/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/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 08:11:14,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 08:11:14,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 08:11:14,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 08:11:14,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 08:11:14,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 08:11:14,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 08:11:14,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 08:11:14,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 08:11:14,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 08:11:14,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 08:11:14,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 08:11:14,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 08:11:14,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 08:11:14,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 08:11:14,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 08:11:14,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 08:11:14,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 08:11:14,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 08:11:14,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 08:11:14,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 08:11:14,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 08:11:14,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 08:11:14,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 08:11:14,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 08:11:14,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 08:11:14,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 08:11:14,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 08:11:14,804 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 08:11:14,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 08:11:14,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 08:11:14,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 08:11:14,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 08:11:14,861 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 08:11:14,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 08:11:14,861 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 08:11:14,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 08:11:14,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 08:11:14,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 08:11:14,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 08:11:14,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 08:11:14,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 08:11:14,864 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 08:11:14,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 08:11:14,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 08:11:14,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 08:11:14,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 08:11:14,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 08:11:14,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 08:11:14,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 08:11:14,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 08:11:14,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 08:11:14,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 08:11:14,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 08:11:14,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 08:11:14,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 08:11:14,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 08:11:14,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 08:11:14,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 08:11:14,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 08:11:15,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 08:11:15,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 08:11:15,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 08:11:15,272 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 08:11:15,274 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 08:11:15,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2021-04-29 08:11:15,276 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2021-04-29 08:11:15,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 08:11:15,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 08:11:15,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 08:11:15,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 08:11:15,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 08:11:15,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 08:11:15,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 08:11:15,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 08:11:15,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 08:11:15,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/1) ... [2021-04-29 08:11:15,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 08:11:15,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 08:11:15,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 08:11:15,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 08:11:15,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (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 08:11:15,544 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-04-29 08:11:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-04-29 08:11:15,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-04-29 08:11:15,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-04-29 08:11:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-04-29 08:11:15,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-04-29 08:11:15,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 08:11:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 08:11:15,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 08:11:15,547 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 08:11:15,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 08:11:15,756 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 08:11:15,757 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 08:11:15 BoogieIcfgContainer [2021-04-29 08:11:15,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 08:11:15,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 08:11:15,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 08:11:15,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 08:11:15,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 08:11:15" (1/2) ... [2021-04-29 08:11:15,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5914b5 and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 08:11:15, skipping insertion in model container [2021-04-29 08:11:15,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 08:11:15" (2/2) ... [2021-04-29 08:11:15,766 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2021-04-29 08:11:15,773 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 08:11:15,778 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 08:11:15,779 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 08:11:15,818 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-04-29 08:11:15,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-04-29 08:11:15,874 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 08:11:15,874 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 08:11:15,875 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 08:11:15,875 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 08:11:15,875 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 08:11:15,875 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 08:11:15,876 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 08:11:15,876 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 08:11:15,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 86 flow [2021-04-29 08:11:15,981 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2021-04-29 08:11:15,981 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:15,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 0/33 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. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:15,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 86 flow [2021-04-29 08:11:15,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 74 flow [2021-04-29 08:11:16,000 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:16,015 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 31 transitions, 74 flow [2021-04-29 08:11:16,019 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 31 transitions, 74 flow [2021-04-29 08:11:16,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 74 flow [2021-04-29 08:11:16,039 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-04-29 08:11:16,039 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:16,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 0/31 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. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-04-29 08:11:16,043 INFO L146 LiptonReduction]: Number of co-enabled transitions 240 [2021-04-29 08:11:16,636 INFO L158 LiptonReduction]: Checked pairs total: 1430 [2021-04-29 08:11:16,636 INFO L160 LiptonReduction]: Total number of compositions: 12 [2021-04-29 08:11:16,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 646 [2021-04-29 08:11:16,690 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-04-29 08:11:16,691 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:16,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:16,692 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 08:11:16,692 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash -801228583, now seen corresponding path program 1 times [2021-04-29 08:11:16,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:16,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385502480] [2021-04-29 08:11:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:16,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:16,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:16,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:16,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:16,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:16,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-29 08:11:16,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,006 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 08:11:17,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385502480] [2021-04-29 08:11:17,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:17,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 08:11:17,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788568211] [2021-04-29 08:11:17,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 08:11:17,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 08:11:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 08:11:17,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 47 [2021-04-29 08:11:17,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 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 08:11:17,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:17,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 47 [2021-04-29 08:11:17,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:17,200 INFO L129 PetriNetUnfolder]: 1/63 cut-off events. [2021-04-29 08:11:17,200 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-04-29 08:11:17,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 63 events. 1/63 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 199 event pairs, 0 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2021-04-29 08:11:17,203 INFO L132 encePairwiseOnDemand]: 36/47 looper letters, 7 selfloop transitions, 7 changer transitions 15/43 dead transitions. [2021-04-29 08:11:17,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 144 flow [2021-04-29 08:11:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 08:11:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 08:11:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 305 transitions. [2021-04-29 08:11:17,220 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8111702127659575 [2021-04-29 08:11:17,221 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 305 transitions. [2021-04-29 08:11:17,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 305 transitions. [2021-04-29 08:11:17,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:17,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 305 transitions. [2021-04-29 08:11:17,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 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 08:11:17,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 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 08:11:17,240 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 47.0) internal successors, (423), 9 states have internal predecessors, (423), 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 08:11:17,242 INFO L185 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 8 states and 305 transitions. [2021-04-29 08:11:17,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 144 flow [2021-04-29 08:11:17,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-04-29 08:11:17,249 INFO L241 Difference]: Finished difference. Result has 44 places, 25 transitions, 82 flow [2021-04-29 08:11:17,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2021-04-29 08:11:17,253 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2021-04-29 08:11:17,253 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:17,253 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 25 transitions, 82 flow [2021-04-29 08:11:17,254 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 25 transitions, 82 flow [2021-04-29 08:11:17,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 25 transitions, 82 flow [2021-04-29 08:11:17,263 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-04-29 08:11:17,264 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 08:11:17,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 38 events. 0/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 08:11:17,265 INFO L146 LiptonReduction]: Number of co-enabled transitions 118 [2021-04-29 08:11:17,294 INFO L158 LiptonReduction]: Checked pairs total: 143 [2021-04-29 08:11:17,294 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:17,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 41 [2021-04-29 08:11:17,296 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 82 flow [2021-04-29 08:11:17,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 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 08:11:17,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:17,297 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 08:11:17,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 08:11:17,298 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 818747111, now seen corresponding path program 2 times [2021-04-29 08:11:17,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:17,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146359181] [2021-04-29 08:11:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:17,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:17,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:17,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:17,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:17,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:17,374 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 08:11:17,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146359181] [2021-04-29 08:11:17,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:17,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-29 08:11:17,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581079748] [2021-04-29 08:11:17,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 08:11:17,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:17,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 08:11:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-29 08:11:17,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 47 [2021-04-29 08:11:17,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 82 flow. Second operand has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 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 08:11:17,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:17,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 47 [2021-04-29 08:11:17,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:17,526 INFO L129 PetriNetUnfolder]: 34/175 cut-off events. [2021-04-29 08:11:17,526 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-29 08:11:17,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 175 events. 34/175 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 902 event pairs, 4 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 320. Up to 26 conditions per place. [2021-04-29 08:11:17,529 INFO L132 encePairwiseOnDemand]: 38/47 looper letters, 17 selfloop transitions, 17 changer transitions 2/52 dead transitions. [2021-04-29 08:11:17,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 52 transitions, 208 flow [2021-04-29 08:11:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 08:11:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 08:11:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 280 transitions. [2021-04-29 08:11:17,538 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6619385342789598 [2021-04-29 08:11:17,538 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 280 transitions. [2021-04-29 08:11:17,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 280 transitions. [2021-04-29 08:11:17,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:17,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 280 transitions. [2021-04-29 08:11:17,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.11111111111111) internal successors, (280), 9 states have internal predecessors, (280), 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 08:11:17,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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 08:11:17,546 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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 08:11:17,546 INFO L185 Difference]: Start difference. First operand has 31 places, 25 transitions, 82 flow. Second operand 9 states and 280 transitions. [2021-04-29 08:11:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 52 transitions, 208 flow [2021-04-29 08:11:17,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 206 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-29 08:11:17,552 INFO L241 Difference]: Finished difference. Result has 42 places, 42 transitions, 183 flow [2021-04-29 08:11:17,553 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2021-04-29 08:11:17,553 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2021-04-29 08:11:17,553 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:17,554 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 42 transitions, 183 flow [2021-04-29 08:11:17,555 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 42 transitions, 183 flow [2021-04-29 08:11:17,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 42 transitions, 183 flow [2021-04-29 08:11:17,587 INFO L129 PetriNetUnfolder]: 21/147 cut-off events. [2021-04-29 08:11:17,588 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2021-04-29 08:11:17,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 147 events. 