/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:38:53,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:38:53,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:38:53,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 09:38:53,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:38:53,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:38:53,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:38:53,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 09:38:53,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:38:53,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:38:53,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:38:53,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:38:53,883 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:38:53,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:38:53,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:38:53,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:38:53,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:38:53,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:38:53,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:38:53,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:38:53,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:38:53,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:38:53,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:38:54,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:38:54,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:38:54,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:38:54,207 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:38:54,208 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:38:54,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl [2021-06-13 09:38:54,210 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-2-unrolled.wvr.bpl' [2021-06-13 09:38:54,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:38:54,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:38:54,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:38:54,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:38:54,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:38:54,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,267 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:38:54,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:38:54,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:38:54,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:38:54,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... [2021-06-13 09:38:54,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:38:54,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:38:54,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:38:54,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:38:54,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:38:54,369 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:38:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:38:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:38:54,369 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:38:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:38:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:38:54,370 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:38:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:38:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:38:54,371 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:38:54,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:38:54,511 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:38:54,512 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:38:54 BoogieIcfgContainer [2021-06-13 09:38:54,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:38:54,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:38:54,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:38:54,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:38:54,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:38:54" (1/2) ... [2021-06-13 09:38:54,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d776bac and model type misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:38:54, skipping insertion in model container [2021-06-13 09:38:54,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:38:54" (2/2) ... [2021-06-13 09:38:54,519 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-2-unrolled.wvr.bpl [2021-06-13 09:38:54,523 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:38:54,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:38:54,524 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:38:54,569 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-13 09:38:54,588 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 09:38:54,606 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:38:54,606 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:38:54,606 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:38:54,607 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:38:54,607 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:38:54,607 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:38:54,607 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:38:54,607 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:38:54,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 66 flow [2021-06-13 09:38:54,636 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-06-13 09:38:54,636 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:38:54,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-06-13 09:38:54,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 66 flow [2021-06-13 09:38:54,642 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2021-06-13 09:38:54,650 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-06-13 09:38:54,650 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 09:38:54,650 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:54,651 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:54,651 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1978128435, now seen corresponding path program 1 times [2021-06-13 09:38:54,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:54,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727571378] [2021-06-13 09:38:54,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:54,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:54,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:54,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:54,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:54,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:54,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:54,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727571378] [2021-06-13 09:38:54,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727571378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:54,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:54,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 09:38:54,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526655145] [2021-06-13 09:38:54,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 09:38:54,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:54,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 09:38:54,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 09:38:54,876 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-06-13 09:38:54,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:54,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:54,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-06-13 09:38:54,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:54,958 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2021-06-13 09:38:54,958 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 09:38:54,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 55 events. 12/55 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 2 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 66. Up to 20 conditions per place. [2021-06-13 09:38:54,962 INFO L132 encePairwiseOnDemand]: 21/25 looper letters, 5 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-06-13 09:38:54,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 74 flow [2021-06-13 09:38:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 09:38:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 09:38:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2021-06-13 09:38:54,974 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.84 [2021-06-13 09:38:54,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 63 transitions. [2021-06-13 09:38:54,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 63 transitions. [2021-06-13 09:38:54,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:54,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 63 transitions. [2021-06-13 09:38:54,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:54,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:54,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:54,986 INFO L185 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 63 transitions. [2021-06-13 09:38:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 74 flow [2021-06-13 09:38:54,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 09:38:54,995 INFO L241 Difference]: Finished difference. Result has 25 places, 23 transitions, 65 flow [2021-06-13 09:38:54,997 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2021-06-13 