/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:22:49,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:22:49,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:22:49,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:22:49,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-12 00:22:49,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-12 00:22:49,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-12 00:22:49,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-12 00:22:49,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-12 00:22:49,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-12 00:22:49,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-12 00:22:49,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-12 00:22:49,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-12 00:22:49,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-12 00:22:49,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-12 00:22:49,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-12 00:22:49,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-12 00:22:49,604 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-SemanticLbe.epf [2021-03-12 00:22:49,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:22:49,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:22:49,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:22:49,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:22:49,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:22:49,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:22:49,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:22:49,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:22:49,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:22:49,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:22:49,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:22:49,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:22:49,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:22:49,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:22:49,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:22:49,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:22:49,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:22:49,843 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:22:49,844 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:22:49,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl [2021-03-12 00:22:49,845 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl' [2021-03-12 00:22:49,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:22:49,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:22:49,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:22:49,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:22:49,892 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:22:49,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:22:49,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:22:49,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:22:49,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:22:49,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/1) ... [2021-03-12 00:22:49,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:22:49,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:22:49,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:22:49,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:22:49,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (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 [2021-03-12 00:22:49,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:22:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:22:49,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:22:49,976 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:22:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:22:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:22:49,977 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:22:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:22:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:22:49,977 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:22:50,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:22:50,150 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:22:50,151 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:22:50 BoogieIcfgContainer [2021-03-12 00:22:50,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:22:50,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:22:50,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:22:50,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:22:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:22:49" (1/2) ... [2021-03-12 00:22:50,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bdefe3 and model type misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:22:50, skipping insertion in model container [2021-03-12 00:22:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:22:50" (2/2) ... [2021-03-12 00:22:50,155 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3.wvr.bpl [2021-03-12 00:22:50,158 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:22:50,160 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:22:50,161 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:22:50,198 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 00:22:50,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-12 00:22:50,222 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:22:50,222 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:22:50,222 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:22:50,222 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:22:50,222 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:22:50,222 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:22:50,222 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:22:50,223 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:22:50,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 86 flow [2021-03-12 00:22:50,245 INFO L129 PetriNetUnfolder]: 8/33 cut-off events. [2021-03-12 00:22:50,245 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:22:50,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 8/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2021-03-12 00:22:50,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 86 flow [2021-03-12 00:22:50,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2021-03-12 00:22:50,253 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:22:50,260 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 31 transitions, 74 flow [2021-03-12 00:22:50,261 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 31 transitions, 74 flow [2021-03-12 00:22:50,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 31 transitions, 74 flow [2021-03-12 00:22:50,268 INFO L129 PetriNetUnfolder]: 8/31 cut-off events. [2021-03-12 00:22:50,268 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:22:50,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 8/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 27. Up to 4 conditions per place. [2021-03-12 00:22:50,269 INFO L116 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-12 00:22:51,145 INFO L131 LiptonReduction]: Checked pairs total: 274 [2021-03-12 00:22:51,145 INFO L133 LiptonReduction]: Total number of compositions: 28 [2021-03-12 00:22:51,146 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 895 [2021-03-12 00:22:51,154 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2021-03-12 00:22:51,155 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:22:51,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:51,155 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:51,156 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash 298871254, now seen corresponding path program 1 times [2021-03-12 00:22:51,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:51,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940433169] [2021-03-12 00:22:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:51,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:51,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940433169] [2021-03-12 00:22:51,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:22:51,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 00:22:51,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116399766] [2021-03-12 00:22:51,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:22:51,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:22:51,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:22:51,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 63 [2021-03-12 00:22:51,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-03-12 00:22:51,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:51,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 63 [2021-03-12 00:22:51,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:51,329 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-12 00:22:51,329 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-12 00:22:51,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 11 events. 