21/147 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 729 event pairs, 1 based on Foata normal form. 1/142 useless extension candidates. Maximal degree in co-relation 265. Up to 25 conditions per place. [2021-04-29 08:11:17,592 INFO L146 LiptonReduction]: Number of co-enabled transitions 154 [2021-04-29 08:11:17,628 INFO L158 LiptonReduction]: Checked pairs total: 46 [2021-04-29 08:11:17,628 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:17,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-04-29 08:11:17,632 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 183 flow [2021-04-29 08:11:17,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 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 08:11:17,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:17,632 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 08:11:17,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 08:11:17,633 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1646854465, now seen corresponding path program 3 times [2021-04-29 08:11:17,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:17,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028308933] [2021-04-29 08:11:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:17,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:17,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:17,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:17,684 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 08:11:17,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028308933] [2021-04-29 08:11:17,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:17,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 08:11:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376990808] [2021-04-29 08:11:17,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 08:11:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 08:11:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 08:11:17,687 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 47 [2021-04-29 08:11:17,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 08:11:17,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:17,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 47 [2021-04-29 08:11:17,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:17,714 INFO L129 PetriNetUnfolder]: 14/127 cut-off events. [2021-04-29 08:11:17,714 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-04-29 08:11:17,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 127 events. 14/127 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 609 event pairs, 1 based on Foata normal form. 5/126 useless extension candidates. Maximal degree in co-relation 228. Up to 19 conditions per place. [2021-04-29 08:11:17,716 INFO L132 encePairwiseOnDemand]: 44/47 looper letters, 2 selfloop transitions, 6 changer transitions 1/41 dead transitions. [2021-04-29 08:11:17,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 194 flow [2021-04-29 08:11:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 08:11:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 08:11:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-04-29 08:11:17,718 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8014184397163121 [2021-04-29 08:11:17,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-04-29 08:11:17,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-04-29 08:11:17,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:17,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-04-29 08:11:17,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 08:11:17,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 08:11:17,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 08:11:17,721 INFO L185 Difference]: Start difference. First operand has 42 places, 42 transitions, 183 flow. Second operand 3 states and 113 transitions. [2021-04-29 08:11:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 194 flow [2021-04-29 08:11:17,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 08:11:17,725 INFO L241 Difference]: Finished difference. Result has 45 places, 40 transitions, 192 flow [2021-04-29 08:11:17,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2021-04-29 08:11:17,726 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2021-04-29 08:11:17,726 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:17,726 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 40 transitions, 192 flow [2021-04-29 08:11:17,727 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 40 transitions, 192 flow [2021-04-29 08:11:17,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 192 flow [2021-04-29 08:11:17,744 INFO L129 PetriNetUnfolder]: 13/129 cut-off events. [2021-04-29 08:11:17,744 INFO L130 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2021-04-29 08:11:17,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 129 events. 13/129 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 626 event pairs, 1 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 237. Up to 18 conditions per place. [2021-04-29 08:11:17,747 INFO L146 LiptonReduction]: Number of co-enabled transitions 130 [2021-04-29 08:11:17,782 INFO L158 LiptonReduction]: Checked pairs total: 31 [2021-04-29 08:11:17,783 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 08:11:17,783 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-04-29 08:11:17,785 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 199 flow [2021-04-29 08:11:17,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 08:11:17,785 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:17,785 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 08:11:17,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 08:11:17,786 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash -2079490501, now seen corresponding path program 4 times [2021-04-29 08:11:17,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:17,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071461277] [2021-04-29 08:11:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:17,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-04-29 08:11:17,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:17,872 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 08:11:17,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071461277] [2021-04-29 08:11:17,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:17,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-29 08:11:17,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873650163] [2021-04-29 08:11:17,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 08:11:17,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 08:11:17,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-29 08:11:17,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 48 [2021-04-29 08:11:17,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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 08:11:17,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:17,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 48 [2021-04-29 08:11:17,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:17,990 INFO L129 PetriNetUnfolder]: 15/129 cut-off events. [2021-04-29 08:11:17,990 INFO L130 PetriNetUnfolder]: For 43/46 co-relation queries the response was YES. [2021-04-29 08:11:17,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 129 events. 15/129 cut-off events. For 43/46 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 618 event pairs, 1 based on Foata normal form. 4/126 useless extension candidates. Maximal degree in co-relation 276. Up to 18 conditions per place. [2021-04-29 08:11:17,992 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 4 selfloop transitions, 7 changer transitions 9/44 dead transitions. [2021-04-29 08:11:17,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 239 flow [2021-04-29 08:11:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 08:11:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 08:11:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 302 transitions. [2021-04-29 08:11:17,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7864583333333334 [2021-04-29 08:11:17,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 302 transitions. [2021-04-29 08:11:17,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 302 transitions. [2021-04-29 08:11:17,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:17,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 302 transitions. [2021-04-29 08:11:17,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.75) internal successors, (302), 8 states have internal predecessors, (302), 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 08:11:17,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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 08:11:17,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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 08:11:17,999 INFO L185 Difference]: Start difference. First operand has 46 places, 41 transitions, 199 flow. Second operand 8 states and 302 transitions. [2021-04-29 08:11:17,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 239 flow [2021-04-29 08:11:18,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 225 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 08:11:18,004 INFO L241 Difference]: Finished difference. Result has 52 places, 33 transitions, 163 flow [2021-04-29 08:11:18,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2021-04-29 08:11:18,005 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2021-04-29 08:11:18,005 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:18,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 33 transitions, 163 flow [2021-04-29 08:11:18,005 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 33 transitions, 163 flow [2021-04-29 08:11:18,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 33 transitions, 163 flow [2021-04-29 08:11:18,017 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-04-29 08:11:18,017 INFO L130 PetriNetUnfolder]: For 20/21 co-relation queries the response was YES. [2021-04-29 08:11:18,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 84 events. 6/84 cut-off events. For 20/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 347 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2021-04-29 08:11:18,019 INFO L146 LiptonReduction]: Number of co-enabled transitions 96 [2021-04-29 08:11:18,089 INFO L158 LiptonReduction]: Checked pairs total: 42 [2021-04-29 08:11:18,089 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 08:11:18,089 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-04-29 08:11:18,091 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 170 flow [2021-04-29 08:11:18,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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 08:11:18,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:18,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:18,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 08:11:18,092 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2069466748, now seen corresponding path program 1 times [2021-04-29 08:11:18,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:18,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067982480] [2021-04-29 08:11:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:18,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,204 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-04-29 08:11:18,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:18,222 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 08:11:18,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067982480] [2021-04-29 08:11:18,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:18,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-29 08:11:18,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388420797] [2021-04-29 08:11:18,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-29 08:11:18,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:18,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-29 08:11:18,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-29 08:11:18,227 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2021-04-29 08:11:18,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 170 flow. Second operand has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 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 08:11:18,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:18,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2021-04-29 08:11:18,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:18,441 INFO L129 PetriNetUnfolder]: 24/175 cut-off events. [2021-04-29 08:11:18,441 INFO L130 PetriNetUnfolder]: For 140/159 co-relation queries the response was YES. [2021-04-29 08:11:18,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 175 events. 24/175 cut-off events. For 140/159 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 983 event pairs, 2 based on Foata normal form. 6/179 useless extension candidates. Maximal degree in co-relation 483. Up to 36 conditions per place. [2021-04-29 08:11:18,443 INFO L132 encePairwiseOnDemand]: 39/49 looper letters, 22 selfloop transitions, 15 changer transitions 6/57 dead transitions. [2021-04-29 08:11:18,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 368 flow [2021-04-29 08:11:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 08:11:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 08:11:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-04-29 08:11:18,446 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6303854875283447 [2021-04-29 08:11:18,446 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-04-29 08:11:18,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-04-29 08:11:18,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:18,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-04-29 08:11:18,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 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 08:11:18,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 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 08:11:18,450 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 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 08:11:18,450 INFO L185 Difference]: Start difference. First operand has 48 places, 34 transitions, 170 flow. Second operand 9 states and 278 transitions. [2021-04-29 08:11:18,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 368 flow [2021-04-29 08:11:18,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 332 flow, removed 9 selfloop flow, removed 9 redundant places. [2021-04-29 08:11:18,456 INFO L241 Difference]: Finished difference. Result has 53 places, 44 transitions, 273 flow [2021-04-29 08:11:18,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2021-04-29 08:11:18,456 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2021-04-29 08:11:18,456 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:18,457 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 44 transitions, 273 flow [2021-04-29 08:11:18,457 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 44 transitions, 273 flow [2021-04-29 08:11:18,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 44 transitions, 273 flow [2021-04-29 08:11:18,475 INFO L129 PetriNetUnfolder]: 17/150 cut-off events. [2021-04-29 08:11:18,475 INFO L130 PetriNetUnfolder]: For 168/178 co-relation queries the response was YES. [2021-04-29 08:11:18,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 150 events. 17/150 cut-off events. For 168/178 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 801 event pairs, 0 based on Foata normal form. 5/150 useless extension candidates. Maximal degree in co-relation 345. Up to 24 conditions per place. [2021-04-29 08:11:18,478 INFO L146 LiptonReduction]: Number of co-enabled transitions 114 [2021-04-29 08:11:18,572 INFO L158 LiptonReduction]: Checked pairs total: 62 [2021-04-29 08:11:18,572 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 08:11:18,572 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 116 [2021-04-29 08:11:18,575 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 278 flow [2021-04-29 08:11:18,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 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 08:11:18,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:18,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:18,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 08:11:18,576 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:18,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1581064378, now seen corresponding path program 1 times [2021-04-29 08:11:18,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:18,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042903913] [2021-04-29 08:11:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:18,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:18,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:18,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:18,618 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 08:11:18,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042903913] [2021-04-29 08:11:18,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:18,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 08:11:18,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724332148] [2021-04-29 08:11:18,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 08:11:18,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:18,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 08:11:18,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 08:11:18,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 52 [2021-04-29 08:11:18,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:18,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:18,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 52 [2021-04-29 08:11:18,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:18,658 INFO L129 PetriNetUnfolder]: 9/144 cut-off events. [2021-04-29 08:11:18,658 INFO L130 PetriNetUnfolder]: For 158/161 co-relation queries the response was YES. [2021-04-29 08:11:18,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 144 events. 9/144 cut-off events. For 158/161 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 817 event pairs, 1 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 334. Up to 20 conditions per place. [2021-04-29 08:11:18,659 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 2 selfloop transitions, 7 changer transitions 3/43 dead transitions. [2021-04-29 08:11:18,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 272 flow [2021-04-29 08:11:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 08:11:18,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 08:11:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2021-04-29 08:11:18,661 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2021-04-29 08:11:18,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2021-04-29 08:11:18,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2021-04-29 08:11:18,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:18,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2021-04-29 08:11:18,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 08:11:18,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 08:11:18,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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 08:11:18,663 INFO L185 Difference]: Start difference. First operand has 53 places, 46 transitions, 278 flow. Second operand 3 states and 126 transitions. [2021-04-29 08:11:18,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 272 flow [2021-04-29 08:11:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 265 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-04-29 08:11:18,669 INFO L241 Difference]: Finished difference. Result has 54 places, 40 transitions, 246 flow [2021-04-29 08:11:18,669 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2021-04-29 08:11:18,669 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2021-04-29 08:11:18,670 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:18,670 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 40 transitions, 246 flow [2021-04-29 08:11:18,670 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 40 transitions, 246 flow [2021-04-29 08:11:18,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 40 transitions, 246 flow [2021-04-29 08:11:18,686 INFO L129 PetriNetUnfolder]: 9/128 cut-off events. [2021-04-29 08:11:18,686 INFO L130 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2021-04-29 08:11:18,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 128 events. 