/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 02:51:13,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 02:51:13,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 02:51:13,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 02:51:13,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 02:51:13,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 02:51:13,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 02:51:13,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 02:51:13,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 02:51:13,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 02:51:13,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 02:51:13,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 02:51:13,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 02:51:13,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 02:51:13,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 02:51:13,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 02:51:13,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 02:51:13,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 02:51:13,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 02:51:13,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 02:51:13,476 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.epf [2021-08-13 02:51:13,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 02:51:13,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 02:51:13,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 02:51:13,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 02:51:13,507 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 02:51:13,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 02:51:13,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 02:51:13,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 02:51:13,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 02:51:13,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 02:51:13,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 02:51:13,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 02:51:13,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 02:51:13,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 02:51:13,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 02:51:13,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 02:51:13,510 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 02:51:13,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 02:51:13,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 02:51:13,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 02:51:13,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 02:51:13,727 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 02:51:13,728 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 02:51:13,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2021-08-13 02:51:13,729 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2021-08-13 02:51:13,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 02:51:13,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 02:51:13,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 02:51:13,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 02:51:13,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 02:51:13,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 02:51:13,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 02:51:13,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 02:51:13,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 02:51:13,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/1) ... [2021-08-13 02:51:13,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 02:51:13,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 02:51:13,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 02:51:13,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 02:51:13,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (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 02:51:13,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 02:51:13,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 02:51:13,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 02:51:13,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 02:51:13,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 02:51:13,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 02:51:13,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 02:51:13,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 02:51:13,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 02:51:13,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 02:51:13,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 02:51:13,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 02:51:13,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-13 02:51:13,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-13 02:51:13,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-13 02:51:13,879 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 02:51:13,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 02:51:13,981 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-13 02:51:13,982 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:51:13 BoogieIcfgContainer [2021-08-13 02:51:13,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 02:51:13,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 02:51:13,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 02:51:13,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 02:51:13,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:51:13" (1/2) ... [2021-08-13 02:51:13,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334540f0 and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:51:13, skipping insertion in model container [2021-08-13 02:51:13,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:51:13" (2/2) ... [2021-08-13 02:51:13,987 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.bpl [2021-08-13 02:51:13,990 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 02:51:13,990 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 02:51:13,991 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 02:51:14,039 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-13 02:51:14,054 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 02:51:14,071 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 02:51:14,071 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 02:51:14,072 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 02:51:14,072 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 02:51:14,072 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 02:51:14,072 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 02:51:14,072 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 02:51:14,072 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 02:51:14,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 100 flow [2021-08-13 02:51:14,117 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-08-13 02:51:14,117 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 02:51:14,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-08-13 02:51:14,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 100 flow [2021-08-13 02:51:14,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2021-08-13 02:51:14,135 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-08-13 02:51:14,135 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-08-13 02:51:14,135 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:51:14,136 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:51:14,136 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:51:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:51:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash -823872310, now seen corresponding path program 1 times [2021-08-13 02:51:14,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:51:14,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15458215] [2021-08-13 02:51:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:51:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:51:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:51:14,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:51:14,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 02:51:14,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 02:51:14,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:51:14,328 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 02:51:14,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:51:14,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15458215] [2021-08-13 02:51:14,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15458215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:51:14,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:51:14,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 02:51:14,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481620354] [2021-08-13 02:51:14,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 02:51:14,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:51:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 02:51:14,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 02:51:14,348 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-08-13 02:51:14,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:51:14,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-08-13 02:51:14,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:51:14,507 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [17#thread1FINALtrue, 49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, 40#true, 42#true, 10#L60true, 28#L26true, 44#true, 29#L36true, 46#true]) [2021-08-13 02:51:14,507 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,508 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,508 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,508 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,508 