2/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 11. Up to 4 conditions per place. [2021-03-12 00:22:51,330 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 2 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2021-03-12 00:22:51,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 42 flow [2021-03-12 00:22:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:22:51,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:22:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2021-03-12 00:22:51,340 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8042328042328042 [2021-03-12 00:22:51,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:51,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-03-12 00:22:51,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2021-03-12 00:22:51,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2021-03-12 00:22:51,354 INFO L185 Difference]: Start difference. First operand has 15 places, 10 transitions, 32 flow. Second operand 3 states and 152 transitions. [2021-03-12 00:22:51,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 42 flow [2021-03-12 00:22:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:22:51,357 INFO L241 Difference]: Finished difference. Result has 14 places, 11 transitions, 36 flow [2021-03-12 00:22:51,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2021-03-12 00:22:51,359 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2021-03-12 00:22:51,360 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 36 flow [2021-03-12 00:22:51,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-03-12 00:22:51,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:51,360 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:51,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:22:51,360 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:51,361 INFO L82 PathProgramCache]: Analyzing trace with hash 443221261, now seen corresponding path program 1 times [2021-03-12 00:22:51,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:51,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102873441] [2021-03-12 00:22:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:51,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 00:22:51,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102873441] [2021-03-12 00:22:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:22:51,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 00:22:51,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363977550] [2021-03-12 00:22:51,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 00:22:51,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 00:22:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 00:22:51,397 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 63 [2021-03-12 00:22:51,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-03-12 00:22:51,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:51,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 63 [2021-03-12 00:22:51,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:51,410 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-12 00:22:51,410 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-12 00:22:51,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 13. Up to 4 conditions per place. [2021-03-12 00:22:51,411 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 2 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2021-03-12 00:22:51,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 46 flow [2021-03-12 00:22:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 00:22:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-12 00:22:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2021-03-12 00:22:51,415 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8042328042328042 [2021-03-12 00:22:51,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:51,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 152 transitions. [2021-03-12 00:22:51,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-03-12 00:22:51,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2021-03-12 00:22:51,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2021-03-12 00:22:51,416 INFO L185 Difference]: Start difference. First operand has 14 places, 11 transitions, 36 flow. Second operand 3 states and 152 transitions. [2021-03-12 00:22:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 46 flow [2021-03-12 00:22:51,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 44 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:22:51,417 INFO L241 Difference]: Finished difference. Result has 16 places, 12 transitions, 46 flow [2021-03-12 00:22:51,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=16, PETRI_TRANSITIONS=12} [2021-03-12 00:22:51,418 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2021-03-12 00:22:51,418 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 12 transitions, 46 flow [2021-03-12 00:22:51,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2021-03-12 00:22:51,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:51,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:51,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:22:51,418 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash -119043340, now seen corresponding path program 1 times [2021-03-12 00:22:51,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:51,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564769204] [2021-03-12 00:22:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:51,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 00:22:51,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564769204] [2021-03-12 00:22:51,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35213021] [2021-03-12 00:22:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:51,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-12 00:22:51,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:51,501 INFO L142 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-03-12 00:22:51,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,523 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-03-12 00:22:51,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:51,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 00:22:51,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:51,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-03-12 00:22:51,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423458982] [2021-03-12 00:22:51,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 00:22:51,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:51,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 00:22:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-12 00:22:51,545 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 63 [2021-03-12 00:22:51,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-03-12 00:22:51,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:51,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 63 [2021-03-12 00:22:51,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:51,559 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2021-03-12 00:22:51,559 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-12 00:22:51,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 13 events. 