/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 14:59:43,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 14:59:43,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 14:59:43,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 14:59:43,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 14:59:43,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 14:59:43,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 14:59:43,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 14:59:43,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 14:59:43,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 14:59:43,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 14:59:43,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 14:59:43,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 14:59:43,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 14:59:43,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 14:59:43,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 14:59:43,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 14:59:43,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 14:59:43,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 14:59:43,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 14:59:43,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 14:59:43,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 14:59:43,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 14:59:43,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 14:59:43,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 14:59:43,371 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 14:59:43,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 14:59:43,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 14:59:43,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 14:59:43,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 14:59:43,408 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 14:59:43,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 14:59:43,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 14:59:43,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 14:59:43,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 14:59:43,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 14:59:43,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 14:59:43,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 14:59:43,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 14:59:43,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 14:59:43,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 14:59:43,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 14:59:43,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 14:59:43,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 14:59:43,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 14:59:43,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 14:59:43,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 14:59:43,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 14:59:43,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 14:59:43,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 14:59:43,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 14:59:43,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 14:59:43,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 14:59:43,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 14:59:43,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 14:59:43,743 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 14:59:43,744 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 14:59:43,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-03-26 14:59:43,756 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-03-26 14:59:43,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 14:59:43,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 14:59:43,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 14:59:43,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 14:59:43,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 14:59:43,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 14:59:43,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 14:59:43,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 14:59:43,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 14:59:43,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... [2021-03-26 14:59:43,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 14:59:43,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 14:59:43,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 14:59:43,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 14:59:43,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 14:59:43,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 14:59:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 14:59:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 14:59:43,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 14:59:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 14:59:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 14:59:43,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 14:59:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 14:59:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 14:59:43,877 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 14:59:44,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 14:59:44,069 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 14:59:44,070 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 02:59:44 BoogieIcfgContainer [2021-03-26 14:59:44,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 14:59:44,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 14:59:44,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 14:59:44,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 14:59:44,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 02:59:43" (1/2) ... [2021-03-26 14:59:44,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5396bb63 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 02:59:44, skipping insertion in model container [2021-03-26 14:59:44,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 02:59:44" (2/2) ... [2021-03-26 14:59:44,077 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-03-26 14:59:44,082 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 14:59:44,085 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 14:59:44,086 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 14:59:44,170 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-26 14:59:44,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 14:59:44,220 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 14:59:44,220 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 14:59:44,220 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 14:59:44,220 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 14:59:44,220 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 14:59:44,221 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 14:59:44,221 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 14:59:44,221 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 14:59:44,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-03-26 14:59:44,271 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-26 14:59:44,272 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:59:44,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:59:44,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-03-26 14:59:44,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-03-26 14:59:44,281 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:44,300 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-26 14:59:44,307 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-26 14:59:44,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 66 flow [2021-03-26 14:59:44,327 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-26 14:59:44,328 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:59:44,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 14:59:44,329 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-26 14:59:44,634 INFO L154 LiptonReduction]: Checked pairs total: 566 [2021-03-26 14:59:44,635 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 14:59:44,637 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 357 [2021-03-26 14:59:44,647 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 14:59:44,647 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 14:59:44,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:44,648 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] [2021-03-26 14:59:44,648 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:44,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:44,653 