9/128 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 679 event pairs, 1 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 290. Up to 17 conditions per place. [2021-04-29 08:11:18,688 INFO L146 LiptonReduction]: Number of co-enabled transitions 104 [2021-04-29 08:11:18,696 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:18,696 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:18,697 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-04-29 08:11:18,705 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 246 flow [2021-04-29 08:11:18,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:18,705 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:18,705 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:18,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 08:11:18,706 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 332241353, now seen corresponding path program 1 times [2021-04-29 08:11:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:18,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130151223] [2021-04-29 08:11:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:18,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,788 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-04-29 08:11:18,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:18,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:18,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:18,802 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 08:11:18,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130151223] [2021-04-29 08:11:18,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:18,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-29 08:11:18,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545948877] [2021-04-29 08:11:18,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 08:11:18,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:18,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 08:11:18,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-29 08:11:18,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-04-29 08:11:18,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 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 08:11:18,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:18,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-04-29 08:11:18,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:18,949 INFO L129 PetriNetUnfolder]: 13/144 cut-off events. [2021-04-29 08:11:18,950 INFO L130 PetriNetUnfolder]: For 255/267 co-relation queries the response was YES. [2021-04-29 08:11:18,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 144 events. 13/144 cut-off events. For 255/267 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 769 event pairs, 6 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 400. Up to 32 conditions per place. [2021-04-29 08:11:18,953 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 19 selfloop transitions, 10 changer transitions 4/48 dead transitions. [2021-04-29 08:11:18,953 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 374 flow [2021-04-29 08:11:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 08:11:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 08:11:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-04-29 08:11:18,955 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6418269230769231 [2021-04-29 08:11:18,955 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-04-29 08:11:18,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-04-29 08:11:18,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:18,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-04-29 08:11:18,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 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 08:11:18,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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 08:11:18,958 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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 08:11:18,959 INFO L185 Difference]: Start difference. First operand has 52 places, 40 transitions, 246 flow. Second operand 8 states and 267 transitions. [2021-04-29 08:11:18,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 374 flow [2021-04-29 08:11:18,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 339 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-04-29 08:11:18,965 INFO L241 Difference]: Finished difference. Result has 59 places, 40 transitions, 251 flow [2021-04-29 08:11:18,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2021-04-29 08:11:18,966 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2021-04-29 08:11:18,966 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:18,966 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 40 transitions, 251 flow [2021-04-29 08:11:18,967 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 40 transitions, 251 flow [2021-04-29 08:11:18,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 40 transitions, 251 flow [2021-04-29 08:11:18,981 INFO L129 PetriNetUnfolder]: 7/116 cut-off events. [2021-04-29 08:11:18,981 INFO L130 PetriNetUnfolder]: For 140/145 co-relation queries the response was YES. [2021-04-29 08:11:18,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 116 events. 7/116 cut-off events. For 140/145 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 594 event pairs, 1 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 248. Up to 17 conditions per place. [2021-04-29 08:11:18,983 INFO L146 LiptonReduction]: Number of co-enabled transitions 108 [2021-04-29 08:11:18,988 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:18,988 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:18,989 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-04-29 08:11:18,990 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 251 flow [2021-04-29 08:11:18,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 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 08:11:18,991 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:18,991 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:18,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 08:11:18,993 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash -751903030, now seen corresponding path program 1 times [2021-04-29 08:11:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:18,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754021457] [2021-04-29 08:11:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:19,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,090 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-04-29 08:11:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:19,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:19,105 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 08:11:19,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754021457] [2021-04-29 08:11:19,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:19,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-29 08:11:19,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9275514] [2021-04-29 08:11:19,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-29 08:11:19,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:19,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-29 08:11:19,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-29 08:11:19,108 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-04-29 08:11:19,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 251 flow. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:19,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-04-29 08:11:19,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:19,256 INFO L129 PetriNetUnfolder]: 12/133 cut-off events. [2021-04-29 08:11:19,257 INFO L130 PetriNetUnfolder]: For 242/252 co-relation queries the response was YES. [2021-04-29 08:11:19,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 133 events. 12/133 cut-off events. For 242/252 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 672 event pairs, 2 based on Foata normal form. 3/129 useless extension candidates. Maximal degree in co-relation 347. Up to 20 conditions per place. [2021-04-29 08:11:19,258 INFO L132 encePairwiseOnDemand]: 43/52 looper letters, 16 selfloop transitions, 16 changer transitions 1/48 dead transitions. [2021-04-29 08:11:19,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 358 flow [2021-04-29 08:11:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 08:11:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 08:11:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-04-29 08:11:19,260 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2021-04-29 08:11:19,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-04-29 08:11:19,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-04-29 08:11:19,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:19,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-04-29 08:11:19,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 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 08:11:19,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,264 INFO L185 Difference]: Start difference. First operand has 57 places, 40 transitions, 251 flow. Second operand 9 states and 296 transitions. [2021-04-29 08:11:19,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 358 flow [2021-04-29 08:11:19,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 48 transitions, 332 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-04-29 08:11:19,268 INFO L241 Difference]: Finished difference. Result has 62 places, 43 transitions, 284 flow [2021-04-29 08:11:19,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2021-04-29 08:11:19,269 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2021-04-29 08:11:19,269 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:19,269 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 43 transitions, 284 flow [2021-04-29 08:11:19,269 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 43 transitions, 284 flow [2021-04-29 08:11:19,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 43 transitions, 284 flow [2021-04-29 08:11:19,282 INFO L129 PetriNetUnfolder]: 7/119 cut-off events. [2021-04-29 08:11:19,282 INFO L130 PetriNetUnfolder]: For 133/137 co-relation queries the response was YES. [2021-04-29 08:11:19,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 119 events. 