2/13 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 20. Up to 5 conditions per place. [2021-03-12 00:22:51,559 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 2 selfloop transitions, 3 changer transitions 0/13 dead transitions. [2021-03-12 00:22:51,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 60 flow [2021-03-12 00:22:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 00:22:51,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-12 00:22:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2021-03-12 00:22:51,562 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2021-03-12 00:22:51,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2021-03-12 00:22:51,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2021-03-12 00:22:51,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:51,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2021-03-12 00:22:51,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:22:51,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2021-03-12 00:22:51,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2021-03-12 00:22:51,573 INFO L185 Difference]: Start difference. First operand has 16 places, 12 transitions, 46 flow. Second operand 4 states and 170 transitions. [2021-03-12 00:22:51,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 60 flow [2021-03-12 00:22:51,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:22:51,573 INFO L241 Difference]: Finished difference. Result has 19 places, 13 transitions, 60 flow [2021-03-12 00:22:51,574 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2021-03-12 00:22:51,574 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 4 predicate places. [2021-03-12 00:22:51,574 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 60 flow [2021-03-12 00:22:51,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-03-12 00:22:51,574 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:51,574 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:51,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-03-12 00:22:51,786 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash -923727507, now seen corresponding path program 2 times [2021-03-12 00:22:51,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:51,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507866591] [2021-03-12 00:22:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:51,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 00:22:51,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507866591] [2021-03-12 00:22:51,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928339912] [2021-03-12 00:22:51,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:51,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 00:22:51,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:51,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-12 00:22:51,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:51,859 INFO L142 QuantifierPusher]: treesize reduction 16, result has 20.0 percent of original size [2021-03-12 00:22:51,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:51,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:51,875 INFO L142 QuantifierPusher]: treesize reduction 14, result has 50.0 percent of original size [2021-03-12 00:22:51,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:51,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:51,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-03-12 00:22:51,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:51,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-03-12 00:22:51,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278113058] [2021-03-12 00:22:51,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-12 00:22:51,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:51,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-12 00:22:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-12 00:22:51,889 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 63 [2021-03-12 00:22:51,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-03-12 00:22:51,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:51,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 63 [2021-03-12 00:22:51,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:51,896 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-12 00:22:51,896 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-12 00:22:51,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 14 events. 2/14 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 25. Up to 5 conditions per place. [2021-03-12 00:22:51,896 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 2 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2021-03-12 00:22:51,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 74 flow [2021-03-12 00:22:51,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-12 00:22:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-12 00:22:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2021-03-12 00:22:51,897 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2021-03-12 00:22:51,897 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2021-03-12 00:22:51,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2021-03-12 00:22:51,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:51,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2021-03-12 00:22:51,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2021-03-12 00:22:51,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2021-03-12 00:22:51,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2021-03-12 00:22:51,899 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 60 flow. Second operand 4 states and 166 transitions. [2021-03-12 00:22:51,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 74 flow [2021-03-12 00:22:51,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 66 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-12 00:22:51,900 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 68 flow [2021-03-12 00:22:51,900 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2021-03-12 00:22:51,900 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 6 predicate places. [2021-03-12 00:22:51,900 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 68 flow [2021-03-12 00:22:51,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2021-03-12 00:22:51,900 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:51,900 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:52,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:52,118 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:52,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1345155724, now seen corresponding path program 3 times [2021-03-12 00:22:52,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:52,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533290379] [2021-03-12 00:22:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:52,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-12 00:22:52,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:52,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533290379] [2021-03-12 00:22:52,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342067340] [2021-03-12 00:22:52,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:52,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-12 00:22:52,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-12 00:22:52,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:52,236 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:52,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,278 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:22:52,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,282 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-03-12 00:22:52,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,311 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-03-12 00:22:52,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,325 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:22:52,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:52,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:52,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-03-12 00:22:52,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413606176] [2021-03-12 00:22:52,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:22:52,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:22:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:22:52,346 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:52,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 68 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 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) [2021-03-12 00:22:52,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:52,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:52,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:52,390 INFO L129 PetriNetUnfolder]: 19/48 cut-off events. [2021-03-12 00:22:52,391 INFO L130 PetriNetUnfolder]: For 64/76 co-relation queries the response was YES. [2021-03-12 00:22:52,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 48 events. 19/48 cut-off events. For 64/76 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 2 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 149. Up to 24 conditions per place. [2021-03-12 00:22:52,393 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 7 selfloop transitions, 14 changer transitions 0/26 dead transitions. [2021-03-12 00:22:52,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 180 flow [2021-03-12 00:22:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:22:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:22:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2021-03-12 00:22:52,394 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.328042328042328 [2021-03-12 00:22:52,394 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2021-03-12 00:22:52,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2021-03-12 00:22:52,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:52,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2021-03-12 00:22:52,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2021-03-12 00:22:52,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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) [2021-03-12 00:22:52,397 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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) [2021-03-12 00:22:52,397 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 68 flow. Second operand 6 states and 124 transitions. [2021-03-12 00:22:52,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 180 flow [2021-03-12 00:22:52,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 166 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-12 00:22:52,399 INFO L241 Difference]: Finished difference. Result has 27 places, 25 transitions, 174 flow [2021-03-12 00:22:52,400 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2021-03-12 00:22:52,400 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 12 predicate places. [2021-03-12 00:22:52,400 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 174 flow [2021-03-12 00:22:52,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 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) [2021-03-12 00:22:52,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:52,401 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:52,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:52,607 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1761364390, now seen corresponding path program 4 times [2021-03-12 00:22:52,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:52,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968319315] [2021-03-12 00:22:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:52,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:52,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-12 00:22:52,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:52,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968319315] [2021-03-12 00:22:52,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809306500] [2021-03-12 00:22:52,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:52,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 00:22:52,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:52,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-12 00:22:52,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:52,672 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:52,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:52,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,679 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:22:52,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,685 INFO L142 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size [2021-03-12 00:22:52,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:52,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:52,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:52,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:52,696 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-12 00:22:52,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:52,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:52,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:22:52,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:52,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:52,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:52,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:52,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-12 00:22:52,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875453750] [2021-03-12 00:22:52,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:22:52,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:22:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:22:52,725 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:52,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 174 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-03-12 00:22:52,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:52,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:52,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:52,762 INFO L129 PetriNetUnfolder]: 37/97 cut-off events. [2021-03-12 00:22:52,763 INFO L130 PetriNetUnfolder]: For 218/248 co-relation queries the response was YES. [2021-03-12 00:22:52,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 97 events. 37/97 cut-off events. For 218/248 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 345 event pairs, 2 based on Foata normal form. 7/104 useless extension candidates. Maximal degree in co-relation 375. Up to 39 conditions per place. [2021-03-12 00:22:52,764 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 16 selfloop transitions, 27 changer transitions 0/48 dead transitions. [2021-03-12 00:22:52,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 48 transitions, 430 flow [2021-03-12 00:22:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:22:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:22:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2021-03-12 00:22:52,765 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.3378684807256236 [2021-03-12 00:22:52,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 149 transitions. [2021-03-12 00:22:52,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 149 transitions. [2021-03-12 00:22:52,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:52,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 149 transitions. [2021-03-12 00:22:52,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 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) [2021-03-12 00:22:52,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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) [2021-03-12 00:22:52,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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) [2021-03-12 00:22:52,766 INFO L185 Difference]: Start difference. First operand has 27 places, 25 transitions, 174 flow. Second operand 7 states and 149 transitions. [2021-03-12 00:22:52,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 48 transitions, 430 flow [2021-03-12 00:22:52,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 423 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-12 00:22:52,769 INFO L241 Difference]: Finished difference. Result has 36 places, 44 transitions, 423 flow [2021-03-12 00:22:52,769 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=36, PETRI_TRANSITIONS=44} [2021-03-12 00:22:52,769 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 21 predicate places. [2021-03-12 00:22:52,769 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 44 transitions, 423 flow [2021-03-12 00:22:52,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-03-12 00:22:52,769 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:52,770 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:52,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:52,983 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1866334038, now seen corresponding path program 5 times [2021-03-12 00:22:52,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:52,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741910932] [2021-03-12 00:22:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:53,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,025 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-12 00:22:53,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:53,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741910932] [2021-03-12 00:22:53,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300265492] [2021-03-12 00:22:53,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:53,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-12 00:22:53,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:53,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-12 00:22:53,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:53,083 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:53,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,099 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-12 00:22:53,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,111 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-03-12 00:22:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,123 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-12 00:22:53,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:22:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:53,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:53,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:53,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-03-12 00:22:53,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943391337] [2021-03-12 00:22:53,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:22:53,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:53,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:22:53,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:22:53,158 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:53,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 44 transitions, 423 flow. Second operand has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 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) [2021-03-12 00:22:53,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:53,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:53,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:53,196 INFO L129 PetriNetUnfolder]: 44/120 cut-off events. [2021-03-12 00:22:53,196 INFO L130 PetriNetUnfolder]: For 456/490 co-relation queries the response was YES. [2021-03-12 00:22:53,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 120 events. 44/120 cut-off events. For 456/490 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 481 event pairs, 2 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 574. Up to 70 conditions per place. [2021-03-12 00:22:53,198 INFO L132 encePairwiseOnDemand]: 58/63 looper letters, 34 selfloop transitions, 20 changer transitions 0/59 dead transitions. [2021-03-12 00:22:53,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 674 flow [2021-03-12 00:22:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:22:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:22:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2021-03-12 00:22:53,204 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2021-03-12 00:22:53,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 105 transitions. [2021-03-12 00:22:53,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 105 transitions. [2021-03-12 00:22:53,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:53,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 105 transitions. [2021-03-12 00:22:53,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2021-03-12 00:22:53,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:53,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:53,205 INFO L185 Difference]: Start difference. First operand has 36 places, 44 transitions, 423 flow. Second operand 5 states and 105 transitions. [2021-03-12 00:22:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 674 flow [2021-03-12 00:22:53,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 654 flow, removed 10 selfloop flow, removed 0 redundant places. [2021-03-12 00:22:53,209 INFO L241 Difference]: Finished difference. Result has 43 places, 58 transitions, 631 flow [2021-03-12 00:22:53,209 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=631, PETRI_PLACES=43, PETRI_TRANSITIONS=58} [2021-03-12 00:22:53,209 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 28 predicate places. [2021-03-12 00:22:53,209 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 58 transitions, 631 flow [2021-03-12 00:22:53,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 19.1) internal successors, (191), 10 states have internal predecessors, (191), 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) [2021-03-12 00:22:53,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:53,209 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:53,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-03-12 00:22:53,423 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:53,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:53,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1126468648, now seen corresponding path program 6 times [2021-03-12 00:22:53,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:53,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464653040] [2021-03-12 00:22:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:53,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-12 00:22:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:53,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464653040] [2021-03-12 00:22:53,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420069719] [2021-03-12 00:22:53,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:53,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-12 00:22:53,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:53,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-12 00:22:53,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:53,509 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:53,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:53,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,518 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-12 00:22:53,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:53,539 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-03-12 00:22:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:53,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 51.4 percent of original size [2021-03-12 00:22:53,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:53,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,560 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-03-12 00:22:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:53,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:53,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:53,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:53,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-12 00:22:53,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490535241] [2021-03-12 00:22:53,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:22:53,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:53,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:22:53,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:22:53,577 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:53,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 58 transitions, 631 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-03-12 00:22:53,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:53,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:53,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:53,625 INFO L129 PetriNetUnfolder]: 51/145 cut-off events. [2021-03-12 00:22:53,625 INFO L130 PetriNetUnfolder]: For 673/711 co-relation queries the response was YES. [2021-03-12 00:22:53,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 145 events. 51/145 cut-off events. For 673/711 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 644 event pairs, 2 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 756. Up to 65 conditions per place. [2021-03-12 00:22:53,627 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 36 selfloop transitions, 29 changer transitions 0/70 dead transitions. [2021-03-12 00:22:53,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 910 flow [2021-03-12 00:22:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:22:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:22:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2021-03-12 00:22:53,628 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.3310657596371882 [2021-03-12 00:22:53,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 146 transitions. [2021-03-12 00:22:53,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 146 transitions. [2021-03-12 00:22:53,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:53,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 146 transitions. [2021-03-12 00:22:53,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 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) [2021-03-12 00:22:53,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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) [2021-03-12 00:22:53,629 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 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) [2021-03-12 00:22:53,629 INFO L185 Difference]: Start difference. First operand has 43 places, 58 transitions, 631 flow. Second operand 7 states and 146 transitions. [2021-03-12 00:22:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 910 flow [2021-03-12 00:22:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 888 flow, removed 11 selfloop flow, removed 0 redundant places. [2021-03-12 00:22:53,633 INFO L241 Difference]: Finished difference. Result has 51 places, 66 transitions, 790 flow [2021-03-12 00:22:53,634 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=790, PETRI_PLACES=51, PETRI_TRANSITIONS=66} [2021-03-12 00:22:53,634 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 36 predicate places. [2021-03-12 00:22:53,634 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 66 transitions, 790 flow [2021-03-12 00:22:53,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-03-12 00:22:53,635 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:53,635 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:53,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:53,839 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:53,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:53,839 INFO L82 PathProgramCache]: Analyzing trace with hash -235767291, now seen corresponding path program 7 times [2021-03-12 00:22:53,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:53,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588994672] [2021-03-12 00:22:53,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:53,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-12 00:22:53,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588994672] [2021-03-12 00:22:53,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337731735] [2021-03-12 00:22:53,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-12 00:22:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 00:22:53,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:53,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,902 INFO L142 QuantifierPusher]: treesize reduction 13, result has 45.8 percent of original size [2021-03-12 00:22:53,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:53,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:53,906 INFO L142 QuantifierPusher]: treesize reduction 14, result has 44.0 percent of original size [2021-03-12 00:22:53,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,913 INFO L142 QuantifierPusher]: treesize reduction 15, result has 48.3 percent of original size [2021-03-12 00:22:53,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:53,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-03-12 00:22:53,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:53,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-03-12 00:22:53,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747942246] [2021-03-12 00:22:53,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:22:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:22:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:22:53,923 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 63 [2021-03-12 00:22:53,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 66 transitions, 790 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2021-03-12 00:22:53,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:53,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 63 [2021-03-12 00:22:53,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:53,948 INFO L129 PetriNetUnfolder]: 42/122 cut-off events. [2021-03-12 00:22:53,948 INFO L130 PetriNetUnfolder]: For 645/684 co-relation queries the response was YES. [2021-03-12 00:22:53,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 122 events. 42/122 cut-off events. For 645/684 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 521 event pairs, 1 based on Foata normal form. 8/130 useless extension candidates. Maximal degree in co-relation 681. Up to 47 conditions per place. [2021-03-12 00:22:53,949 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 1 selfloop transitions, 31 changer transitions 0/67 dead transitions. [2021-03-12 00:22:53,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 868 flow [2021-03-12 00:22:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:22:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:22:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2021-03-12 00:22:53,950 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6698412698412698 [2021-03-12 00:22:53,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 211 transitions. [2021-03-12 00:22:53,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 211 transitions. [2021-03-12 00:22:53,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:53,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 211 transitions. [2021-03-12 00:22:53,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2021-03-12 00:22:53,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:53,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:53,952 INFO L185 Difference]: Start difference. First operand has 51 places, 66 transitions, 790 flow. Second operand 5 states and 211 transitions. [2021-03-12 00:22:53,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 868 flow [2021-03-12 00:22:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 805 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-12 00:22:53,958 INFO L241 Difference]: Finished difference. Result has 53 places, 67 transitions, 835 flow [2021-03-12 00:22:53,958 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=835, PETRI_PLACES=53, PETRI_TRANSITIONS=67} [2021-03-12 00:22:53,958 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 38 predicate places. [2021-03-12 00:22:53,958 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 67 transitions, 835 flow [2021-03-12 00:22:53,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2021-03-12 00:22:53,958 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:53,958 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:54,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:54,171 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1726480457, now seen corresponding path program 8 times [2021-03-12 00:22:54,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:54,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803439434] [2021-03-12 00:22:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:54,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:22:54,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 00:22:54,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803439434] [2021-03-12 00:22:54,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771358650] [2021-03-12 00:22:54,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-12 00:22:54,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 00:22:54,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:54,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 00:22:54,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:54,211 INFO L142 QuantifierPusher]: treesize reduction 8, result has 27.3 percent of original size [2021-03-12 00:22:54,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:22:54,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,219 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-12 00:22:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:54,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 37.9 percent of original size [2021-03-12 00:22:54,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,233 INFO L142 QuantifierPusher]: treesize reduction 13, result has 51.9 percent of original size [2021-03-12 00:22:54,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-12 00:22:54,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:22:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 00:22:54,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:54,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-03-12 00:22:54,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221173057] [2021-03-12 00:22:54,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:22:54,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:22:54,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:22:54,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 63 [2021-03-12 00:22:54,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 67 transitions, 835 flow. Second operand has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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) [2021-03-12 00:22:54,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:54,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 63 [2021-03-12 00:22:54,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:54,263 INFO L129 PetriNetUnfolder]: 45/131 cut-off events. [2021-03-12 00:22:54,263 INFO L130 PetriNetUnfolder]: For 807/848 co-relation queries the response was YES. [2021-03-12 00:22:54,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 131 events. 