INFO L82 PathProgramCache]: Analyzing trace with hash 183877987, now seen corresponding path program 1 times [2021-03-26 14:59:44,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:44,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982461493] [2021-03-26 14:59:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:44,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:44,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:44,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:44,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:44,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:44,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:44,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:44,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 14:59:44,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:44,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982461493] [2021-03-26 14:59:44,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:44,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:44,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711328599] [2021-03-26 14:59:44,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 14:59:44,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:44,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 14:59:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-26 14:59:44,894 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 38 [2021-03-26 14:59:44,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:44,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:44,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 38 [2021-03-26 14:59:44,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:44,990 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-03-26 14:59:44,990 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 14:59:44,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 44 events. 1/44 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 115 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 52. Up to 5 conditions per place. [2021-03-26 14:59:44,992 INFO L132 encePairwiseOnDemand]: 32/38 looper letters, 7 selfloop transitions, 7 changer transitions 2/30 dead transitions. [2021-03-26 14:59:44,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 104 flow [2021-03-26 14:59:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 14:59:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 14:59:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2021-03-26 14:59:45,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8453947368421053 [2021-03-26 14:59:45,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 257 transitions. [2021-03-26 14:59:45,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 257 transitions. [2021-03-26 14:59:45,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:45,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 257 transitions. [2021-03-26 14:59:45,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.125) internal successors, (257), 8 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,017 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 52 flow. Second operand 8 states and 257 transitions. [2021-03-26 14:59:45,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 104 flow [2021-03-26 14:59:45,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 14:59:45,022 INFO L241 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2021-03-26 14:59:45,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2021-03-26 14:59:45,024 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-26 14:59:45,024 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:45,024 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 25 transitions, 82 flow [2021-03-26 14:59:45,025 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 25 transitions, 82 flow [2021-03-26 14:59:45,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 25 transitions, 82 flow [2021-03-26 14:59:45,031 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2021-03-26 14:59:45,031 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 14:59:45,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 37 events. 0/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 14:59:45,032 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-26 14:59:45,092 INFO L154 LiptonReduction]: Checked pairs total: 334 [2021-03-26 14:59:45,093 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 14:59:45,093 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 69 [2021-03-26 14:59:45,095 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 87 flow [2021-03-26 14:59:45,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,096 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:45,096 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] [2021-03-26 14:59:45,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 14:59:45,096 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:45,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:45,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1578764417, now seen corresponding path program 2 times [2021-03-26 14:59:45,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:45,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404627351] [2021-03-26 14:59:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:45,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-26 14:59:45,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:45,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404627351] [2021-03-26 14:59:45,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:45,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:45,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514241927] [2021-03-26 14:59:45,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 14:59:45,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:45,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 14:59:45,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-26 14:59:45,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 41 [2021-03-26 14:59:45,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 87 flow. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:45,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 41 [2021-03-26 14:59:45,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:45,323 INFO L129 PetriNetUnfolder]: 1/38 cut-off events. [2021-03-26 14:59:45,323 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-26 14:59:45,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 38 events. 1/38 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2021-03-26 14:59:45,324 INFO L132 encePairwiseOnDemand]: 33/41 looper letters, 4 selfloop transitions, 5 changer transitions 5/28 dead transitions. [2021-03-26 14:59:45,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 130 flow [2021-03-26 14:59:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 14:59:45,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 14:59:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 285 transitions. [2021-03-26 14:59:45,331 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7723577235772358 [2021-03-26 14:59:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 285 transitions. [2021-03-26 14:59:45,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 285 transitions. [2021-03-26 14:59:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:45,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 285 transitions. [2021-03-26 14:59:45,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.666666666666668) internal successors, (285), 9 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,337 INFO L185 Difference]: Start difference. First operand has 31 places, 25 transitions, 87 flow. Second operand 9 states and 285 transitions. [2021-03-26 14:59:45,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 130 flow [2021-03-26 14:59:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 126 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 14:59:45,339 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 82 flow [2021-03-26 14:59:45,340 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=85, 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=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2021-03-26 14:59:45,340 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-26 14:59:45,340 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:45,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 22 transitions, 82 flow [2021-03-26 14:59:45,341 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 22 transitions, 82 flow [2021-03-26 14:59:45,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 22 transitions, 82 flow [2021-03-26 14:59:45,350 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-26 14:59:45,350 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-03-26 14:59:45,350 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 27 events. 