7/119 cut-off events. For 133/137 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 614 event pairs, 1 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 271. Up to 17 conditions per place. [2021-04-29 08:11:19,284 INFO L146 LiptonReduction]: Number of co-enabled transitions 108 [2021-04-29 08:11:19,289 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:19,290 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:19,290 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-04-29 08:11:19,291 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 284 flow [2021-04-29 08:11:19,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,291 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:19,291 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:19,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 08:11:19,292 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:19,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1685877046, now seen corresponding path program 2 times [2021-04-29 08:11:19,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:19,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469487764] [2021-04-29 08:11:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:19,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:19,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:19,368 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 08:11:19,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469487764] [2021-04-29 08:11:19,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:19,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-29 08:11:19,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536754534] [2021-04-29 08:11:19,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-29 08:11:19,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:19,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-29 08:11:19,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-29 08:11:19,371 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-04-29 08:11:19,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:19,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-04-29 08:11:19,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:19,517 INFO L129 PetriNetUnfolder]: 10/107 cut-off events. [2021-04-29 08:11:19,518 INFO L130 PetriNetUnfolder]: For 195/201 co-relation queries the response was YES. [2021-04-29 08:11:19,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 107 events. 10/107 cut-off events. For 195/201 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 474 event pairs, 2 based on Foata normal form. 1/102 useless extension candidates. Maximal degree in co-relation 307. Up to 18 conditions per place. [2021-04-29 08:11:19,519 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 9 changer transitions 6/44 dead transitions. [2021-04-29 08:11:19,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 44 transitions, 343 flow [2021-04-29 08:11:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 08:11:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 08:11:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2021-04-29 08:11:19,521 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2021-04-29 08:11:19,521 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 294 transitions. [2021-04-29 08:11:19,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 294 transitions. [2021-04-29 08:11:19,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:19,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 294 transitions. [2021-04-29 08:11:19,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 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 08:11:19,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,525 INFO L185 Difference]: Start difference. First operand has 62 places, 43 transitions, 284 flow. Second operand 9 states and 294 transitions. [2021-04-29 08:11:19,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 44 transitions, 343 flow [2021-04-29 08:11:19,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 44 transitions, 319 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-04-29 08:11:19,528 INFO L241 Difference]: Finished difference. Result has 64 places, 34 transitions, 200 flow [2021-04-29 08:11:19,528 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=64, PETRI_TRANSITIONS=34} [2021-04-29 08:11:19,529 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2021-04-29 08:11:19,529 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:19,529 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 34 transitions, 200 flow [2021-04-29 08:11:19,529 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 34 transitions, 200 flow [2021-04-29 08:11:19,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 34 transitions, 200 flow [2021-04-29 08:11:19,539 INFO L129 PetriNetUnfolder]: 5/82 cut-off events. [2021-04-29 08:11:19,539 INFO L130 PetriNetUnfolder]: For 82/83 co-relation queries the response was YES. [2021-04-29 08:11:19,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 82 events. 5/82 cut-off events. For 82/83 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 343 event pairs, 1 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 177. Up to 12 conditions per place. [2021-04-29 08:11:19,540 INFO L146 LiptonReduction]: Number of co-enabled transitions 96 [2021-04-29 08:11:19,544 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:19,544 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:19,545 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-04-29 08:11:19,545 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 200 flow [2021-04-29 08:11:19,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:19,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:19,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 08:11:19,546 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:19,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash -102279806, now seen corresponding path program 3 times [2021-04-29 08:11:19,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:19,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334238689] [2021-04-29 08:11:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:19,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:19,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:19,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 08:11:19,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:19,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:19,623 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 08:11:19,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334238689] [2021-04-29 08:11:19,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:19,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-29 08:11:19,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273145661] [2021-04-29 08:11:19,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-29 08:11:19,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:19,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-29 08:11:19,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-04-29 08:11:19,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-04-29 08:11:19,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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 08:11:19,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:19,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-04-29 08:11:19,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:19,727 INFO L129 PetriNetUnfolder]: 6/68 cut-off events. [2021-04-29 08:11:19,728 INFO L130 PetriNetUnfolder]: For 127/131 co-relation queries the response was YES. [2021-04-29 08:11:19,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 68 events. 6/68 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 1 based on Foata normal form. 3/68 useless extension candidates. Maximal degree in co-relation 195. Up to 13 conditions per place. [2021-04-29 08:11:19,728 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 5 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2021-04-29 08:11:19,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 265 flow [2021-04-29 08:11:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 08:11:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 08:11:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 291 transitions. [2021-04-29 08:11:19,731 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2021-04-29 08:11:19,731 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 291 transitions. [2021-04-29 08:11:19,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 291 transitions. [2021-04-29 08:11:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:19,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 291 transitions. [2021-04-29 08:11:19,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.333333333333336) internal successors, (291), 9 states have internal predecessors, (291), 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 08:11:19,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 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 08:11:19,734 INFO L185 Difference]: Start difference. First operand has 57 places, 34 transitions, 200 flow. Second operand 9 states and 291 transitions. [2021-04-29 08:11:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 265 flow [2021-04-29 08:11:19,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 38 transitions, 232 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-04-29 08:11:19,737 INFO L241 Difference]: Finished difference. Result has 57 places, 25 transitions, 134 flow [2021-04-29 08:11:19,737 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=57, PETRI_TRANSITIONS=25} [2021-04-29 08:11:19,737 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2021-04-29 08:11:19,737 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:19,737 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 25 transitions, 134 flow [2021-04-29 08:11:19,738 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 25 transitions, 134 flow [2021-04-29 08:11:19,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 25 transitions, 134 flow [2021-04-29 08:11:19,743 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-04-29 08:11:19,743 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-04-29 08:11:19,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 37 events. 2/37 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2021-04-29 08:11:19,743 INFO L146 LiptonReduction]: Number of co-enabled transitions 36 [2021-04-29 08:11:19,746 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:19,746 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:19,746 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 08:11:19,747 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 134 flow [2021-04-29 08:11:19,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 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 08:11:19,747 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:19,747 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:19,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 08:11:19,748 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash 591004264, now seen corresponding path program 4 times [2021-04-29 08:11:19,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:19,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341749309] [2021-04-29 08:11:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:19,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:19,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:19,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:19,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:19,825 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 08:11:19,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341749309] [2021-04-29 08:11:19,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:19,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-29 08:11:19,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428625413] [2021-04-29 08:11:19,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-29 08:11:19,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-29 08:11:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-29 08:11:19,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-04-29 08:11:19,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:19,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-04-29 08:11:19,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:19,946 INFO L129 PetriNetUnfolder]: 2/39 cut-off events. [2021-04-29 08:11:19,946 INFO L130 PetriNetUnfolder]: For 65/69 co-relation queries the response was YES. [2021-04-29 08:11:19,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 39 events. 2/39 cut-off events. For 65/69 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2021-04-29 08:11:19,947 INFO L132 encePairwiseOnDemand]: 43/52 looper letters, 2 selfloop transitions, 9 changer transitions 2/26 dead transitions. [2021-04-29 08:11:19,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 26 transitions, 160 flow [2021-04-29 08:11:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 08:11:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 08:11:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2021-04-29 08:11:19,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2021-04-29 08:11:19,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 252 transitions. [2021-04-29 08:11:19,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 252 transitions. [2021-04-29 08:11:19,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:19,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 252 transitions. [2021-04-29 08:11:19,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:19,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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 08:11:19,955 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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 08:11:19,955 INFO L185 Difference]: Start difference. First operand has 52 places, 25 transitions, 134 flow. Second operand 8 states and 252 transitions. [2021-04-29 08:11:19,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 26 transitions, 160 flow [2021-04-29 08:11:19,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 112 flow, removed 2 selfloop flow, removed 20 redundant places. [2021-04-29 08:11:19,957 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 107 flow [2021-04-29 08:11:19,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2021-04-29 08:11:19,957 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2021-04-29 08:11:19,957 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:19,957 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 24 transitions, 107 flow [2021-04-29 08:11:19,958 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 24 transitions, 107 flow [2021-04-29 08:11:19,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 24 transitions, 107 flow [2021-04-29 08:11:19,962 INFO L129 PetriNetUnfolder]: 2/35 cut-off events. [2021-04-29 08:11:19,962 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2021-04-29 08:11:19,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 35 events. 2/35 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 61. Up to 7 conditions per place. [2021-04-29 08:11:19,962 INFO L146 LiptonReduction]: Number of co-enabled transitions 22 [2021-04-29 08:11:19,996 INFO L158 LiptonReduction]: Checked pairs total: 3 [2021-04-29 08:11:19,997 INFO L160 LiptonReduction]: Total number of compositions: 1 [2021-04-29 08:11:19,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-04-29 08:11:19,998 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 107 flow [2021-04-29 08:11:19,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:19,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 08:11:19,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 08:11:19,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-29 08:11:19,999 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-29 08:11:19,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 08:11:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1524978280, now seen corresponding path program 5 times [2021-04-29 08:11:19,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 08:11:19,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018618913] [2021-04-29 08:11:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 08:11:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 08:11:20,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:20,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:20,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:20,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:20,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 08:11:20,097 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-04-29 08:11:20,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-29 08:11:20,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 08:11:20,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 08:11:20,111 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 08:11:20,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018618913] [2021-04-29 08:11:20,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 08:11:20,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-29 08:11:20,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440149943] [2021-04-29 08:11:20,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-29 08:11:20,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 08:11:20,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-29 08:11:20,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-29 08:11:20,115 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2021-04-29 08:11:20,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 107 flow. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:20,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 08:11:20,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2021-04-29 08:11:20,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 08:11:20,214 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-04-29 08:11:20,214 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-04-29 08:11:20,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 13 events. 0/13 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 08:11:20,215 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-04-29 08:11:20,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 13 transitions, 71 flow [2021-04-29 08:11:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-29 08:11:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-04-29 08:11:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-04-29 08:11:20,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2021-04-29 08:11:20,217 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-04-29 08:11:20,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-04-29 08:11:20,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 08:11:20,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-04-29 08:11:20,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 08:11:20,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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 08:11:20,220 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 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 08:11:20,220 INFO L185 Difference]: Start difference. First operand has 39 places, 24 transitions, 107 flow. Second operand 8 states and 248 transitions. [2021-04-29 08:11:20,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 13 transitions, 71 flow [2021-04-29 08:11:20,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-04-29 08:11:20,221 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-04-29 08:11:20,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-04-29 08:11:20,221 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -11 predicate places. [2021-04-29 08:11:20,221 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 08:11:20,221 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 0 transitions, 0 flow [2021-04-29 08:11:20,222 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 0 transitions, 0 flow [2021-04-29 08:11:20,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 08:11:20,222 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 08:11:20,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 08:11:20,222 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 08:11:20,222 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 08:11:20,222 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 08:11:20,223 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 08:11:20,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 08:11:20,225 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 08:11:20,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 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 08:11:20,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-29 08:11:20,230 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 08:11:20 BasicIcfg [2021-04-29 08:11:20,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 08:11:20,232 INFO L168 Benchmark]: Toolchain (without parser) took 4921.66 ms. Allocated memory was 312.5 MB in the beginning and 375.4 MB in the end (delta: 62.9 MB). Free memory was 280.2 MB in the beginning and 265.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:20,232 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.72 ms. Allocated memory is still 312.5 MB. Free memory is still 281.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 08:11:20,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 312.5 MB. Free memory was 294.8 MB in the beginning and 293.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 08:11:20,232 INFO L168 Benchmark]: Boogie Preprocessor took 18.38 ms. Allocated memory is still 312.5 MB. Free memory was 293.3 MB in the beginning and 292.4 MB in the end (delta: 917.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:20,233 INFO L168 Benchmark]: RCFGBuilder took 318.73 ms. Allocated memory is still 312.5 MB. Free memory was 292.3 MB in the beginning and 287.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:20,234 INFO L168 Benchmark]: TraceAbstraction took 4471.25 ms. Allocated memory was 312.5 MB in the beginning and 375.4 MB in the end (delta: 62.9 MB). Free memory was 287.0 MB in the beginning and 265.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.0 GB. [2021-04-29 08:11:20,235 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 0.72 ms. Allocated memory is still 312.5 MB. Free memory is still 281.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 312.5 MB. Free memory was 294.8 MB in the beginning and 293.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.38 ms. Allocated memory is still 312.5 MB. Free memory was 293.3 MB in the beginning and 292.4 MB in the end (delta: 917.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 318.73 ms. Allocated memory is still 312.5 MB. Free memory was 292.3 MB in the beginning and 287.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4471.25 ms. Allocated memory was 312.5 MB in the beginning and 375.4 MB in the end (delta: 62.9 MB). Free memory was 287.0 MB in the beginning and 265.5 MB in the end (delta: 21.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 616.9ms, 38 PlacesBefore, 38 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 4 FixpointIterations, 6 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 1430 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 664, positive: 540, positive conditional: 540, positive unconditional: 0, negative: 124, negative conditional: 124, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 244, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 244, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 244, positive: 201, positive conditional: 0, positive unconditional: 201, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 235, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 208, negative conditional: 0, negative unconditional: 208, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 664, positive: 331, positive conditional: 331, positive unconditional: 0, negative: 89, negative conditional: 89, negative unconditional: 0, unknown: 244, unknown conditional: 244, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 244, Positive cache size: 209, Positive conditional cache size: 209, 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: 40.2ms, 44 PlacesBefore, 31 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 17, positive conditional: 17, 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: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 257, Positive cache size: 217, Positive conditional cache size: 217, Positive unconditional cache size: 0, Negative cache size: 40, Negative conditional cache size: 40, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 73.3ms, 42 PlacesBefore, 42 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 46 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 15, positive conditional: 9, positive unconditional: 6, 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: 18, positive: 15, positive conditional: 9, positive unconditional: 6, 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: 18, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 13, positive conditional: 10, positive unconditional: 3, negative: 11, negative conditional: 10, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 275, Positive cache size: 232, Positive conditional cache size: 232, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.9ms, 45 PlacesBefore, 46 PlacesAfterwards, 40 TransitionsBefore, 41 TransitionsAfterwards, 130 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 31 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 2, positive unconditional: 4, 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: 6, positive: 6, positive conditional: 2, positive unconditional: 4, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 16, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 281, Positive cache size: 238, Positive conditional cache size: 238, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 84.0ms, 52 PlacesBefore, 48 PlacesAfterwards, 33 TransitionsBefore, 34 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 9, positive unconditional: 0, 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: 11, positive: 9, positive conditional: 9, positive unconditional: 0, 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: 11, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 8, negative conditional: 5, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 292, Positive cache size: 247, Positive conditional cache size: 247, Positive unconditional cache size: 0, Negative cache size: 45, Negative conditional cache size: 45, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 115.3ms, 53 PlacesBefore, 53 PlacesAfterwards, 44 TransitionsBefore, 46 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 62 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 17, positive conditional: 13, positive unconditional: 4, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 17, positive conditional: 13, positive unconditional: 4, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 44, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 26.4ms, 54 PlacesBefore, 52 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 104 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): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 21.7ms, 59 PlacesBefore, 57 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 108 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): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 20.3ms, 62 PlacesBefore, 62 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 108 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): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 15.1ms, 64 PlacesBefore, 57 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 96 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): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 8.2ms, 57 PlacesBefore, 52 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 36 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): 310, Positive cache size: 264, Positive conditional cache size: 264, 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: 38.9ms, 40 PlacesBefore, 39 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 22 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, 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: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 3, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 311, Positive cache size: 265, Positive conditional cache size: 265, 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: 0.9ms, 27 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): 311, Positive cache size: 265, Positive conditional cache size: 265, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - PositiveResult [Line: 60]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4358.0ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1673.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 791.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 200 SDslu, 69 SDs, 0 SdLazy, 469 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 371.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1066.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=8, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.0ms SsaConstructionTime, 149.3ms SatisfiabilityAnalysisTime, 935.3ms InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...