45/131 cut-off events. For 807/848 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 567 event pairs, 1 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 752. Up to 52 conditions per place. [2021-03-12 00:22:54,265 INFO L132 encePairwiseOnDemand]: 60/63 looper letters, 1 selfloop transitions, 31 changer transitions 0/68 dead transitions. [2021-03-12 00:22:54,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 913 flow [2021-03-12 00:22:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:22:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:22:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2021-03-12 00:22:54,266 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.653968253968254 [2021-03-12 00:22:54,266 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 206 transitions. [2021-03-12 00:22:54,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 206 transitions. [2021-03-12 00:22:54,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:54,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 206 transitions. [2021-03-12 00:22:54,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.2) internal successors, (206), 5 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) [2021-03-12 00:22:54,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:54,268 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:54,268 INFO L185 Difference]: Start difference. First operand has 53 places, 67 transitions, 835 flow. Second operand 5 states and 206 transitions. [2021-03-12 00:22:54,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 913 flow [2021-03-12 00:22:54,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 874 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-12 00:22:54,273 INFO L241 Difference]: Finished difference. Result has 56 places, 68 transitions, 904 flow [2021-03-12 00:22:54,274 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=904, PETRI_PLACES=56, PETRI_TRANSITIONS=68} [2021-03-12 00:22:54,274 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 41 predicate places. [2021-03-12 00:22:54,274 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 68 transitions, 904 flow [2021-03-12 00:22:54,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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) [2021-03-12 00:22:54,274 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:54,274 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:54,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-12 00:22:54,487 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:54,488 INFO L82 PathProgramCache]: Analyzing trace with hash -561863372, now seen corresponding path program 9 times [2021-03-12 00:22:54,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:54,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644341674] [2021-03-12 00:22:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:54,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:54,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-12 00:22:54,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644341674] [2021-03-12 00:22:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891573052] [2021-03-12 00:22:54,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:54,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-12 00:22:54,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:54,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-12 00:22:54,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:54,561 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:54,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,569 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:22:54,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,572 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-03-12 00:22:54,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,577 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-12 00:22:54,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-12 00:22:54,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:54,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:54,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:54,590 INFO L142 QuantifierPusher]: treesize reduction 13, result has 56.7 percent of original size [2021-03-12 00:22:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,595 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-03-12 00:22:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:54,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:54,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:54,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:54,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:54,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:54,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-03-12 00:22:54,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803151251] [2021-03-12 00:22:54,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:22:54,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:54,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:22:54,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:22:54,609 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:54,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 904 flow. Second operand has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 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) [2021-03-12 00:22:54,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:54,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:54,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:54,645 INFO L129 PetriNetUnfolder]: 66/171 cut-off events. [2021-03-12 00:22:54,645 INFO L130 PetriNetUnfolder]: For 1389/1440 co-relation queries the response was YES. [2021-03-12 00:22:54,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 171 events. 66/171 cut-off events. For 1389/1440 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 777 event pairs, 6 based on Foata normal form. 7/178 useless extension candidates. Maximal degree in co-relation 1129. Up to 89 conditions per place. [2021-03-12 00:22:54,647 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 36 selfloop transitions, 37 changer transitions 2/80 dead transitions. [2021-03-12 00:22:54,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 1243 flow [2021-03-12 00:22:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:22:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:22:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2021-03-12 00:22:54,648 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.33015873015873015 [2021-03-12 00:22:54,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2021-03-12 00:22:54,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2021-03-12 00:22:54,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:54,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2021-03-12 00:22:54,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:22:54,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:54,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2021-03-12 00:22:54,649 INFO L185 Difference]: Start difference. First operand has 56 places, 68 transitions, 904 flow. Second operand 5 states and 104 transitions. [2021-03-12 00:22:54,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 1243 flow [2021-03-12 00:22:54,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 1161 flow, removed 34 selfloop flow, removed 3 redundant places. [2021-03-12 00:22:54,657 INFO L241 Difference]: Finished difference. Result has 60 places, 78 transitions, 1151 flow [2021-03-12 00:22:54,657 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1151, PETRI_PLACES=60, PETRI_TRANSITIONS=78} [2021-03-12 00:22:54,658 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 45 predicate places. [2021-03-12 00:22:54,658 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 78 transitions, 1151 flow [2021-03-12 00:22:54,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 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) [2021-03-12 00:22:54,658 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:22:54,658 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-12 00:22:54,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:54,874 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 00:22:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:22:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash 720326006, now seen corresponding path program 10 times [2021-03-12 00:22:54,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:22:54,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677857293] [2021-03-12 00:22:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:22:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:22:54,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,932 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-12 00:22:54,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677857293] [2021-03-12 00:22:54,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239332378] [2021-03-12 00:22:54,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:54,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 00:22:54,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 00:22:54,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-12 00:22:54,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 00:22:54,969 INFO L142 QuantifierPusher]: treesize reduction 8, result has 42.9 percent of original size [2021-03-12 00:22:54,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:22:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,975 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-12 00:22:54,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:54,979 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-03-12 00:22:54,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:54,984 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-12 00:22:54,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:54,995 INFO L142 QuantifierPusher]: treesize reduction 13, result has 60.6 percent of original size [2021-03-12 00:22:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:54,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:54,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:54,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:55,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:22:55,011 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-12 00:22:55,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-12 00:22:55,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:55,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:55,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-12 00:22:55,023 INFO L142 QuantifierPusher]: treesize reduction 18, result has 48.6 percent of original size [2021-03-12 00:22:55,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-12 00:22:55,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:55,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:55,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:22:55,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:22:55,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-12 00:22:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:22:55,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 00:22:55,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-03-12 00:22:55,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041954156] [2021-03-12 00:22:55,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-12 00:22:55,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:22:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-12 00:22:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-03-12 00:22:55,040 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2021-03-12 00:22:55,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 78 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2021-03-12 00:22:55,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:22:55,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2021-03-12 00:22:55,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:22:55,080 INFO L129 PetriNetUnfolder]: 66/166 cut-off events. [2021-03-12 00:22:55,080 INFO L130 PetriNetUnfolder]: For 1330/1387 co-relation queries the response was YES. [2021-03-12 00:22:55,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 166 events. 66/166 cut-off events. For 1330/1387 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 750 event pairs, 2 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 1102. Up to 67 conditions per place. [2021-03-12 00:22:55,081 INFO L132 encePairwiseOnDemand]: 59/63 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2021-03-12 00:22:55,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 1389 flow [2021-03-12 00:22:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:22:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:22:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2021-03-12 00:22:55,082 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.31746031746031744 [2021-03-12 00:22:55,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 120 transitions. [2021-03-12 00:22:55,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 120 transitions. [2021-03-12 00:22:55,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:22:55,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 120 transitions. [2021-03-12 00:22:55,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-03-12 00:22:55,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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) [2021-03-12 00:22:55,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 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) [2021-03-12 00:22:55,083 INFO L185 Difference]: Start difference. First operand has 60 places, 78 transitions, 1151 flow. Second operand 6 states and 120 transitions. [2021-03-12 00:22:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 1389 flow [2021-03-12 00:22:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 1360 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-12 00:22:55,088 INFO L241 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2021-03-12 00:22:55,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2021-03-12 00:22:55,088 INFO L335 CegarLoopForPetriNet]: 15 programPoint places, 47 predicate places. [2021-03-12 00:22:55,088 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2021-03-12 00:22:55,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 19.181818181818183) internal successors, (211), 11 states have internal predecessors, (211), 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) [2021-03-12 00:22:55,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 00:22:55,307 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:22:55 BasicIcfg [2021-03-12 00:22:55,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:22:55,308 INFO L168 Benchmark]: Toolchain (without parser) took 5419.67 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 236.5 MB in the beginning and 291.8 MB in the end (delta: -55.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.47 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 INFO L168 Benchmark]: Boogie Preprocessor took 9.97 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.6 MB in the end (delta: 813.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 INFO L168 Benchmark]: RCFGBuilder took 229.23 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 238.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 INFO L168 Benchmark]: TraceAbstraction took 5155.53 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 237.7 MB in the beginning and 291.8 MB in the end (delta: -54.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2021-03-12 00:22:55,308 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.47 ms. Allocated memory is still 255.9 MB. Free memory was 236.0 MB in the beginning and 234.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.97 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.6 MB in the end (delta: 813.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 229.23 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 238.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5155.53 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 237.7 MB in the beginning and 291.8 MB in the end (delta: -54.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 883.9ms, 30 PlacesBefore, 15 PlacesAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 4 FixpointIterations, 1 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 6 ChoiceCompositions, 28 TotalNumberOfCompositions, 274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 274, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 200, positive: 200, positive conditional: 0, positive unconditional: 200, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 200, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 274, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 200, unknown conditional: 0, unknown unconditional: 200] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 72]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5085.8ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 495.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 927.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 15 SDslu, 47 SDs, 0 SdLazy, 316 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 355.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1151occurred in iteration=11, InterpolantAutomatonStates: 60, 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: 36.3ms SsaConstructionTime, 124.2ms SatisfiabilityAnalysisTime, 1039.4ms InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 1433 SizeOfPredicates, 18 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 23/149 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...