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [17#thread1FINALtrue, 40#true, 42#true, 10#L60true, 11#L49true, 28#L26true, 44#true, 29#L36true, 46#true, 47#true]) [2021-08-13 02:51:14,509 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,509 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,509 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,509 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,527 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, 40#true, 42#true, 10#L60true, 28#L26true, 44#true, 29#L36true, 46#true, 15#L17true]) [2021-08-13 02:51:14,527 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,527 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,527 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,528 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,528 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [40#true, 42#true, 10#L60true, 11#L49true, 28#L26true, 44#true, 29#L36true, 46#true, 47#true, 15#L17true]) [2021-08-13 02:51:14,528 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,528 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,528 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,528 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,558 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [49#(and (<= 0 x_1) (<= x_1 0)), 34#L18true, 7#thread4FINALtrue, 40#true, 42#true, 10#L60true, 28#L26true, 44#true, 29#L36true, 46#true]) [2021-08-13 02:51:14,559 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [34#L18true, 40#true, 42#true, 10#L60true, 11#L49true, 28#L26true, 44#true, 29#L36true, 46#true, 47#true]) [2021-08-13 02:51:14,559 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-08-13 02:51:14,559 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,604 INFO L129 PetriNetUnfolder]: 837/1304 cut-off events. [2021-08-13 02:51:14,604 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-08-13 02:51:14,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 1304 events. 837/1304 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6618 event pairs, 250 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 2448. Up to 627 conditions per place. [2021-08-13 02:51:14,617 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 29 selfloop transitions, 10 changer transitions 4/56 dead transitions. [2021-08-13 02:51:14,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 222 flow [2021-08-13 02:51:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 02:51:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 02:51:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2021-08-13 02:51:14,625 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2021-08-13 02:51:14,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2021-08-13 02:51:14,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2021-08-13 02:51:14,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:51:14,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2021-08-13 02:51:14,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,635 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2021-08-13 02:51:14,635 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 56 transitions, 222 flow [2021-08-13 02:51:14,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,635 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:51:14,635 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:51:14,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 02:51:14,636 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:51:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:51:14,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1542987992, now seen corresponding path program 2 times [2021-08-13 02:51:14,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:51:14,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535290564] [2021-08-13 02:51:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:51:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:51:14,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:51:14,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:51:14,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 02:51:14,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 02:51:14,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:51:14,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:51:14,684 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 02:51:14,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:51:14,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535290564] [2021-08-13 02:51:14,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535290564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:51:14,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:51:14,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 02:51:14,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175141018] [2021-08-13 02:51:14,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 02:51:14,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:51:14,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 02:51:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 02:51:14,687 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-08-13 02:51:14,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 56 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:51:14,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-08-13 02:51:14,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:51:14,792 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][23], [55#true, 40#true, 10#L60true, 42#true, 11#L49true, 44#true, 28#L26true, 29#L36true, 46#true, 15#L17true, 47#true]) [2021-08-13 02:51:14,792 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,792 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,792 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,792 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,793 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][24], [49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, 55#true, 40#true, 10#L60true, 42#true, 44#true, 28#L26true, 29#L36true, 46#true, 15#L17true]) [2021-08-13 02:51:14,793 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,793 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,793 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,793 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,800 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][25], [17#thread1FINALtrue, 40#true, 57#(and (<= x_0 0) (<= 0 x_0)), 10#L60true, 42#true, 11#L49true, 44#true, 28#L26true, 29#L36true, 46#true, 47#true]) [2021-08-13 02:51:14,800 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,800 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,800 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,800 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,801 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][26], [49#(and (<= 0 x_1) (<= x_1 0)), 17#thread1FINALtrue, 7#thread4FINALtrue, 40#true, 10#L60true, 42#true, 60#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1))), 44#true, 28#L26true, 29#L36true, 46#true]) [2021-08-13 02:51:14,801 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,801 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,801 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-08-13 02:51:14,801 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-08-13 02:51:14,812 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][23], [34#L18true, 55#true, 40#true, 10#L60true, 42#true, 11#L49true, 44#true, 28#L26true, 29#L36true, 46#true, 47#true]) [2021-08-13 02:51:14,812 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-08-13 02:51:14,812 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,812 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,812 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-08-13 02:51:14,812 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][24], [49#(and (<= 0 x_1) (<= x_1 0)), 34#L18true, 7#thread4FINALtrue, 55#true, 40#true, 10#L60true, 42#true, 44#true, 28#L26true, 29#L36true, 46#true]) [2021-08-13 02:51:14,812 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-08-13 02:51:14,813 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,813 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-08-13 02:51:14,813 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-08-13 02:51:14,865 INFO L129 PetriNetUnfolder]: 999/1649 cut-off events. [2021-08-13 02:51:14,866 INFO L130 PetriNetUnfolder]: For 94/240 co-relation queries the response was YES. [2021-08-13 02:51:14,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 1649 events. 999/1649 cut-off events. For 94/240 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9679 event pairs, 154 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 4397. Up to 756 conditions per place. [2021-08-13 02:51:14,870 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2021-08-13 02:51:14,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 96 transitions, 552 flow [2021-08-13 02:51:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 02:51:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 02:51:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2021-08-13 02:51:14,874 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2021-08-13 02:51:14,874 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2021-08-13 02:51:14,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2021-08-13 02:51:14,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:51:14,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2021-08-13 02:51:14,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,879 INFO L348 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2021-08-13 02:51:14,879 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 96 transitions, 552 flow [2021-08-13 02:51:14,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:51:14,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown