/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:45:42,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:45:42,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:45:42,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 09:45:42,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:45:42,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:45:42,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:45:42,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:45:42,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:45:42,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:45:42,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:45:42,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:45:42,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:45:42,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:45:42,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:45:42,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:45:42,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:45:42,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 09:45:42,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 09:45:42,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 09:45:42,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 09:45:42,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 09:45:42,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 09:45:42,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 09:45:42,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2021-06-13 09:45:42,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 09:45:42,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:45:42,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:45:42,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:45:42,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:45:42,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:45:42,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:45:42,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:45:42,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:45:42,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:45:42,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:45:42,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:45:42,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:45:42,634 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:45:42,635 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:45:42,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl [2021-06-13 09:45:42,635 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-2.wvr.bpl' [2021-06-13 09:45:42,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:45:42,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:45:42,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:45:42,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:45:42,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:45:42,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:45:42,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:45:42,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:45:42,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:45:42,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... [2021-06-13 09:45:42,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:45:42,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:45:42,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:45:42,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:45:42,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:45:42,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:45:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:45:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:45:42,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:45:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:45:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:45:42,743 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:45:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:45:42,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:45:42,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:45:42,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:45:42,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:45:42,887 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:45:42 BoogieIcfgContainer [2021-06-13 09:45:42,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:45:42,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:45:42,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:45:42,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:45:42,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:45:42" (1/2) ... [2021-06-13 09:45:42,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cecee21 and model type ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:45:42, skipping insertion in model container [2021-06-13 09:45:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:45:42" (2/2) ... [2021-06-13 09:45:42,893 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-2.wvr.bpl [2021-06-13 09:45:42,896 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:45:42,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:45:42,897 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:45:42,944 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-13 09:45:42,977 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 09:45:42,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:45:42,998 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:45:42,998 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:45:42,998 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:45:42,998 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:45:42,999 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:45:42,999 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:45:42,999 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:45:43,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 22 transitions, 60 flow [2021-06-13 09:45:43,024 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-13 09:45:43,025 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:45:43,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 0/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 09:45:43,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 22 transitions, 60 flow [2021-06-13 09:45:43,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions, 48 flow [2021-06-13 09:45:43,039 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-06-13 09:45:43,039 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:45:43,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:45:43,040 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:45:43,040 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:45:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:45:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1519237959, now seen corresponding path program 1 times [2021-06-13 09:45:43,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:45:43,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141433962] [2021-06-13 09:45:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:45:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:45:43,145 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 09:45:43,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 09:45:43,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:45:43,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-13 09:45:43,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:45:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:45:43,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:45:43,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141433962] [2021-06-13 09:45:43,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141433962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:45:43,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:45:43,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:45:43,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139716941] [2021-06-13 09:45:43,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:45:43,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:45:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:45:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:45:43,220 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 22 [2021-06-13 09:45:43,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:45:43,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 22 [2021-06-13 09:45:43,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:45:43,286 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-06-13 09:45:43,286 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 09:45:43,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 43 events. 