/usr/bin/java -Xmx16000000000 -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/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 06:12:43,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 06:12:43,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 06:12:43,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 06:12:43,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 06:12:43,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 06:12:43,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 06:12:43,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 06:12:43,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 06:12:43,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 06:12:43,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 06:12:43,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 06:12:43,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 06:12:43,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 06:12:43,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 06:12:43,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 06:12:43,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 06:12:43,786 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 [2021-03-11 06:12:43,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 06:12:43,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 06:12:43,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 06:12:43,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 06:12:43,808 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 06:12:43,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 06:12:43,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 06:12:43,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 06:12:43,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 06:12:43,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 06:12:43,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 06:12:43,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 06:12:43,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 06:12:43,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 06:12:44,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 06:12:44,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 06:12:44,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 06:12:44,041 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 06:12:44,041 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 06:12:44,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-03-11 06:12:44,042 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-03-11 06:12:44,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 06:12:44,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 06:12:44,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 06:12:44,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 06:12:44,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 06:12:44,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 06:12:44,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 06:12:44,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 06:12:44,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 06:12:44,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/1) ... [2021-03-11 06:12:44,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 06:12:44,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 06:12:44,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 06:12:44,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 06:12:44,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (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 [2021-03-11 06:12:44,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 06:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 06:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 06:12:44,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 06:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 06:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 06:12:44,143 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 06:12:44,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 06:12:44,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 06:12:44,144 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 06:12:44,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 06:12:44,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 06:12:44,267 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:12:44 BoogieIcfgContainer [2021-03-11 06:12:44,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 06:12:44,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 06:12:44,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 06:12:44,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 06:12:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 06:12:44" (1/2) ... [2021-03-11 06:12:44,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67096ad9 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:12:44, skipping insertion in model container [2021-03-11 06:12:44,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:12:44" (2/2) ... [2021-03-11 06:12:44,271 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-03-11 06:12:44,274 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 06:12:44,277 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 06:12:44,277 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 06:12:44,297 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 06:12:44,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 06:12:44,320 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 06:12:44,321 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 06:12:44,321 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 06:12:44,321 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 06:12:44,321 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 06:12:44,321 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 06:12:44,321 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 06:12:44,321 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 06:12:44,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-03-11 06:12:44,343 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-11 06:12:44,343 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 06:12:44,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 06:12:44,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-03-11 06:12:44,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-03-11 06:12:44,356 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-11 06:12:44,356 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 06:12:44,356 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:44,357 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:44,357 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1562918420, now seen corresponding path program 1 times [2021-03-11 06:12:44,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:44,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832224233] [2021-03-11 06:12:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:44,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:44,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:44,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832224233] [2021-03-11 06:12:44,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:44,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:12:44,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309706419] [2021-03-11 06:12:44,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:12:44,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:44,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:12:44,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:12:44,610 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 31 [2021-03-11 06:12:44,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2021-03-11 06:12:44,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:44,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 31 [2021-03-11 06:12:44,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:44,724 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 06:12:44,724 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-11 06:12:44,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 59 events. 1/59 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 64. Up to 5 conditions per place. [2021-03-11 06:12:44,726 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 7 selfloop transitions, 7 changer transitions 2/37 dead transitions. [2021-03-11 06:12:44,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 118 flow [2021-03-11 06:12:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:12:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:12:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2021-03-11 06:12:44,733 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.842741935483871 [2021-03-11 06:12:44,733 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 209 transitions. [2021-03-11 06:12:44,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 209 transitions. [2021-03-11 06:12:44,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:44,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 209 transitions. [2021-03-11 06:12:44,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 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) [2021-03-11 06:12:44,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2021-03-11 06:12:44,741 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2021-03-11 06:12:44,742 INFO L185 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 8 states and 209 transitions. [2021-03-11 06:12:44,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 118 flow [2021-03-11 06:12:44,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 06:12:44,745 INFO L241 Difference]: Finished difference. Result has 40 places, 32 transitions, 96 flow [2021-03-11 06:12:44,747 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2021-03-11 06:12:44,747 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2021-03-11 06:12:44,747 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 96 flow [2021-03-11 06:12:44,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2021-03-11 06:12:44,747 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:44,747 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:44,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 06:12:44,748 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:44,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash -965493228, now seen corresponding path program 2 times [2021-03-11 06:12:44,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:44,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478815318] [2021-03-11 06:12:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:44,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 06:12:44,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:44,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478815318] [2021-03-11 06:12:44,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:44,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:12:44,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982785295] [2021-03-11 06:12:44,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:12:44,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:12:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:12:44,817 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 31 [2021-03-11 06:12:44,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2021-03-11 06:12:44,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:44,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 31 [2021-03-11 06:12:44,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:44,904 INFO L129 PetriNetUnfolder]: 1/51 cut-off events. [2021-03-11 06:12:44,904 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-11 06:12:44,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 51 events. 1/51 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2021-03-11 06:12:44,905 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 4 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2021-03-11 06:12:44,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 138 flow [2021-03-11 06:12:44,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 06:12:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 06:12:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2021-03-11 06:12:44,911 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8306451612903226 [2021-03-11 06:12:44,911 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 206 transitions. [2021-03-11 06:12:44,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 206 transitions. [2021-03-11 06:12:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 206 transitions. [2021-03-11 06:12:44,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 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) [2021-03-11 06:12:44,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2021-03-11 06:12:44,919 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2021-03-11 06:12:44,920 INFO L185 Difference]: Start difference. First operand has 40 places, 32 transitions, 96 flow. Second operand 8 states and 206 transitions. [2021-03-11 06:12:44,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 138 flow [2021-03-11 06:12:44,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 134 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-11 06:12:44,924 INFO L241 Difference]: Finished difference. Result has 45 places, 29 transitions, 95 flow [2021-03-11 06:12:44,924 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2021-03-11 06:12:44,924 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2021-03-11 06:12:44,924 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 95 flow [2021-03-11 06:12:44,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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) [2021-03-11 06:12:44,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:44,925 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:44,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 06:12:44,925 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1548907132, now seen corresponding path program 3 times [2021-03-11 06:12:44,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:44,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606264994] [2021-03-11 06:12:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:44,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:44,962 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 06:12:44,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:44,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:44,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:44,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:44,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606264994] [2021-03-11 06:12:44,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:44,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 06:12:44,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907973875] [2021-03-11 06:12:44,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 06:12:44,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:44,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 06:12:44,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 06:12:44,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-03-11 06:12:44,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-03-11 06:12:44,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:44,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-03-11 06:12:44,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,054 INFO L129 PetriNetUnfolder]: 15/105 cut-off events. [2021-03-11 06:12:45,055 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2021-03-11 06:12:45,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 105 events. 15/105 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 372 event pairs, 3 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 186. Up to 25 conditions per place. [2021-03-11 06:12:45,057 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 12 selfloop transitions, 5 changer transitions 4/41 dead transitions. [2021-03-11 06:12:45,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 161 flow [2021-03-11 06:12:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 06:12:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 06:12:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2021-03-11 06:12:45,059 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2021-03-11 06:12:45,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2021-03-11 06:12:45,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2021-03-11 06:12:45,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2021-03-11 06:12:45,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2021-03-11 06:12:45,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2021-03-11 06:12:45,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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) [2021-03-11 06:12:45,061 INFO L185 Difference]: Start difference. First operand has 45 places, 29 transitions, 95 flow. Second operand 6 states and 148 transitions. [2021-03-11 06:12:45,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 161 flow [2021-03-11 06:12:45,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 138 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-03-11 06:12:45,065 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 103 flow [2021-03-11 06:12:45,065 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-11 06:12:45,065 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2021-03-11 06:12:45,065 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 103 flow [2021-03-11 06:12:45,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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) [2021-03-11 06:12:45,066 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,066 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 06:12:45,067 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,067 INFO L82 PathProgramCache]: Analyzing trace with hash 922317040, now seen corresponding path program 4 times [2021-03-11 06:12:45,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291149357] [2021-03-11 06:12:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291149357] [2021-03-11 06:12:45,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:12:45,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785393852] [2021-03-11 06:12:45,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:12:45,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:12:45,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:12:45,092 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 31 [2021-03-11 06:12:45,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-03-11 06:12:45,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 31 [2021-03-11 06:12:45,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,102 INFO L129 PetriNetUnfolder]: 2/63 cut-off events. [2021-03-11 06:12:45,102 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 06:12:45,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 63 events. 2/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 169 event pairs, 0 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 36. Up to 9 conditions per place. [2021-03-11 06:12:45,103 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 2 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2021-03-11 06:12:45,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 111 flow [2021-03-11 06:12:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:12:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:12:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2021-03-11 06:12:45,105 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2021-03-11 06:12:45,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2021-03-11 06:12:45,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,106 INFO L185 Difference]: Start difference. First operand has 41 places, 32 transitions, 103 flow. Second operand 3 states and 83 transitions. [2021-03-11 06:12:45,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 111 flow [2021-03-11 06:12:45,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 106 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:45,108 INFO L241 Difference]: Finished difference. Result has 40 places, 32 transitions, 106 flow [2021-03-11 06:12:45,108 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2021-03-11 06:12:45,108 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2021-03-11 06:12:45,108 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 106 flow [2021-03-11 06:12:45,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-03-11 06:12:45,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,109 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 06:12:45,111 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1839837008, now seen corresponding path program 5 times [2021-03-11 06:12:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862589787] [2021-03-11 06:12:45,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:45,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862589787] [2021-03-11 06:12:45,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 06:12:45,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168687499] [2021-03-11 06:12:45,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 06:12:45,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 06:12:45,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 06:12:45,143 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 31 [2021-03-11 06:12:45,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-03-11 06:12:45,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 31 [2021-03-11 06:12:45,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,152 INFO L129 PetriNetUnfolder]: 3/71 cut-off events. [2021-03-11 06:12:45,152 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 06:12:45,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 71 events. 3/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 1 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2021-03-11 06:12:45,152 INFO L132 encePairwiseOnDemand]: 28/31 looper letters, 2 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2021-03-11 06:12:45,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 114 flow [2021-03-11 06:12:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 06:12:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 06:12:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2021-03-11 06:12:45,153 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8924731182795699 [2021-03-11 06:12:45,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 83 transitions. [2021-03-11 06:12:45,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2021-03-11 06:12:45,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 06:12:45,154 INFO L185 Difference]: Start difference. First operand has 40 places, 32 transitions, 106 flow. Second operand 3 states and 83 transitions. [2021-03-11 06:12:45,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 114 flow [2021-03-11 06:12:45,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:45,155 INFO L241 Difference]: Finished difference. Result has 41 places, 32 transitions, 110 flow [2021-03-11 06:12:45,155 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2021-03-11 06:12:45,156 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2021-03-11 06:12:45,156 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 110 flow [2021-03-11 06:12:45,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-03-11 06:12:45,156 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,156 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 06:12:45,156 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2101484300, now seen corresponding path program 6 times [2021-03-11 06:12:45,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078364102] [2021-03-11 06:12:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 06:12:45,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 06:12:45,207 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-11 06:12:45,208 INFO L147 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size 9 [2021-03-11 06:12:45,230 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-11 06:12:45,233 INFO L147 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size 12 [2021-03-11 06:12:45,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:45,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078364102] [2021-03-11 06:12:45,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:12:45,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030343465] [2021-03-11 06:12:45,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:12:45,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:12:45,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:12:45,250 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-03-11 06:12:45,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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) [2021-03-11 06:12:45,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-03-11 06:12:45,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,293 INFO L129 PetriNetUnfolder]: 8/81 cut-off events. [2021-03-11 06:12:45,293 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-11 06:12:45,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 81 events. 