08-13 08:22:20,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 71 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-08-13 08:22:20,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,807 INFO L129 PetriNetUnfolder]: 82/236 cut-off events. [2021-08-13 08:22:20,807 INFO L130 PetriNetUnfolder]: For 337/382 co-relation queries the response was YES. [2021-08-13 08:22:20,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 236 events. 82/236 cut-off events. For 337/382 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1137 event pairs, 2 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 900. Up to 94 conditions per place. [2021-08-13 08:22:20,810 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 5 selfloop transitions, 9 changer transitions 5/77 dead transitions. [2021-08-13 08:22:20,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 678 flow [2021-08-13 08:22:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 08:22:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 08:22:20,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-08-13 08:22:20,812 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.824 [2021-08-13 08:22:20,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-08-13 08:22:20,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-08-13 08:22:20,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-08-13 08:22:20,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,814 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2021-08-13 08:22:20,814 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 77 transitions, 678 flow [2021-08-13 08:22:20,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,814 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 08:22:20,814 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 08:22:20,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 08:22:20,815 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 08:22:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 08:22:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash 893129176, now seen corresponding path program 2 times [2021-08-13 08:22:20,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 08:22:20,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151382990] [2021-08-13 08:22:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 08:22:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 08:22:20,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 08:22:20,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 08:22:20,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 08:22:20,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 08:22:20,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 08:22:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-13 08:22:20,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 08:22:20,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151382990] [2021-08-13 08:22:20,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151382990] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 08:22:20,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 08:22:20,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 08:22:20,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749760571] [2021-08-13 08:22:20,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 08:22:20,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 08:22:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 08:22:20,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 08:22:20,916 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-08-13 08:22:20,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 77 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 08:22:20,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-08-13 08:22:20,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 08:22:20,948 INFO L129 PetriNetUnfolder]: 81/237 cut-off events. [2021-08-13 08:22:20,948 INFO L130 PetriNetUnfolder]: For 427/482 co-relation queries the response was YES. [2021-08-13 08:22:20,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 237 events. 81/237 cut-off events. For 427/482 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1154 event pairs, 0 based on Foata normal form. 13/221 useless extension candidates. Maximal degree in co-relation 966. Up to 96 conditions per place. [2021-08-13 08:22:20,949 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2021-08-13 08:22:20,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 728 flow [2021-08-13 08:22:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 08:22:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 08:22:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2021-08-13 08:22:20,950 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-08-13 08:22:20,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 118 transitions. [2021-08-13 08:22:20,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 118 transitions. [2021-08-13 08:22:20,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 08:22:20,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 118 transitions. [2021-08-13 08:22:20,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,951 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,951 INFO L348 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2021-08-13 08:22:20,951 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 79 transitions, 728 flow [2021-08-13 08:22:20,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 08:22:20,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 08:31:41,371 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 8324 in 560417152581ns [2021-08-13 08:31:41,378 INFO L113 kiGriesValidityCheck]: 