09:38:54,998 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2021-06-13 09:38:54,998 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 65 flow [2021-06-13 09:38:54,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:54,999 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:54,999 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:55,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:38:55,000 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:55,002 INFO L82 PathProgramCache]: Analyzing trace with hash 216629998, now seen corresponding path program 1 times [2021-06-13 09:38:55,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:55,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899084023] [2021-06-13 09:38:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:55,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:38:55,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:55,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:55,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899084023] [2021-06-13 09:38:55,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899084023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:55,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:55,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:38:55,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295387419] [2021-06-13 09:38:55,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:38:55,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:38:55,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:38:55,085 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-06-13 09:38:55,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:55,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-06-13 09:38:55,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:55,205 INFO L129 PetriNetUnfolder]: 39/126 cut-off events. [2021-06-13 09:38:55,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 09:38:55,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 126 events. 39/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 525 event pairs, 4 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 201. Up to 35 conditions per place. [2021-06-13 09:38:55,208 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 19 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2021-06-13 09:38:55,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 151 flow [2021-06-13 09:38:55,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:38:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:38:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-06-13 09:38:55,211 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.816 [2021-06-13 09:38:55,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:55,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,218 INFO L185 Difference]: Start difference. First operand has 25 places, 23 transitions, 65 flow. Second operand 5 states and 102 transitions. [2021-06-13 09:38:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 151 flow [2021-06-13 09:38:55,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 09:38:55,223 INFO L241 Difference]: Finished difference. Result has 31 places, 29 transitions, 111 flow [2021-06-13 09:38:55,223 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2021-06-13 09:38:55,224 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-06-13 09:38:55,224 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 111 flow [2021-06-13 09:38:55,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,227 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:55,227 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:55,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:38:55,228 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:55,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1669776406, now seen corresponding path program 2 times [2021-06-13 09:38:55,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:55,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796920654] [2021-06-13 09:38:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:55,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:55,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:55,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796920654] [2021-06-13 09:38:55,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796920654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 09:38:55,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355389487] [2021-06-13 09:38:55,286 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 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 [2021-06-13 09:38:55,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 09:38:55,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 09:38:55,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-13 09:38:55,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 09:38:55,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:38:55,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-13 09:38:55,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 09:38:55,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:38:55,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 09:38:55,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 09:38:55,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:38:55,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:38:55,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,441 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-06-13 09:38:55,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:55,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355389487] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 09:38:55,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 09:38:55,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-13 09:38:55,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016206998] [2021-06-13 09:38:55,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:38:55,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:55,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:38:55,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:38:55,475 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-06-13 09:38:55,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:55,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-06-13 09:38:55,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:55,559 INFO L129 PetriNetUnfolder]: 34/110 cut-off events. [2021-06-13 09:38:55,560 INFO L130 PetriNetUnfolder]: For 71/73 co-relation queries the response was YES. [2021-06-13 09:38:55,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 110 events. 34/110 cut-off events. For 71/73 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 417 event pairs, 4 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 245. Up to 34 conditions per place. [2021-06-13 09:38:55,563 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 15 selfloop transitions, 11 changer transitions 3/43 dead transitions. [2021-06-13 09:38:55,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 224 flow [2021-06-13 09:38:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:38:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:38:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-06-13 09:38:55,568 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.792 [2021-06-13 09:38:55,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2021-06-13 09:38:55,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2021-06-13 09:38:55,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:55,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2021-06-13 09:38:55,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,571 INFO L185 Difference]: Start difference. First operand has 31 places, 29 transitions, 111 flow. Second operand 5 states and 99 transitions. [2021-06-13 09:38:55,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 224 flow [2021-06-13 09:38:55,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 09:38:55,577 INFO L241 Difference]: Finished difference. Result has 38 places, 33 transitions, 174 flow [2021-06-13 09:38:55,577 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2021-06-13 09:38:55,577 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2021-06-13 09:38:55,577 INFO L482 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 174 flow [2021-06-13 09:38:55,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:55,577 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:55,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-13 09:38:55,789 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:55,790 INFO L82 PathProgramCache]: Analyzing trace with hash 2109381633, now seen corresponding path program 1 times [2021-06-13 09:38:55,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:55,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192455168] [2021-06-13 09:38:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:55,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 09:38:55,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:55,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:55,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192455168] [2021-06-13 09:38:55,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192455168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:55,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:55,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:38:55,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350238192] [2021-06-13 09:38:55,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:38:55,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:38:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:38:55,816 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-06-13 09:38:55,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:55,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-06-13 09:38:55,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:55,925 INFO L129 PetriNetUnfolder]: 48/154 cut-off events. [2021-06-13 09:38:55,925 INFO L130 PetriNetUnfolder]: For 232/236 co-relation queries the response was YES. [2021-06-13 09:38:55,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 154 events. 