5/43 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 2 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 56. Up to 12 conditions per place. [2021-06-13 09:45:43,288 INFO L132 encePairwiseOnDemand]: 15/22 looper letters, 5 selfloop transitions, 5 changer transitions 2/23 dead transitions. [2021-06-13 09:45:43,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 23 transitions, 82 flow [2021-06-13 09:45:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:45:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:45:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-06-13 09:45:43,296 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-06-13 09:45:43,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:45:43,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,309 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,310 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 48 flow. Second operand 5 states and 83 transitions. [2021-06-13 09:45:43,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 23 transitions, 82 flow [2021-06-13 09:45:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 09:45:43,319 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 70 flow [2021-06-13 09:45:43,321 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2021-06-13 09:45:43,321 INFO L335 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2021-06-13 09:45:43,322 INFO L482 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 70 flow [2021-06-13 09:45:43,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:45:43,322 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:45:43,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:45:43,322 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:45:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:45:43,325 INFO L82 PathProgramCache]: Analyzing trace with hash -642417211, now seen corresponding path program 2 times [2021-06-13 09:45:43,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:45:43,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515498670] [2021-06-13 09:45:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:45:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:45:43,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:45:43,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:45:43,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:45:43,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:45:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:45:43,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:45:43,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515498670] [2021-06-13 09:45:43,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515498670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:45:43,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:45:43,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:45:43,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428514433] [2021-06-13 09:45:43,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:45:43,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:45:43,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:45:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:45:43,383 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 22 [2021-06-13 09:45:43,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:45:43,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 22 [2021-06-13 09:45:43,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:45:43,435 INFO L129 PetriNetUnfolder]: 4/33 cut-off events. [2021-06-13 09:45:43,435 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2021-06-13 09:45:43,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 33 events. 4/33 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 2 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 59. Up to 10 conditions per place. [2021-06-13 09:45:43,436 INFO L132 encePairwiseOnDemand]: 16/22 looper letters, 5 selfloop transitions, 4 changer transitions 3/23 dead transitions. [2021-06-13 09:45:43,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 100 flow [2021-06-13 09:45:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:45:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:45:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2021-06-13 09:45:43,440 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-06-13 09:45:43,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:45:43,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 83 transitions. [2021-06-13 09:45:43,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,443 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 70 flow. Second operand 5 states and 83 transitions. [2021-06-13 09:45:43,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 100 flow [2021-06-13 09:45:43,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 88 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-06-13 09:45:43,449 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 71 flow [2021-06-13 09:45:43,449 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=71, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-06-13 09:45:43,449 INFO L335 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2021-06-13 09:45:43,453 INFO L482 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 71 flow [2021-06-13 09:45:43,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,453 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:45:43,454 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:45:43,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:45:43,454 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:45:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:45:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash -803227735, now seen corresponding path program 3 times [2021-06-13 09:45:43,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:45:43,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484038518] [2021-06-13 09:45:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:45:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:45:43,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:45:43,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:45:43,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:45:43,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:45:43,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:45:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:45:43,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:45:43,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484038518] [2021-06-13 09:45:43,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484038518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:45:43,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:45:43,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:45:43,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126968795] [2021-06-13 09:45:43,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:45:43,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:45:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:45:43,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:45:43,495 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 22 [2021-06-13 09:45:43,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:45:43,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 22 [2021-06-13 09:45:43,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:45:43,510 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-06-13 09:45:43,511 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-06-13 09:45:43,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 8 events. 1/8 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/10 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2021-06-13 09:45:43,511 INFO L132 encePairwiseOnDemand]: 18/22 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-06-13 09:45:43,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 40 flow [2021-06-13 09:45:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:45:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:45:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2021-06-13 09:45:43,512 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2021-06-13 09:45:43,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 76 transitions. [2021-06-13 09:45:43,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 76 transitions. [2021-06-13 09:45:43,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:45:43,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 76 transitions. [2021-06-13 09:45:43,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:45:43,514 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 71 flow. Second operand 5 states and 76 transitions. [2021-06-13 09:45:43,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 40 flow [2021-06-13 09:45:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-06-13 09:45:43,519 INFO L241 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2021-06-13 09:45:43,519 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2021-06-13 09:45:43,520 INFO L335 CegarLoopForPetriNet]: 25 programPoint places, -10 predicate places. [2021-06-13 09:45:43,520 INFO L482 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2021-06-13 09:45:43,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2021-06-13 09:45:43,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:45:43,521 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 09:45:43,523 INFO L202 PluginConnector]: Adding new model ticket-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 09:45:43 BasicIcfg [2021-06-13 09:45:43,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 09:45:43,524 INFO L168 Benchmark]: Toolchain (without parser) took 859.58 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 184.7 MB in the end (delta: -3.7 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-06-13 09:45:43,525 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 182.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:45:43,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.16 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 179.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:45:43,525 INFO L168 Benchmark]: Boogie Preprocessor took 9.08 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 178.7 MB in the end (delta: 814.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 09:45:43,526 INFO L168 Benchmark]: RCFGBuilder took 193.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 167.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 09:45:43,526 INFO L168 Benchmark]: TraceAbstraction took 634.85 ms. Allocated memory is still 202.4 MB. Free memory was 167.1 MB in the beginning and 184.7 MB in the end (delta: -17.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2021-06-13 09:45:43,527 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 0.11 ms. Allocated memory is still 202.4 MB. Free memory is still 182.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.16 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 179.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.08 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 178.7 MB in the end (delta: 814.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 193.06 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 167.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 634.85 ms. Allocated memory is still 202.4 MB. Free memory was 167.1 MB in the beginning and 184.7 MB in the end (delta: -17.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 532.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 198.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 2 SDs, 0 SdLazy, 56 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.6ms SsaConstructionTime, 43.9ms SatisfiabilityAnalysisTime, 148.1ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...