/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 05:29:14,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 05:29:14,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 05:29:14,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 05:29:14,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 05:29:14,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 05:29:14,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 05:29:14,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 05:29:14,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 05:29:14,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 05:29:14,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 05:29:14,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 05:29:14,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 05:29:14,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 05:29:14,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 05:29:14,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 05:29:14,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 05:29:14,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 05:29:14,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 05:29:14,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 05:29:14,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 05:29:14,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 05:29:14,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 05:29:14,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 05:29:14,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 05:29:14,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 05:29:14,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 05:29:14,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 05:29:14,856 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 05:29:14,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 05:29:14,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 05:29:14,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 05:29:14,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 05:29:14,911 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 05:29:14,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 05:29:14,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 05:29:14,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 05:29:14,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 05:29:14,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 05:29:14,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 05:29:14,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 05:29:14,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 05:29:14,914 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 05:29:14,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 05:29:14,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 05:29:14,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 05:29:14,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 05:29:14,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 05:29:14,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 05:29:14,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 05:29:14,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 05:29:14,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 05:29:14,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 05:29:14,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 05:29:14,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 05:29:14,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 05:29:14,917 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 05:29:14,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 05:29:14,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 05:29:14,918 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 05:29:15,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 05:29:15,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 05:29:15,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 05:29:15,386 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 05:29:15,387 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 05:29:15,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-04-29 05:29:15,392 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-04-29 05:29:15,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 05:29:15,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 05:29:15,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 05:29:15,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 05:29:15,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 05:29:15,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 05:29:15,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 05:29:15,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 05:29:15,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 05:29:15,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/1) ... [2021-04-29 05:29:15,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 05:29:15,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 05:29:15,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 05:29:15,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 05:29:15,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (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 [2021-04-29 05:29:15,713 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 05:29:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 05:29:15,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 05:29:15,729 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 05:29:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 05:29:15,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 05:29:15,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 05:29:15,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 05:29:15,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 05:29:15,735 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 05:29:15,945 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 05:29:15,945 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 05:29:15,947 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:29:15 BoogieIcfgContainer [2021-04-29 05:29:15,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 05:29:15,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 05:29:15,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 05:29:15,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 05:29:15,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 05:29:15" (1/2) ... [2021-04-29 05:29:15,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5345229a and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 05:29:15, skipping insertion in model container [2021-04-29 05:29:15,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 05:29:15" (2/2) ... [2021-04-29 05:29:15,965 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-04-29 05:29:15,978 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 05:29:15,989 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 05:29:15,995 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 05:29:16,080 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-29 05:29:16,111 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 05:29:16,138 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 05:29:16,138 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 05:29:16,138 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 05:29:16,138 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 05:29:16,138 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 05:29:16,138 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 05:29:16,139 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 05:29:16,139 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 05:29:16,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-04-29 05:29:16,183 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-04-29 05:29:16,183 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:29:16,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:29:16,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-04-29 05:29:16,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-04-29 05:29:16,192 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:16,209 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 66 flow [2021-04-29 05:29:16,213 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 66 flow [2021-04-29 05:29:16,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 66 flow [2021-04-29 05:29:16,228 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-04-29 05:29:16,228 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:29:16,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 05:29:16,231 INFO L146 LiptonReduction]: Number of co-enabled transitions 240 [2021-04-29 05:29:16,640 INFO L158 LiptonReduction]: Checked pairs total: 726 [2021-04-29 05:29:16,640 INFO L160 LiptonReduction]: Total number of compositions: 7 [2021-04-29 05:29:16,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 452 [2021-04-29 05:29:16,661 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-04-29 05:29:16,662 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 05:29:16,662 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:16,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:16,663 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:16,669 INFO L82 PathProgramCache]: Analyzing trace with hash 183877987, now seen corresponding path program 1 times [2021-04-29 05:29:16,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:16,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356111656] [2021-04-29 05:29:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:16,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:16,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:16,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:16,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:16,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:16,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:16,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:16,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:16,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-29 05:29:16,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:16,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356111656] [2021-04-29 05:29:16,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:16,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 05:29:16,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354878385] [2021-04-29 05:29:16,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 05:29:16,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:16,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 05:29:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 05:29:16,951 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 38 [2021-04-29 05:29:16,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2021-04-29 05:29:16,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:16,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 38 [2021-04-29 05:29:16,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:17,081 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-04-29 05:29:17,081 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-04-29 05:29:17,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 59 events. 1/59 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-04-29 05:29:17,084 INFO L132 encePairwiseOnDemand]: 31/38 looper letters, 7 selfloop transitions, 7 changer transitions 11/39 dead transitions. [2021-04-29 05:29:17,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 128 flow [2021-04-29 05:29:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 05:29:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 05:29:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2021-04-29 05:29:17,100 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8585526315789473 [2021-04-29 05:29:17,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 261 transitions. [2021-04-29 05:29:17,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 261 transitions. [2021-04-29 05:29:17,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:17,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 261 transitions. [2021-04-29 05:29:17,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 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) [2021-04-29 05:29:17,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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) [2021-04-29 05:29:17,117 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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) [2021-04-29 05:29:17,119 INFO L185 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 8 states and 261 transitions. [2021-04-29 05:29:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 128 flow [2021-04-29 05:29:17,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 120 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-29 05:29:17,127 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 82 flow [2021-04-29 05:29:17,130 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-04-29 05:29:17,131 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2021-04-29 05:29:17,131 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:17,131 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 82 flow [2021-04-29 05:29:17,132 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 82 flow [2021-04-29 05:29:17,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 25 transitions, 82 flow [2021-04-29 05:29:17,141 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-04-29 05:29:17,142 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-04-29 05:29:17,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 37 events. 0/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:29:17,143 INFO L146 LiptonReduction]: Number of co-enabled transitions 122 [2021-04-29 05:29:17,157 INFO L158 LiptonReduction]: Checked pairs total: 143 [2021-04-29 05:29:17,157 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:29:17,158 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-04-29 05:29:17,160 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 82 flow [2021-04-29 05:29:17,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2021-04-29 05:29:17,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:17,161 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:17,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 05:29:17,161 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1513946305, now seen corresponding path program 2 times [2021-04-29 05:29:17,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:17,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346475063] [2021-04-29 05:29:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:17,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-29 05:29:17,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:17,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346475063] [2021-04-29 05:29:17,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:17,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 05:29:17,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693367543] [2021-04-29 05:29:17,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 05:29:17,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 05:29:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 05:29:17,287 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 38 [2021-04-29 05:29:17,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2021-04-29 05:29:17,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:17,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 38 [2021-04-29 05:29:17,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:17,421 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-04-29 05:29:17,421 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-04-29 05:29:17,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 38 events. 1/38 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 68. Up to 5 conditions per place. [2021-04-29 05:29:17,422 INFO L132 encePairwiseOnDemand]: 32/38 looper letters, 4 selfloop transitions, 6 changer transitions 4/28 dead transitions. [2021-04-29 05:29:17,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 124 flow [2021-04-29 05:29:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 05:29:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 05:29:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2021-04-29 05:29:17,430 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8355263157894737 [2021-04-29 05:29:17,430 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 254 transitions. [2021-04-29 05:29:17,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 254 transitions. [2021-04-29 05:29:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:17,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 254 transitions. [2021-04-29 05:29:17,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.75) internal successors, (254), 8 states have internal predecessors, (254), 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) [2021-04-29 05:29:17,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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) [2021-04-29 05:29:17,438 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 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) [2021-04-29 05:29:17,438 INFO L185 Difference]: Start difference. First operand has 31 places, 25 transitions, 82 flow. Second operand 8 states and 254 transitions. [2021-04-29 05:29:17,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 124 flow [2021-04-29 05:29:17,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 120 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-04-29 05:29:17,442 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 81 flow [2021-04-29 05:29:17,443 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=81, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2021-04-29 05:29:17,444 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2021-04-29 05:29:17,444 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:17,445 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 22 transitions, 81 flow [2021-04-29 05:29:17,447 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 22 transitions, 81 flow [2021-04-29 05:29:17,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 22 transitions, 81 flow [2021-04-29 05:29:17,457 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-04-29 05:29:17,458 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2021-04-29 05:29:17,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 27 events. 0/27 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 05:29:17,459 INFO L146 LiptonReduction]: Number of co-enabled transitions 70 [2021-04-29 05:29:17,628 INFO L158 LiptonReduction]: Checked pairs total: 162 [2021-04-29 05:29:17,628 INFO L160 LiptonReduction]: Total number of compositions: 5 [2021-04-29 05:29:17,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 185 [2021-04-29 05:29:17,630 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 99 flow [2021-04-29 05:29:17,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 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) [2021-04-29 05:29:17,631 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:17,631 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:17,631 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 05:29:17,632 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:17,632 INFO L82 PathProgramCache]: Analyzing trace with hash 891366179, now seen corresponding path program 3 times [2021-04-29 05:29:17,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:17,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600043300] [2021-04-29 05:29:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:17,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 05:29:17,703 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-04-29 05:29:17,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:17,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 05:29:17,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:17,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:17,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600043300] [2021-04-29 05:29:17,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:17,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 05:29:17,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851484066] [2021-04-29 05:29:17,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 05:29:17,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:17,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 05:29:17,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-29 05:29:17,742 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 43 [2021-04-29 05:29:17,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2021-04-29 05:29:17,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:17,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 43 [2021-04-29 05:29:17,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:17,863 INFO L129 PetriNetUnfolder]: 23/104 cut-off events. [2021-04-29 05:29:17,863 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-04-29 05:29:17,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 104 events. 23/104 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 457 event pairs, 7 based on Foata normal form. 6/110 useless extension candidates. Maximal degree in co-relation 253. Up to 34 conditions per place. [2021-04-29 05:29:17,867 INFO L132 encePairwiseOnDemand]: 35/43 looper letters, 14 selfloop transitions, 6 changer transitions 15/43 dead transitions. [2021-04-29 05:29:17,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 234 flow [2021-04-29 05:29:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 05:29:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 05:29:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2021-04-29 05:29:17,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2021-04-29 05:29:17,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 166 transitions. [2021-04-29 05:29:17,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 166 transitions. [2021-04-29 05:29:17,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:17,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 166 transitions. [2021-04-29 05:29:17,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 05:29:17,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2021-04-29 05:29:17,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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) [2021-04-29 05:29:17,873 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 99 flow. Second operand 6 states and 166 transitions. [2021-04-29 05:29:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 234 flow [2021-04-29 05:29:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 185 flow, removed 6 selfloop flow, removed 10 redundant places. [2021-04-29 05:29:17,879 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 93 flow [2021-04-29 05:29:17,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-04-29 05:29:17,879 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2021-04-29 05:29:17,880 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:17,880 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 93 flow [2021-04-29 05:29:17,881 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 93 flow [2021-04-29 05:29:17,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 23 transitions, 93 flow [2021-04-29 05:29:17,891 INFO L129 PetriNetUnfolder]: 2/35 cut-off events. [2021-04-29 05:29:17,892 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-04-29 05:29:17,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 35 events. 