8/81 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 239 event pairs, 6 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 112. Up to 24 conditions per place. [2021-03-11 06:12:45,294 INFO L132 encePairwiseOnDemand]: 26/31 looper letters, 8 selfloop transitions, 2 changer transitions 5/35 dead transitions. [2021-03-11 06:12:45,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 35 transitions, 144 flow [2021-03-11 06:12:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:12:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:12:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2021-03-11 06:12:45,296 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7557603686635944 [2021-03-11 06:12:45,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 164 transitions. [2021-03-11 06:12:45,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 164 transitions. [2021-03-11 06:12:45,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 164 transitions. [2021-03-11 06:12:45,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 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) [2021-03-11 06:12:45,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2021-03-11 06:12:45,297 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2021-03-11 06:12:45,297 INFO L185 Difference]: Start difference. First operand has 41 places, 32 transitions, 110 flow. Second operand 7 states and 164 transitions. [2021-03-11 06:12:45,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 35 transitions, 144 flow [2021-03-11 06:12:45,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 138 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 06:12:45,300 INFO L241 Difference]: Finished difference. Result has 48 places, 29 transitions, 100 flow [2021-03-11 06:12:45,300 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2021-03-11 06:12:45,300 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2021-03-11 06:12:45,300 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 100 flow [2021-03-11 06:12:45,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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) [2021-03-11 06:12:45,300 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 06:12:45,300 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 06:12:45,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 06:12:45,301 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 06:12:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 06:12:45,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2099197000, now seen corresponding path program 7 times [2021-03-11 06:12:45,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 06:12:45,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581218338] [2021-03-11 06:12:45,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 06:12:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 06:12:45,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 06:12:45,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 06:12:45,363 INFO L142 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-03-11 06:12:45,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 06:12:45,372 INFO L142 QuantifierPusher]: treesize reduction 10, result has 52.4 percent of original size [2021-03-11 06:12:45,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 06:12:45,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 06:12:45,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 06:12:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 06:12:45,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581218338] [2021-03-11 06:12:45,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 06:12:45,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 06:12:45,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034127876] [2021-03-11 06:12:45,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 06:12:45,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 06:12:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 06:12:45,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 06:12:45,381 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 31 [2021-03-11 06:12:45,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 100 flow. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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) [2021-03-11 06:12:45,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 06:12:45,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 31 [2021-03-11 06:12:45,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 06:12:45,413 INFO L129 PetriNetUnfolder]: 5/41 cut-off events. [2021-03-11 06:12:45,413 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-11 06:12:45,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 41 events. 5/41 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 2 based on Foata normal form. 4/45 useless extension candidates. Maximal degree in co-relation 95. Up to 8 conditions per place. [2021-03-11 06:12:45,414 INFO L132 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-03-11 06:12:45,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 111 flow [2021-03-11 06:12:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 06:12:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 06:12:45,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2021-03-11 06:12:45,414 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2021-03-11 06:12:45,415 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 161 transitions. [2021-03-11 06:12:45,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 161 transitions. [2021-03-11 06:12:45,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 06:12:45,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 161 transitions. [2021-03-11 06:12:45,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2021-03-11 06:12:45,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2021-03-11 06:12:45,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 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) [2021-03-11 06:12:45,416 INFO L185 Difference]: Start difference. First operand has 48 places, 29 transitions, 100 flow. Second operand 7 states and 161 transitions. [2021-03-11 06:12:45,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 111 flow [2021-03-11 06:12:45,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 95 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-03-11 06:12:45,416 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-11 06:12:45,416 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-11 06:12:45,417 INFO L335 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2021-03-11 06:12:45,417 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2021-03-11 06:12:45,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 7 states have internal predecessors, (156), 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) [2021-03-11 06:12:45,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 06:12:45,420 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:12:45 BasicIcfg [2021-03-11 06:12:45,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 06:12:45,421 INFO L168 Benchmark]: Toolchain (without parser) took 1345.47 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 236.7 MB in the beginning and 281.3 MB in the end (delta: -44.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.0 GB. [2021-03-11 06:12:45,421 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 06:12:45,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:12:45,422 INFO L168 Benchmark]: Boogie Preprocessor took 8.33 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.8 MB in the end (delta: 930.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 06:12:45,422 INFO L168 Benchmark]: RCFGBuilder took 161.16 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 238.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-11 06:12:45,422 INFO L168 Benchmark]: TraceAbstraction took 1152.21 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 238.3 MB in the beginning and 281.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.0 GB. [2021-03-11 06:12:45,423 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 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.59 ms. Allocated memory is still 255.9 MB. Free memory was 236.2 MB in the beginning and 234.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.33 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.8 MB in the end (delta: 930.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 161.16 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 238.8 MB in the end (delta: -5.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1152.21 ms. Allocated memory was 255.9 MB in the beginning and 337.6 MB in the end (delta: 81.8 MB). Free memory was 238.3 MB in the beginning and 281.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1099.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 451.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 26.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 37 SDslu, 9 SDs, 0 SdLazy, 208 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 290.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=5, InterpolantAutomatonStates: 42, 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: 12.9ms SsaConstructionTime, 61.8ms SatisfiabilityAnalysisTime, 444.2ms InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...