25#(or (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (<= (* 2 N) i1) (not v_np19_1) v_np1_1 (<= pos 0) v_np7_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (not v_np25_1) (not v_np23_1) (not v_np20_1) (= pos 0) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 0 pos) (not v_np19_1) (<= pos 0) v_np5_1 (not v_np0_1) (<= i2 i1) v_np22_1 (<= i1 i2) v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (<= 1 pos) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (<= pos 1) (not v_np18_1) (not v_np19_1) v_np1_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (not v_np25_1) (not v_np23_1) (not v_np20_1) v_np9_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (<= (* 2 N) i2) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (<= (* 2 N) i1) (not v_np19_1) (<= pos 0) (not v_np0_1) v_np22_1 v_np24_1) (and (not v_np25_1) (not v_np23_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) v_np19_1 (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np0_1) v_np22_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (<= (* 2 N) i1) (not v_np19_1) v_np1_1 (<= pos 0) v_np2_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np11_1 (not v_np14_1) (<= (+ i1 1) (* 2 N)) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 0 pos) (not v_np19_1) v_np1_1 (<= pos 0) (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (<= 1 pos) (<= (+ i1 1) (* 2 N)) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= pos 1) (not v_np18_1) (not v_np19_1) v_np1_1 v_np3_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (not v_np19_1) v_np1_1 (<= pos 0) (<= i2 i1) v_np23_1 v_np24_1 v_np0_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (not v_np19_1) v_np1_1 (<= pos 0) (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1 v_np20_1)) [2021-08-13 08:31:41,379 INFO L113 kiGriesValidityCheck]: 2#(or (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (<= (* 2 N) i1) (not v_np19_1) v_np1_1 (<= pos 0) v_np7_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (<= 1 pos) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (<= pos 1) (not v_np18_1) (not v_np19_1) v_np1_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (<= (* 2 N) i1) (not v_np19_1) v_np1_1 (<= pos 0) v_np2_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np11_1 (not v_np14_1) (<= (+ i1 1) (* 2 N)) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (<= 0 pos) (not v_np19_1) v_np1_1 (<= pos 0) (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (<= 1 pos) (<= (+ i1 1) (* 2 N)) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= pos 1) (not v_np18_1) (not v_np19_1) v_np1_1 v_np3_1 (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (not v_np19_1) v_np1_1 (<= pos 0) (<= i2 i1) v_np23_1 v_np24_1 v_np0_1) (and (<= (+ i2 1) (* 2 N)) (not v_np25_1) (not v_np22_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (not v_np2_1) (not v_np17_1) (not v_np21_1) (<= 0 pos) (not v_np18_1) (not v_np19_1) v_np1_1 (<= pos 0) (not v_np0_1) (<= i2 i1) v_np23_1 v_np24_1 v_np20_1)) [2021-08-13 08:31:41,396 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 27849848ns [2021-08-13 08:31:41,397 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid Owicki-Gries annotation at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-13 08:31:41,401 INFO L168 Benchmark]: Toolchain (without parser) took 562021.59 ms. Allocated memory was 196.1 MB in the beginning and 428.9 MB in the end (delta: 232.8 MB). Free memory was 177.1 MB in the beginning and 395.6 MB in the end (delta: -218.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-08-13 08:31:41,402 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 178.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 08:31:41,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.75 ms. Allocated memory is still 196.1 MB. Free memory was 177.1 MB in the beginning and 175.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 08:31:41,402 INFO L168 Benchmark]: Boogie Preprocessor took 13.74 ms. Allocated memory is still 196.1 MB. Free memory was 175.6 MB in the beginning and 174.6 MB in the end (delta: 975.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 08:31:41,403 INFO L168 Benchmark]: RCFGBuilder took 178.37 ms. Allocated memory is still 196.1 MB. Free memory was 174.6 MB in the beginning and 164.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-08-13 08:31:41,404 INFO L168 Benchmark]: TraceAbstraction took 561806.35 ms. Allocated memory was 196.1 MB in the beginning and 428.9 MB in the end (delta: 232.8 MB). Free memory was 163.6 MB in the beginning and 395.6 MB in the end (delta: -232.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. [2021-08-13 08:31:41,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 196.1 MB. Free memory is still 178.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.75 ms. Allocated memory is still 196.1 MB. Free memory was 177.1 MB in the beginning and 175.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.74 ms. Allocated memory is still 196.1 MB. Free memory was 175.6 MB in the beginning and 174.6 MB in the end (delta: 975.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 178.37 ms. Allocated memory is still 196.1 MB. Free memory was 174.6 MB in the beginning and 164.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 561806.35 ms. Allocated memory was 196.1 MB in the beginning and 428.9 MB in the end (delta: 232.8 MB). Free memory was 163.6 MB in the beginning and 395.6 MB in the end (delta: -232.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid Owicki-Gries annotation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid Owicki-Gries annotation: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...