2/35 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 61 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 22. Up to 9 conditions per place. [2021-04-29 05:29:17,893 INFO L146 LiptonReduction]: Number of co-enabled transitions 34 [2021-04-29 05:29:17,998 INFO L158 LiptonReduction]: Checked pairs total: 72 [2021-04-29 05:29:17,999 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 05:29:17,999 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 119 [2021-04-29 05:29:18,000 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 97 flow [2021-04-29 05:29:18,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2021-04-29 05:29:18,001 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:18,001 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:18,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 05:29:18,001 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash -855450177, now seen corresponding path program 1 times [2021-04-29 05:29:18,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:18,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391608281] [2021-04-29 05:29:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:18,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:18,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391608281] [2021-04-29 05:29:18,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:18,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:29:18,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676293493] [2021-04-29 05:29:18,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 05:29:18,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 05:29:18,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 05:29:18,026 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 46 [2021-04-29 05:29:18,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2021-04-29 05:29:18,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:18,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 46 [2021-04-29 05:29:18,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:18,038 INFO L129 PetriNetUnfolder]: 2/35 cut-off events. [2021-04-29 05:29:18,039 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-04-29 05:29:18,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 35 events. 2/35 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 26. Up to 10 conditions per place. [2021-04-29 05:29:18,039 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 2 selfloop transitions, 3 changer transitions 2/23 dead transitions. [2021-04-29 05:29:18,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 109 flow [2021-04-29 05:29:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 05:29:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 05:29:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-04-29 05:29:18,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2021-04-29 05:29:18,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-04-29 05:29:18,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-04-29 05:29:18,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:18,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-04-29 05:29:18,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-04-29 05:29:18,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-04-29 05:29:18,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-04-29 05:29:18,043 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 97 flow. Second operand 3 states and 121 transitions. [2021-04-29 05:29:18,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 109 flow [2021-04-29 05:29:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 103 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:29:18,045 INFO L241 Difference]: Finished difference. Result has 30 places, 21 transitions, 96 flow [2021-04-29 05:29:18,046 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2021-04-29 05:29:18,046 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2021-04-29 05:29:18,046 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:18,046 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 21 transitions, 96 flow [2021-04-29 05:29:18,047 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 21 transitions, 96 flow [2021-04-29 05:29:18,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 21 transitions, 96 flow [2021-04-29 05:29:18,051 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-04-29 05:29:18,051 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-04-29 05:29:18,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 30 events. 2/30 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 21. Up to 9 conditions per place. [2021-04-29 05:29:18,051 INFO L146 LiptonReduction]: Number of co-enabled transitions 24 [2021-04-29 05:29:18,063 INFO L158 LiptonReduction]: Checked pairs total: 22 [2021-04-29 05:29:18,063 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:29:18,063 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-04-29 05:29:18,065 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 96 flow [2021-04-29 05:29:18,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2021-04-29 05:29:18,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:18,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:18,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 05:29:18,066 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:18,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:18,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2128199926, now seen corresponding path program 1 times [2021-04-29 05:29:18,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:18,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124151014] [2021-04-29 05:29:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:18,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 05:29:18,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 05:29:18,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 05:29:18,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-29 05:29:18,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-04-29 05:29:18,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 05:29:18,137 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-04-29 05:29:18,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:18,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124151014] [2021-04-29 05:29:18,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:18,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:29:18,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86756773] [2021-04-29 05:29:18,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:29:18,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:18,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:29:18,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:29:18,141 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 46 [2021-04-29 05:29:18,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-04-29 05:29:18,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:18,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 46 [2021-04-29 05:29:18,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:18,179 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-04-29 05:29:18,180 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-04-29 05:29:18,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 37 events. 5/37 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 3 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 64. Up to 17 conditions per place. [2021-04-29 05:29:18,180 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 10 selfloop transitions, 2 changer transitions 4/22 dead transitions. [2021-04-29 05:29:18,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 127 flow [2021-04-29 05:29:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:29:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:29:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2021-04-29 05:29:18,182 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5521739130434783 [2021-04-29 05:29:18,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2021-04-29 05:29:18,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2021-04-29 05:29:18,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:18,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2021-04-29 05:29:18,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 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) [2021-04-29 05:29:18,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2021-04-29 05:29:18,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2021-04-29 05:29:18,185 INFO L185 Difference]: Start difference. First operand has 28 places, 21 transitions, 96 flow. Second operand 5 states and 127 transitions. [2021-04-29 05:29:18,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 127 flow [2021-04-29 05:29:18,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 119 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 05:29:18,187 INFO L241 Difference]: Finished difference. Result has 31 places, 17 transitions, 68 flow [2021-04-29 05:29:18,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2021-04-29 05:29:18,187 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2021-04-29 05:29:18,187 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:18,188 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 17 transitions, 68 flow [2021-04-29 05:29:18,188 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 17 transitions, 68 flow [2021-04-29 05:29:18,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 17 transitions, 68 flow [2021-04-29 05:29:18,191 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-04-29 05:29:18,191 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 05:29:18,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 20 events. 0/20 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:29:18,192 INFO L146 LiptonReduction]: Number of co-enabled transitions 20 [2021-04-29 05:29:18,203 INFO L158 LiptonReduction]: Checked pairs total: 11 [2021-04-29 05:29:18,204 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:29:18,204 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-04-29 05:29:18,205 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 68 flow [2021-04-29 05:29:18,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2021-04-29 05:29:18,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:18,205 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:18,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 05:29:18,206 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:18,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1012387369, now seen corresponding path program 1 times [2021-04-29 05:29:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:18,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819192386] [2021-04-29 05:29:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:18,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:18,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819192386] [2021-04-29 05:29:18,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:18,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 05:29:18,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949216964] [2021-04-29 05:29:18,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 05:29:18,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:18,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 05:29:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 05:29:18,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 46 [2021-04-29 05:29:18,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-04-29 05:29:18,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:18,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 46 [2021-04-29 05:29:18,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:18,258 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-04-29 05:29:18,258 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-04-29 05:29:18,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 24 events. 1/24 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 1 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2021-04-29 05:29:18,259 INFO L132 encePairwiseOnDemand]: 43/46 looper letters, 2 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-04-29 05:29:18,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 76 flow [2021-04-29 05:29:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 05:29:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 05:29:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-04-29 05:29:18,261 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8840579710144928 [2021-04-29 05:29:18,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-04-29 05:29:18,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-04-29 05:29:18,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:18,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-04-29 05:29:18,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-04-29 05:29:18,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-04-29 05:29:18,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2021-04-29 05:29:18,269 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 68 flow. Second operand 3 states and 122 transitions. [2021-04-29 05:29:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 76 flow [2021-04-29 05:29:18,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 17 transitions, 60 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-04-29 05:29:18,271 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 60 flow [2021-04-29 05:29:18,271 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-04-29 05:29:18,271 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -9 predicate places. [2021-04-29 05:29:18,271 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:18,272 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 17 transitions, 60 flow [2021-04-29 05:29:18,272 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 17 transitions, 60 flow [2021-04-29 05:29:18,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 17 transitions, 60 flow [2021-04-29 05:29:18,275 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-04-29 05:29:18,275 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-04-29 05:29:18,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 24 events. 1/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 4. Up to 5 conditions per place. [2021-04-29 05:29:18,276 INFO L146 LiptonReduction]: Number of co-enabled transitions 16 [2021-04-29 05:29:18,451 INFO L158 LiptonReduction]: Checked pairs total: 46 [2021-04-29 05:29:18,451 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 05:29:18,451 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 180 [2021-04-29 05:29:18,452 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 67 flow [2021-04-29 05:29:18,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-04-29 05:29:18,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:18,453 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:18,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 05:29:18,453 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:18,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2015826559, now seen corresponding path program 2 times [2021-04-29 05:29:18,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075871350] [2021-04-29 05:29:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:18,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:18,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:18,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 05:29:18,494 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-04-29 05:29:18,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 05:29:18,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 05:29:18,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:18,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075871350] [2021-04-29 05:29:18,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:18,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 05:29:18,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31111417] [2021-04-29 05:29:18,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 05:29:18,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 05:29:18,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-29 05:29:18,514 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2021-04-29 05:29:18,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 67 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2021-04-29 05:29:18,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:18,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2021-04-29 05:29:18,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:18,566 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-04-29 05:29:18,567 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-04-29 05:29:18,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 38 events. 5/38 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 4 based on Foata normal form. 5/39 useless extension candidates. Maximal degree in co-relation 41. Up to 14 conditions per place. [2021-04-29 05:29:18,567 INFO L132 encePairwiseOnDemand]: 40/49 looper letters, 5 selfloop transitions, 5 changer transitions 6/22 dead transitions. [2021-04-29 05:29:18,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 112 flow [2021-04-29 05:29:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 05:29:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 05:29:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-04-29 05:29:18,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2021-04-29 05:29:18,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-04-29 05:29:18,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-04-29 05:29:18,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:18,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-04-29 05:29:18,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2021-04-29 05:29:18,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 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) [2021-04-29 05:29:18,572 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 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) [2021-04-29 05:29:18,572 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 67 flow. Second operand 6 states and 150 transitions. [2021-04-29 05:29:18,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 112 flow [2021-04-29 05:29:18,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 05:29:18,573 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 73 flow [2021-04-29 05:29:18,574 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-04-29 05:29:18,574 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2021-04-29 05:29:18,574 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:18,574 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 73 flow [2021-04-29 05:29:18,575 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 73 flow [2021-04-29 05:29:18,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 16 transitions, 73 flow [2021-04-29 05:29:18,577 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-29 05:29:18,577 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2021-04-29 05:29:18,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 22 events. 0/22 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:29:18,578 INFO L146 LiptonReduction]: Number of co-enabled transitions 8 [2021-04-29 05:29:18,579 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:29:18,580 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:29:18,580 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-04-29 05:29:18,581 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 73 flow [2021-04-29 05:29:18,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2021-04-29 05:29:18,581 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 05:29:18,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 05:29:18,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 05:29:18,582 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 05:29:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 05:29:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1749912579, now seen corresponding path program 1 times [2021-04-29 05:29:18,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 05:29:18,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092964081] [2021-04-29 05:29:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 05:29:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 05:29:18,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 05:29:18,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-29 05:29:18,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-29 05:29:18,628 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-04-29 05:29:18,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-29 05:29:18,639 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-29 05:29:18,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 05:29:18,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 05:29:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 05:29:18,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092964081] [2021-04-29 05:29:18,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 05:29:18,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 05:29:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695963705] [2021-04-29 05:29:18,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 05:29:18,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 05:29:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 05:29:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 05:29:18,643 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2021-04-29 05:29:18,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-04-29 05:29:18,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 05:29:18,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2021-04-29 05:29:18,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 05:29:18,660 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-04-29 05:29:18,660 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-04-29 05:29:18,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 11 events. 0/11 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 05:29:18,661 INFO L132 encePairwiseOnDemand]: 45/49 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-04-29 05:29:18,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 9 transitions, 55 flow [2021-04-29 05:29:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 05:29:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 05:29:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2021-04-29 05:29:18,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2021-04-29 05:29:18,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2021-04-29 05:29:18,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2021-04-29 05:29:18,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 05:29:18,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2021-04-29 05:29:18,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-04-29 05:29:18,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 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) [2021-04-29 05:29:18,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 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) [2021-04-29 05:29:18,665 INFO L185 Difference]: Start difference. First operand has 28 places, 16 transitions, 73 flow. Second operand 5 states and 117 transitions. [2021-04-29 05:29:18,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 9 transitions, 55 flow [2021-04-29 05:29:18,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 9 transitions, 43 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-04-29 05:29:18,666 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-04-29 05:29:18,666 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-04-29 05:29:18,666 INFO L343 CegarLoopForPetriNet]: 34 programPoint places, -14 predicate places. [2021-04-29 05:29:18,666 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 05:29:18,666 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 0 transitions, 0 flow [2021-04-29 05:29:18,667 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 0 transitions, 0 flow [2021-04-29 05:29:18,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 05:29:18,667 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 05:29:18,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 05:29:18,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 05:29:18,667 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 05:29:18,667 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 05:29:18,668 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 05:29:18,668 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 05:29:18,669 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 05:29:18,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2021-04-29 05:29:18,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 05:29:18,673 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 05:29:18 BasicIcfg [2021-04-29 05:29:18,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 05:29:18,674 INFO L168 Benchmark]: Toolchain (without parser) took 3236.17 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 271.0 MB in the beginning and 285.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:29:18,675 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.77 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 83.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:29:18,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 302.0 MB. Free memory was 285.5 MB in the beginning and 284.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 05:29:18,676 INFO L168 Benchmark]: Boogie Preprocessor took 29.69 ms. Allocated memory is still 302.0 MB. Free memory was 284.0 MB in the beginning and 283.1 MB in the end (delta: 921.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:29:18,676 INFO L168 Benchmark]: RCFGBuilder took 376.65 ms. Allocated memory is still 302.0 MB. Free memory was 283.0 MB in the beginning and 278.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-04-29 05:29:18,677 INFO L168 Benchmark]: TraceAbstraction took 2723.94 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.8 MB in the beginning and 285.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.0 GB. [2021-04-29 05:29:18,679 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 0.77 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 83.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.56 ms. Allocated memory is still 302.0 MB. Free memory was 285.5 MB in the beginning and 284.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.69 ms. Allocated memory is still 302.0 MB. Free memory was 284.0 MB in the beginning and 283.1 MB in the end (delta: 921.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 376.65 ms. Allocated memory is still 302.0 MB. Free memory was 283.0 MB in the beginning and 278.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2723.94 ms. Allocated memory was 302.0 MB in the beginning and 362.8 MB in the end (delta: 60.8 MB). Free memory was 277.8 MB in the beginning and 285.2 MB in the end (delta: -7.4 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 426.9ms, 34 PlacesBefore, 34 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 325, positive: 265, positive conditional: 265, positive unconditional: 0, negative: 60, negative conditional: 60, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 206, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 206, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 206, positive: 163, positive conditional: 0, positive unconditional: 163, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 211, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 155, negative conditional: 0, negative unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 325, positive: 91, positive conditional: 91, positive unconditional: 0, negative: 28, negative conditional: 28, negative unconditional: 0, unknown: 206, unknown conditional: 206, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 174, Positive conditional cache size: 174, Positive unconditional cache size: 0, Negative cache size: 32, Negative conditional cache size: 32, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.6ms, 40 PlacesBefore, 31 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 14, positive conditional: 1, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, positive: 14, positive conditional: 1, positive unconditional: 13, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 56, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 223, Positive cache size: 188, Positive conditional cache size: 188, Positive unconditional cache size: 0, Negative cache size: 35, Negative conditional cache size: 35, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 181.8ms, 38 PlacesBefore, 37 PlacesAfterwards, 22 TransitionsBefore, 24 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 162 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 83, positive: 57, positive conditional: 57, positive unconditional: 0, negative: 26, negative conditional: 26, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 21, positive unconditional: 1, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 21, positive unconditional: 1, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 83, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 26, unknown conditional: 26, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 249, Positive cache size: 210, Positive conditional cache size: 210, Positive unconditional cache size: 0, Negative cache size: 39, Negative conditional cache size: 39, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 117.1ms, 35 PlacesBefore, 29 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 1, positive unconditional: 5, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 1, positive unconditional: 5, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 16, negative conditional: 11, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 42, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 258, Positive cache size: 216, Positive conditional cache size: 216, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.6ms, 30 PlacesBefore, 28 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 263, Positive cache size: 219, Positive conditional cache size: 219, Positive unconditional cache size: 0, Negative cache size: 44, Negative conditional cache size: 44, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.8ms, 31 PlacesBefore, 28 PlacesAfterwards, 17 TransitionsBefore, 17 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 11 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 5, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 266, Positive cache size: 220, Positive conditional cache size: 220, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 178.9ms, 25 PlacesBefore, 27 PlacesAfterwards, 17 TransitionsBefore, 19 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 46 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 25, negative conditional: 20, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 224, Positive conditional cache size: 224, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 33 PlacesBefore, 28 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 224, Positive conditional cache size: 224, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 20 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 273, Positive cache size: 224, Positive conditional cache size: 224, Positive unconditional cache size: 0, Negative cache size: 49, Negative conditional cache size: 49, Negative unconditional cache size: 0 - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2537.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 673.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 512.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 46 SDslu, 13 SDs, 0 SdLazy, 267 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 277.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=2, InterpolantAutomatonStates: 44, 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: 14.1ms SsaConstructionTime, 90.5ms SatisfiabilityAnalysisTime, 499.1ms InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...