48/154 cut-off events. For 232/236 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 641 event pairs, 2 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 419. Up to 49 conditions per place. [2021-06-13 09:38:55,926 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 32 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2021-06-13 09:38:55,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 382 flow [2021-06-13 09:38:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:38:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:38:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2021-06-13 09:38:55,928 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.816 [2021-06-13 09:38:55,928 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:55,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 102 transitions. [2021-06-13 09:38:55,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,931 INFO L185 Difference]: Start difference. First operand has 38 places, 33 transitions, 174 flow. Second operand 5 states and 102 transitions. [2021-06-13 09:38:55,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 382 flow [2021-06-13 09:38:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 376 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-06-13 09:38:55,938 INFO L241 Difference]: Finished difference. Result has 45 places, 41 transitions, 265 flow [2021-06-13 09:38:55,938 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2021-06-13 09:38:55,938 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2021-06-13 09:38:55,939 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 265 flow [2021-06-13 09:38:55,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,939 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:55,939 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:55,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:38:55,939 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:55,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2094240753, now seen corresponding path program 2 times [2021-06-13 09:38:55,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:55,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160680317] [2021-06-13 09:38:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:55,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:55,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:55,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:55,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:38:55,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:55,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160680317] [2021-06-13 09:38:55,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160680317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:55,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:55,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 09:38:55,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409225138] [2021-06-13 09:38:55,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 09:38:55,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 09:38:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 09:38:55,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 25 [2021-06-13 09:38:55,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:55,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:55,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 25 [2021-06-13 09:38:55,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:56,030 INFO L129 PetriNetUnfolder]: 44/138 cut-off events. [2021-06-13 09:38:56,031 INFO L130 PetriNetUnfolder]: For 340/344 co-relation queries the response was YES. [2021-06-13 09:38:56,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 138 events. 44/138 cut-off events. For 340/344 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 528 event pairs, 4 based on Foata normal form. 6/142 useless extension candidates. Maximal degree in co-relation 431. Up to 45 conditions per place. [2021-06-13 09:38:56,033 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 26 selfloop transitions, 11 changer transitions 2/53 dead transitions. [2021-06-13 09:38:56,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 408 flow [2021-06-13 09:38:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:38:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:38:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2021-06-13 09:38:56,036 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.792 [2021-06-13 09:38:56,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2021-06-13 09:38:56,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2021-06-13 09:38:56,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:56,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2021-06-13 09:38:56,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,038 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,038 INFO L185 Difference]: Start difference. First operand has 45 places, 41 transitions, 265 flow. Second operand 5 states and 99 transitions. [2021-06-13 09:38:56,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 408 flow [2021-06-13 09:38:56,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 398 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-06-13 09:38:56,042 INFO L241 Difference]: Finished difference. Result has 52 places, 41 transitions, 293 flow [2021-06-13 09:38:56,043 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2021-06-13 09:38:56,043 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2021-06-13 09:38:56,043 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 293 flow [2021-06-13 09:38:56,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:56,043 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:56,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:38:56,044 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:56,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:56,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1483774124, now seen corresponding path program 1 times [2021-06-13 09:38:56,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:56,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334355634] [2021-06-13 09:38:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,093 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 09:38:56,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 09:38:56,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-13 09:38:56,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:56,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334355634] [2021-06-13 09:38:56,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334355634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:38:56,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:38:56,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 09:38:56,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132207454] [2021-06-13 09:38:56,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:38:56,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:56,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:38:56,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:38:56,101 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-06-13 09:38:56,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:56,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-06-13 09:38:56,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:56,137 INFO L129 PetriNetUnfolder]: 33/148 cut-off events. [2021-06-13 09:38:56,137 INFO L130 PetriNetUnfolder]: For 403/412 co-relation queries the response was YES. [2021-06-13 09:38:56,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 148 events. 