0/27 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 14:59:45,352 INFO L142 LiptonReduction]: Number of co-enabled transitions 70 [2021-03-26 14:59:45,531 INFO L154 LiptonReduction]: Checked pairs total: 139 [2021-03-26 14:59:45,532 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-26 14:59:45,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 192 [2021-03-26 14:59:45,533 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 78 flow [2021-03-26 14:59:45,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:45,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:45,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 14:59:45,534 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash 126655757, now seen corresponding path program 1 times [2021-03-26 14:59:45,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:45,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463835045] [2021-03-26 14:59:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:45,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:45,579 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 14:59:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:45,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:45,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:45,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463835045] [2021-03-26 14:59:45,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:45,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:45,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74653476] [2021-03-26 14:59:45,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 14:59:45,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 14:59:45,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 14:59:45,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2021-03-26 14:59:45,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:45,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2021-03-26 14:59:45,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:45,685 INFO L129 PetriNetUnfolder]: 20/87 cut-off events. [2021-03-26 14:59:45,685 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-26 14:59:45,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 87 events. 20/87 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 365 event pairs, 7 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 206. Up to 31 conditions per place. [2021-03-26 14:59:45,687 INFO L132 encePairwiseOnDemand]: 37/47 looper letters, 19 selfloop transitions, 6 changer transitions 4/36 dead transitions. [2021-03-26 14:59:45,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 198 flow [2021-03-26 14:59:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 14:59:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 14:59:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2021-03-26 14:59:45,690 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2021-03-26 14:59:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2021-03-26 14:59:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2021-03-26 14:59:45,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:45,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2021-03-26 14:59:45,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,692 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,692 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 78 flow. Second operand 6 states and 183 transitions. [2021-03-26 14:59:45,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 198 flow [2021-03-26 14:59:45,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 154 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-26 14:59:45,698 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 102 flow [2021-03-26 14:59:45,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-26 14:59:45,698 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-26 14:59:45,698 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:45,699 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 24 transitions, 102 flow [2021-03-26 14:59:45,700 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 24 transitions, 102 flow [2021-03-26 14:59:45,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 24 transitions, 102 flow [2021-03-26 14:59:45,704 INFO L129 PetriNetUnfolder]: 2/39 cut-off events. [2021-03-26 14:59:45,705 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 14:59:45,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 39 events. 2/39 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 31. Up to 9 conditions per place. [2021-03-26 14:59:45,706 INFO L142 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-26 14:59:45,837 INFO L154 LiptonReduction]: Checked pairs total: 110 [2021-03-26 14:59:45,838 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 14:59:45,838 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 140 [2021-03-26 14:59:45,839 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2021-03-26 14:59:45,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,839 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:45,839 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:45,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 14:59:45,840 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1266732323, now seen corresponding path program 1 times [2021-03-26 14:59:45,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:45,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399031496] [2021-03-26 14:59:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:45,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:45,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:45,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:45,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399031496] [2021-03-26 14:59:45,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:45,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 14:59:45,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859550552] [2021-03-26 14:59:45,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 14:59:45,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:45,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 14:59:45,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 14:59:45,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 50 [2021-03-26 14:59:45,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:45,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 50 [2021-03-26 14:59:45,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:45,882 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-03-26 14:59:45,883 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-26 14:59:45,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 41 events. 3/41 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 1 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 54. Up to 10 conditions per place. [2021-03-26 14:59:45,883 INFO L132 encePairwiseOnDemand]: 47/50 looper letters, 2 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-03-26 14:59:45,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 112 flow [2021-03-26 14:59:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 14:59:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 14:59:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2021-03-26 14:59:45,887 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8933333333333333 [2021-03-26 14:59:45,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2021-03-26 14:59:45,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2021-03-26 14:59:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:45,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2021-03-26 14:59:45,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,889 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 3 states and 134 transitions. [2021-03-26 14:59:45,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 112 flow [2021-03-26 14:59:45,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 100 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-26 14:59:45,891 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 101 flow [2021-03-26 14:59:45,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2021-03-26 14:59:45,892 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2021-03-26 14:59:45,892 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:45,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 23 transitions, 101 flow [2021-03-26 14:59:45,892 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 23 transitions, 101 flow [2021-03-26 14:59:45,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 23 transitions, 101 flow [2021-03-26 14:59:45,898 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-03-26 14:59:45,898 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2021-03-26 14:59:45,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 41 events. 