33/148 cut-off events. For 403/412 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 690 event pairs, 4 based on Foata normal form. 4/149 useless extension candidates. Maximal degree in co-relation 438. Up to 34 conditions per place. [2021-06-13 09:38:56,139 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 5 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2021-06-13 09:38:56,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 339 flow [2021-06-13 09:38:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:38:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:38:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2021-06-13 09:38:56,140 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.824 [2021-06-13 09:38:56,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 103 transitions. [2021-06-13 09:38:56,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 103 transitions. [2021-06-13 09:38:56,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:56,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 103 transitions. [2021-06-13 09:38:56,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,141 INFO L185 Difference]: Start difference. First operand has 52 places, 41 transitions, 293 flow. Second operand 5 states and 103 transitions. [2021-06-13 09:38:56,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 339 flow [2021-06-13 09:38:56,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 326 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-06-13 09:38:56,145 INFO L241 Difference]: Finished difference. Result has 57 places, 47 transitions, 335 flow [2021-06-13 09:38:56,146 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2021-06-13 09:38:56,146 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2021-06-13 09:38:56,146 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 335 flow [2021-06-13 09:38:56,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:38:56,146 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:38:56,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:38:56,146 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:38:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:38:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash -68998580, now seen corresponding path program 2 times [2021-06-13 09:38:56,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:38:56,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256429486] [2021-06-13 09:38:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:38:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:38:56,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 09:38:56,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 09:38:56,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:38:56,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:38:56,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256429486] [2021-06-13 09:38:56,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256429486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 09:38:56,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504015709] [2021-06-13 09:38:56,205 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 [2021-06-13 09:38:56,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-13 09:38:56,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-13 09:38:56,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-13 09:38:56,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-13 09:38:56,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:56,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:56,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:56,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 09:38:56,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 09:38:56,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 09:38:56,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-13 09:38:56,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 09:38:56,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-06-13 09:38:56,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:56,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:38:56,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:38:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-13 09:38:56,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504015709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-13 09:38:56,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-13 09:38:56,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-13 09:38:56,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283610975] [2021-06-13 09:38:56,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 09:38:56,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:38:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 09:38:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 09:38:56,373 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 25 [2021-06-13 09:38:56,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:38:56,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 25 [2021-06-13 09:38:56,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:38:56,412 INFO L129 PetriNetUnfolder]: 33/149 cut-off events. [2021-06-13 09:38:56,412 INFO L130 PetriNetUnfolder]: For 457/473 co-relation queries the response was YES. [2021-06-13 09:38:56,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 149 events. 33/149 cut-off events. For 457/473 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 1 based on Foata normal form. 8/157 useless extension candidates. Maximal degree in co-relation 491. Up to 29 conditions per place. [2021-06-13 09:38:56,413 INFO L132 encePairwiseOnDemand]: 19/25 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2021-06-13 09:38:56,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 383 flow [2021-06-13 09:38:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 09:38:56,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 09:38:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2021-06-13 09:38:56,415 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-06-13 09:38:56,415 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 118 transitions. [2021-06-13 09:38:56,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 118 transitions. [2021-06-13 09:38:56,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:38:56,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 118 transitions. [2021-06-13 09:38:56,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,427 INFO L185 Difference]: Start difference. First operand has 57 places, 47 transitions, 335 flow. Second operand 6 states and 118 transitions. [2021-06-13 09:38:56,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 383 flow [2021-06-13 09:38:56,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 381 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-13 09:38:56,431 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2021-06-13 09:38:56,431 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2021-06-13 09:38:56,432 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2021-06-13 09:38:56,432 INFO L482 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2021-06-13 09:38:56,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:38:56,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-13 09:38:56,658 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 09:38:56,660 INFO L202 PluginConnector]: Adding new model misc-2-unrolled.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 09:38:56 BasicIcfg [2021-06-13 09:38:56,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 09:38:56,661 INFO L168 Benchmark]: Toolchain (without parser) took 2416.11 ms. Allocated memory was 183.5 MB in the beginning and 257.9 MB in the end (delta: 74.4 MB). Free memory was 163.4 MB in the beginning and 239.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2021-06-13 09:38:56,661 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.89 ms. Allocated memory is still 183.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:38:56,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.36 ms. Allocated memory is still 183.5 MB. Free memory was 163.4 MB in the beginning and 162.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:38:56,662 INFO L168 Benchmark]: Boogie Preprocessor took 13.98 ms. Allocated memory is still 183.5 MB. Free memory was 162.0 MB in the beginning and 161.0 MB in the end (delta: 961.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:38:56,662 INFO L168 Benchmark]: RCFGBuilder took 224.46 ms. Allocated memory is still 183.5 MB. Free memory was 160.9 MB in the beginning and 150.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-06-13 09:38:56,662 INFO L168 Benchmark]: TraceAbstraction took 2146.66 ms. Allocated memory was 183.5 MB in the beginning and 257.9 MB in the end (delta: 74.4 MB). Free memory was 150.1 MB in the beginning and 239.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2021-06-13 09:38:56,663 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 0.89 ms. Allocated memory is still 183.5 MB. Free memory is still 164.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.36 ms. Allocated memory is still 183.5 MB. Free memory was 163.4 MB in the beginning and 162.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.98 ms. Allocated memory is still 183.5 MB. Free memory was 162.0 MB in the beginning and 161.0 MB in the end (delta: 961.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 224.46 ms. Allocated memory is still 183.5 MB. Free memory was 160.9 MB in the beginning and 150.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2146.66 ms. Allocated memory was 183.5 MB in the beginning and 257.9 MB in the end (delta: 74.4 MB). Free memory was 150.1 MB in the beginning and 239.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2054.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 669.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 34 SDslu, 6 SDs, 0 SdLazy, 186 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=6, InterpolantAutomatonStates: 34, 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: 24.8ms SsaConstructionTime, 90.7ms SatisfiabilityAnalysisTime, 562.1ms InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 633 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 7/11 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...