3/41 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 1 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 10 conditions per place. [2021-03-26 14:59:45,899 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-26 14:59:45,932 INFO L154 LiptonReduction]: Checked pairs total: 53 [2021-03-26 14:59:45,932 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 14:59:45,932 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-26 14:59:45,933 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 103 flow [2021-03-26 14:59:45,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:45,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:45,934 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:45,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 14:59:45,934 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash 969625218, now seen corresponding path program 1 times [2021-03-26 14:59:45,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823253668] [2021-03-26 14:59:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:45,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 14:59:45,970 INFO L142 QuantifierPusher]: treesize reduction 50, result has 24.2 percent of original size [2021-03-26 14:59:45,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-26 14:59:45,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:45,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-26 14:59:45,999 INFO L142 QuantifierPusher]: treesize reduction 11, result has 62.1 percent of original size [2021-03-26 14:59:45,999 INFO L147 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size 12 [2021-03-26 14:59:46,014 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-26 14:59:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:46,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823253668] [2021-03-26 14:59:46,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:46,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:46,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979244895] [2021-03-26 14:59:46,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 14:59:46,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:46,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 14:59:46,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 14:59:46,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 51 [2021-03-26 14:59:46,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:46,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 51 [2021-03-26 14:59:46,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:46,085 INFO L129 PetriNetUnfolder]: 18/74 cut-off events. [2021-03-26 14:59:46,085 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-03-26 14:59:46,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 74 events. 18/74 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 257 event pairs, 2 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 98. Up to 23 conditions per place. [2021-03-26 14:59:46,087 INFO L132 encePairwiseOnDemand]: 42/51 looper letters, 19 selfloop transitions, 8 changer transitions 1/34 dead transitions. [2021-03-26 14:59:46,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 195 flow [2021-03-26 14:59:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 14:59:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 14:59:46,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2021-03-26 14:59:46,088 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2021-03-26 14:59:46,088 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 180 transitions. [2021-03-26 14:59:46,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 180 transitions. [2021-03-26 14:59:46,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:46,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 180 transitions. [2021-03-26 14:59:46,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,090 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,090 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 103 flow. Second operand 6 states and 180 transitions. [2021-03-26 14:59:46,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 195 flow [2021-03-26 14:59:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 183 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-26 14:59:46,095 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 124 flow [2021-03-26 14:59:46,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-26 14:59:46,095 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-26 14:59:46,095 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:46,095 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 24 transitions, 124 flow [2021-03-26 14:59:46,096 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 24 transitions, 124 flow [2021-03-26 14:59:46,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 24 transitions, 124 flow [2021-03-26 14:59:46,103 INFO L129 PetriNetUnfolder]: 3/42 cut-off events. [2021-03-26 14:59:46,104 INFO L130 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2021-03-26 14:59:46,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 42 events. 3/42 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 1 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2021-03-26 14:59:46,104 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-26 14:59:46,212 INFO L154 LiptonReduction]: Checked pairs total: 22 [2021-03-26 14:59:46,212 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 14:59:46,212 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 117 [2021-03-26 14:59:46,215 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 116 flow [2021-03-26 14:59:46,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,216 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:46,216 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:46,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 14:59:46,216 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:46,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1255637420, now seen corresponding path program 2 times [2021-03-26 14:59:46,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:46,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109453566] [2021-03-26 14:59:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:46,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:46,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:46,279 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 14:59:46,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:46,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:46,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:46,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109453566] [2021-03-26 14:59:46,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:46,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:46,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909215118] [2021-03-26 14:59:46,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 14:59:46,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:46,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 14:59:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 14:59:46,301 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2021-03-26 14:59:46,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:46,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2021-03-26 14:59:46,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:46,340 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-03-26 14:59:46,340 INFO L130 PetriNetUnfolder]: For 88/92 co-relation queries the response was YES. [2021-03-26 14:59:46,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 38 events. 6/38 cut-off events. For 88/92 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 78 event pairs, 5 based on Foata normal form. 5/39 useless extension candidates. Maximal degree in co-relation 66. Up to 21 conditions per place. [2021-03-26 14:59:46,341 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 9 selfloop transitions, 2 changer transitions 5/21 dead transitions. [2021-03-26 14:59:46,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 21 transitions, 135 flow [2021-03-26 14:59:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 14:59:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 14:59:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2021-03-26 14:59:46,342 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2021-03-26 14:59:46,342 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 142 transitions. [2021-03-26 14:59:46,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 142 transitions. [2021-03-26 14:59:46,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:46,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 142 transitions. [2021-03-26 14:59:46,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,344 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,344 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 116 flow. Second operand 5 states and 142 transitions. [2021-03-26 14:59:46,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 21 transitions, 135 flow [2021-03-26 14:59:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 110 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-26 14:59:46,345 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 66 flow [2021-03-26 14:59:46,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-26 14:59:46,346 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2021-03-26 14:59:46,346 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:46,346 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 66 flow [2021-03-26 14:59:46,346 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 66 flow [2021-03-26 14:59:46,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 16 transitions, 66 flow [2021-03-26 14:59:46,351 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-26 14:59:46,351 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-26 14:59:46,352 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 22 events. 0/22 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 14:59:46,353 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-26 14:59:46,410 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-26 14:59:46,411 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 14:59:46,411 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-26 14:59:46,412 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 69 flow [2021-03-26 14:59:46,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:46,412 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:46,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 14:59:46,412 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -330558989, now seen corresponding path program 1 times [2021-03-26 14:59:46,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:46,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851749839] [2021-03-26 14:59:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:46,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851749839] [2021-03-26 14:59:46,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:46,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 14:59:46,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525971897] [2021-03-26 14:59:46,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 14:59:46,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:46,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 14:59:46,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 14:59:46,448 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2021-03-26 14:59:46,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:46,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2021-03-26 14:59:46,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:46,460 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 14:59:46,460 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-26 14:59:46,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 24 events. 0/24 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2021-03-26 14:59:46,460 INFO L132 encePairwiseOnDemand]: 50/55 looper letters, 3 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2021-03-26 14:59:46,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 16 transitions, 81 flow [2021-03-26 14:59:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 14:59:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 14:59:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2021-03-26 14:59:46,462 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2021-03-26 14:59:46,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 137 transitions. [2021-03-26 14:59:46,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 137 transitions. [2021-03-26 14:59:46,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:46,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 137 transitions. [2021-03-26 14:59:46,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,464 INFO L185 Difference]: Start difference. First operand has 28 places, 16 transitions, 69 flow. Second operand 3 states and 137 transitions. [2021-03-26 14:59:46,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 16 transitions, 81 flow [2021-03-26 14:59:46,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 71 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 14:59:46,466 INFO L241 Difference]: Finished difference. Result has 27 places, 16 transitions, 72 flow [2021-03-26 14:59:46,466 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=16} [2021-03-26 14:59:46,466 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-03-26 14:59:46,466 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:46,466 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 16 transitions, 72 flow [2021-03-26 14:59:46,467 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 16 transitions, 72 flow [2021-03-26 14:59:46,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 16 transitions, 72 flow [2021-03-26 14:59:46,469 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-26 14:59:46,469 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 14:59:46,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 0/24 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-03-26 14:59:46,470 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-26 14:59:46,520 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 14:59:46,520 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 14:59:46,521 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-26 14:59:46,521 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 70 flow [2021-03-26 14:59:46,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:46,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:46,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 14:59:46,522 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -251790411, now seen corresponding path program 1 times [2021-03-26 14:59:46,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:46,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232401942] [2021-03-26 14:59:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:46,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 14:59:46,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 14:59:46,555 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-26 14:59:46,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 14:59:46,566 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-26 14:59:46,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 14:59:46,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:46,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232401942] [2021-03-26 14:59:46,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:46,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 14:59:46,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343286442] [2021-03-26 14:59:46,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 14:59:46,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:46,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 14:59:46,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 14:59:46,578 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2021-03-26 14:59:46,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 15 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:46,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2021-03-26 14:59:46,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:46,598 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 14:59:46,598 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-26 14:59:46,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 15 events. 0/15 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 14:59:46,598 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 4 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2021-03-26 14:59:46,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 13 transitions, 75 flow [2021-03-26 14:59:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 14:59:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 14:59:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2021-03-26 14:59:46,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2021-03-26 14:59:46,599 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2021-03-26 14:59:46,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2021-03-26 14:59:46,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:46,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2021-03-26 14:59:46,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,601 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,601 INFO L185 Difference]: Start difference. First operand has 26 places, 15 transitions, 70 flow. Second operand 5 states and 135 transitions. [2021-03-26 14:59:46,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 13 transitions, 75 flow [2021-03-26 14:59:46,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 62 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 14:59:46,602 INFO L241 Difference]: Finished difference. Result has 27 places, 12 transitions, 48 flow [2021-03-26 14:59:46,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=12} [2021-03-26 14:59:46,602 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-03-26 14:59:46,603 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:46,603 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 12 transitions, 48 flow [2021-03-26 14:59:46,603 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 12 transitions, 48 flow [2021-03-26 14:59:46,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 12 transitions, 48 flow [2021-03-26 14:59:46,610 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 14:59:46,611 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-26 14:59:46,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 14 events. 0/14 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 14:59:46,611 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-26 14:59:46,612 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 14:59:46,612 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 14:59:46,612 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 14:59:46,612 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 12 transitions, 48 flow [2021-03-26 14:59:46,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 14:59:46,613 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 14:59:46,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 14:59:46,613 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 14:59:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 14:59:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash 527911921, now seen corresponding path program 2 times [2021-03-26 14:59:46,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 14:59:46,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827107122] [2021-03-26 14:59:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 14:59:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 14:59:46,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 14:59:46,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 14:59:46,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:46,658 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 14:59:46,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 14:59:46,667 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-26 14:59:46,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 14:59:46,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 14:59:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 14:59:46,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827107122] [2021-03-26 14:59:46,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 14:59:46,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 14:59:46,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808722662] [2021-03-26 14:59:46,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 14:59:46,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 14:59:46,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 14:59:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 14:59:46,671 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2021-03-26 14:59:46,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 12 transitions, 48 flow. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 14:59:46,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2021-03-26 14:59:46,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 14:59:46,684 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-26 14:59:46,684 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 14:59:46,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 8 events. 0/8 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 14:59:46,684 INFO L132 encePairwiseOnDemand]: 52/56 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-03-26 14:59:46,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 7 transitions, 41 flow [2021-03-26 14:59:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 14:59:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 14:59:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2021-03-26 14:59:46,686 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46785714285714286 [2021-03-26 14:59:46,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2021-03-26 14:59:46,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2021-03-26 14:59:46,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 14:59:46,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2021-03-26 14:59:46,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 56.0) internal successors, (336), 6 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,689 INFO L185 Difference]: Start difference. First operand has 24 places, 12 transitions, 48 flow. Second operand 5 states and 131 transitions. [2021-03-26 14:59:46,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 7 transitions, 41 flow [2021-03-26 14:59:46,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 7 transitions, 36 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 14:59:46,689 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2021-03-26 14:59:46,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2021-03-26 14:59:46,690 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -10 predicate places. [2021-03-26 14:59:46,690 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 14:59:46,690 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-26 14:59:46,690 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 0 transitions, 0 flow [2021-03-26 14:59:46,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 14:59:46,692 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 14:59:46,692 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 14:59:46,693 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. [2021-03-26 14:59:46,694 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 14:59:46,694 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 14:59:46,694 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 14:59:46,694 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-26 14:59:46,694 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 14:59:46,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 14:59:46,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 14:59:46,698 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 02:59:46 BasicIcfg [2021-03-26 14:59:46,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 14:59:46,699 INFO L168 Benchmark]: Toolchain (without parser) took 2916.52 ms. Allocated memory is still 337.6 MB. Free memory was 318.3 MB in the beginning and 129.1 MB in the end (delta: 189.2 MB). Peak memory consumption was 190.7 MB. Max. memory is 16.0 GB. [2021-03-26 14:59:46,699 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 337.6 MB. Free memory is still 319.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 14:59:46,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 337.6 MB. Free memory was 318.2 MB in the beginning and 316.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 14:59:46,699 INFO L168 Benchmark]: Boogie Preprocessor took 11.98 ms. Allocated memory is still 337.6 MB. Free memory was 316.8 MB in the beginning and 315.9 MB in the end (delta: 895.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 14:59:46,700 INFO L168 Benchmark]: RCFGBuilder took 247.47 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 304.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 14:59:46,700 INFO L168 Benchmark]: TraceAbstraction took 2626.42 ms. Allocated memory is still 337.6 MB. Free memory was 304.2 MB in the beginning and 129.1 MB in the end (delta: 175.2 MB). Peak memory consumption was 176.0 MB. Max. memory is 16.0 GB. [2021-03-26 14:59:46,704 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 0.49 ms. Allocated memory is still 337.6 MB. Free memory is still 319.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.22 ms. Allocated memory is still 337.6 MB. Free memory was 318.2 MB in the beginning and 316.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.98 ms. Allocated memory is still 337.6 MB. Free memory was 316.8 MB in the beginning and 315.9 MB in the end (delta: 895.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 247.47 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 304.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2626.42 ms. Allocated memory is still 337.6 MB. Free memory was 304.2 MB in the beginning and 129.1 MB in the end (delta: 175.2 MB). Peak memory consumption was 176.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 328.1ms, 34 PlacesBefore, 27 PlacesAfterwards, 27 TransitionsBefore, 20 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 566 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 285, positive: 233, positive conditional: 233, positive unconditional: 0, negative: 52, negative conditional: 52, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 285, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 285, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 194, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 194, positive: 152, positive conditional: 0, positive unconditional: 152, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 168, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 285, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 194, unknown conditional: 0, unknown unconditional: 194] , Statistics on independence cache: Total cache size (in pairs): 194, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 68.0ms, 33 PlacesBefore, 31 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 334 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 145, positive: 103, positive conditional: 103, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 145, positive: 103, positive conditional: 7, positive unconditional: 96, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 145, positive: 103, positive conditional: 7, positive unconditional: 96, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 145, positive: 92, positive conditional: 7, positive unconditional: 85, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 173, Positive conditional cache size: 0, Positive unconditional cache size: 173, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 190.7ms, 39 PlacesBefore, 34 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 70 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 139 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 73, positive: 49, positive conditional: 49, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 73, positive: 49, positive conditional: 11, positive unconditional: 38, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 49, positive conditional: 11, positive unconditional: 38, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 4, positive unconditional: 2, 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: 73, positive: 43, positive conditional: 7, positive unconditional: 36, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 6, unknown conditional: 4, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 179, Positive conditional cache size: 4, Positive unconditional cache size: 175, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 138.3ms, 34 PlacesBefore, 31 PlacesAfterwards, 24 TransitionsBefore, 23 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 110 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 68, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 68, positive: 48, positive conditional: 2, positive unconditional: 46, negative: 20, negative conditional: 4, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 68, positive: 48, positive conditional: 2, positive unconditional: 46, negative: 20, negative conditional: 4, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 4, negative conditional: 3, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 3, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 25, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 20, negative conditional: 17, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 68, positive: 34, positive conditional: 2, positive unconditional: 32, negative: 16, negative conditional: 1, negative unconditional: 15, unknown: 18, unknown conditional: 3, unknown unconditional: 15] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 193, Positive conditional cache size: 4, Positive unconditional cache size: 189, Negative cache size: 37, Negative conditional cache size: 3, Negative unconditional cache size: 34, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.8ms, 31 PlacesBefore, 31 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 53 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 24, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 12, negative conditional: 2, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 12, negative conditional: 2, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 11, negative conditional: 1, negative unconditional: 10, unknown: 2, unknown conditional: 1, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 232, Positive cache size: 194, Positive conditional cache size: 4, Positive unconditional cache size: 190, Negative cache size: 38, Negative conditional cache size: 4, Negative unconditional cache size: 34, Eliminated conditions: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 116.4ms, 36 PlacesBefore, 33 PlacesAfterwards, 24 TransitionsBefore, 21 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 17, positive: 10, positive conditional: 4, positive unconditional: 6, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 10, positive conditional: 4, positive unconditional: 6, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.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.Independence Queries: [ total: 5, positive: 3, positive conditional: 2, positive unconditional: 1, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20, positive: 11, positive conditional: 7, positive unconditional: 3, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 17, positive: 7, positive conditional: 2, positive unconditional: 5, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 5, unknown conditional: 4, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 237, Positive cache size: 197, Positive conditional cache size: 6, Positive unconditional cache size: 191, Negative cache size: 40, Negative conditional cache size: 6, Negative unconditional cache size: 34, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.4ms, 33 PlacesBefore, 28 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 11, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 239, Positive cache size: 197, Positive conditional cache size: 6, Positive unconditional cache size: 191, Negative cache size: 42, Negative conditional cache size: 8, Negative unconditional cache size: 34, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.0ms, 27 PlacesBefore, 26 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 239, Positive cache size: 197, Positive conditional cache size: 6, Positive unconditional cache size: 191, Negative cache size: 42, Negative conditional cache size: 8, Negative unconditional cache size: 34, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8ms, 27 PlacesBefore, 24 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 239, Positive cache size: 197, Positive conditional cache size: 6, Positive unconditional cache size: 191, Negative cache size: 42, Negative conditional cache size: 8, Negative unconditional cache size: 34, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8ms, 17 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 239, Positive cache size: 197, Positive conditional cache size: 6, Positive unconditional cache size: 191, Negative cache size: 42, Negative conditional cache size: 8, Negative unconditional cache size: 34, Eliminated conditions: 0 - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2479.3ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 573.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 421.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 44 SDslu, 8 SDs, 0 SdLazy, 295 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 185.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 287.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=5, InterpolantAutomatonStates: 50, 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: 10.6ms SsaConstructionTime, 94.7ms SatisfiabilityAnalysisTime, 529.1ms InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...