/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 05:36:12,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 05:36:12,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 05:36:12,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 05:36:12,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 05:36:12,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 05:36:12,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 05:36:12,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 05:36:12,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 05:36:12,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 05:36:12,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 05:36:12,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 05:36:12,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 05:36:12,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 05:36:12,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 05:36:12,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 05:36:12,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 05:36:12,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 05:36:12,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 05:36:12,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 05:36:12,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 05:36:12,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 05:36:12,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 05:36:12,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 05:36:12,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 05:36:12,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 05:36:12,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 05:36:12,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 05:36:12,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 05:36:12,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 05:36:12,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 05:36:12,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 05:36:12,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 05:36:12,510 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 05:36:12,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 05:36:12,511 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 05:36:12,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 05:36:12,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 05:36:12,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 05:36:12,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 05:36:12,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 05:36:12,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 05:36:12,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 05:36:12,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 05:36:12,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 05:36:12,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 05:36:12,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 05:36:12,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 05:36:12,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 05:36:12,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 05:36:12,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 05:36:12,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 05:36:12,749 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 05:36:12,750 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 05:36:12,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl [2021-03-26 05:36:12,751 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl' [2021-03-26 05:36:12,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 05:36:12,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 05:36:12,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 05:36:12,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 05:36:12,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 05:36:12,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 05:36:12,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 05:36:12,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 05:36:12,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 05:36:12,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/1) ... [2021-03-26 05:36:12,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 05:36:12,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 05:36:12,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 05:36:12,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 05:36:12,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (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 05:36:12,849 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-26 05:36:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 05:36:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 05:36:12,849 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-26 05:36:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-26 05:36:12,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-26 05:36:12,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 05:36:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 05:36:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 05:36:12,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-26 05:36:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-26 05:36:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-26 05:36:12,850 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 05:36:12,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 05:36:12,980 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 05:36:12,981 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:36:12 BoogieIcfgContainer [2021-03-26 05:36:12,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 05:36:12,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 05:36:12,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 05:36:12,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 05:36:12,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 05:36:12" (1/2) ... [2021-03-26 05:36:12,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bf0f0a and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 05:36:12, skipping insertion in model container [2021-03-26 05:36:12,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 05:36:12" (2/2) ... [2021-03-26 05:36:12,986 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl [2021-03-26 05:36:12,989 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 05:36:12,991 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 05:36:13,008 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 05:36:13,042 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-26 05:36:13,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 05:36:13,083 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 05:36:13,083 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 05:36:13,083 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 05:36:13,083 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 05:36:13,083 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 05:36:13,083 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 05:36:13,083 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 05:36:13,083 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 05:36:13,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 84 flow [2021-03-26 05:36:13,134 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-26 05:36:13,134 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:36:13,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 0/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 05:36:13,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 30 transitions, 84 flow [2021-03-26 05:36:13,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2021-03-26 05:36:13,142 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:13,152 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 25 transitions, 68 flow [2021-03-26 05:36:13,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 25 transitions, 68 flow [2021-03-26 05:36:13,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 68 flow [2021-03-26 05:36:13,174 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-26 05:36:13,174 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:36:13,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 0/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 05:36:13,176 INFO L142 LiptonReduction]: Number of co-enabled transitions 234 [2021-03-26 05:36:13,673 INFO L154 LiptonReduction]: Checked pairs total: 375 [2021-03-26 05:36:13,673 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-26 05:36:13,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 534 [2021-03-26 05:36:13,694 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 05:36:13,694 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 05:36:13,694 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:13,695 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:13,695 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:13,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:13,703 INFO L82 PathProgramCache]: Analyzing trace with hash 576604323, now seen corresponding path program 1 times [2021-03-26 05:36:13,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:13,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196967224] [2021-03-26 05:36:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:13,803 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-26 05:36:13,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-26 05:36:13,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:13,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:13,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:13,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:13,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-26 05:36:13,822 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 05:36:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196967224] [2021-03-26 05:36:13,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:13,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 05:36:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108763112] [2021-03-26 05:36:13,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:13,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:13,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:13,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:13,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 39 [2021-03-26 05:36:13,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:13,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:13,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 39 [2021-03-26 05:36:13,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:13,876 INFO L129 PetriNetUnfolder]: 43/113 cut-off events. [2021-03-26 05:36:13,876 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-26 05:36:13,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 113 events. 43/113 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 12 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 206. Up to 54 conditions per place. [2021-03-26 05:36:13,879 INFO L132 encePairwiseOnDemand]: 30/39 looper letters, 13 selfloop transitions, 7 changer transitions 1/28 dead transitions. [2021-03-26 05:36:13,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 116 flow [2021-03-26 05:36:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2021-03-26 05:36:13,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-26 05:36:13,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2021-03-26 05:36:13,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2021-03-26 05:36:13,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:13,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2021-03-26 05:36:13,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 05:36:13,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 05:36:13,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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 05:36:13,894 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 132 transitions. [2021-03-26 05:36:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 116 flow [2021-03-26 05:36:13,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-26 05:36:13,897 INFO L241 Difference]: Finished difference. Result has 27 places, 21 transitions, 87 flow [2021-03-26 05:36:13,898 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2021-03-26 05:36:13,899 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-03-26 05:36:13,899 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:13,899 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 21 transitions, 87 flow [2021-03-26 05:36:13,899 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 21 transitions, 87 flow [2021-03-26 05:36:13,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 21 transitions, 87 flow [2021-03-26 05:36:13,905 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2021-03-26 05:36:13,905 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 05:36:13,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 55 events. 12/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 5 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 95. Up to 24 conditions per place. [2021-03-26 05:36:13,906 INFO L142 LiptonReduction]: Number of co-enabled transitions 68 [2021-03-26 05:36:13,977 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-26 05:36:13,977 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:36:13,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-26 05:36:13,978 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 87 flow [2021-03-26 05:36:13,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:13,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:13,979 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:13,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 05:36:13,979 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:13,979 INFO L82 PathProgramCache]: Analyzing trace with hash 572180383, now seen corresponding path program 2 times [2021-03-26 05:36:13,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:13,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492319779] [2021-03-26 05:36:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:13,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:13,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:13,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:13,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,005 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 05:36:14,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492319779] [2021-03-26 05:36:14,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:14,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665620709] [2021-03-26 05:36:14,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:14,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:14,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:14,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2021-03-26 05:36:14,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 05:36:14,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2021-03-26 05:36:14,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,075 INFO L129 PetriNetUnfolder]: 49/119 cut-off events. [2021-03-26 05:36:14,075 INFO L130 PetriNetUnfolder]: For 74/80 co-relation queries the response was YES. [2021-03-26 05:36:14,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 119 events. 49/119 cut-off events. For 74/80 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 438 event pairs, 7 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 324. Up to 62 conditions per place. [2021-03-26 05:36:14,076 INFO L132 encePairwiseOnDemand]: 33/40 looper letters, 18 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2021-03-26 05:36:14,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 208 flow [2021-03-26 05:36:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2021-03-26 05:36:14,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.64 [2021-03-26 05:36:14,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 128 transitions. [2021-03-26 05:36:14,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 128 transitions. [2021-03-26 05:36:14,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 128 transitions. [2021-03-26 05:36:14,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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 05:36:14,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 05:36:14,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 05:36:14,085 INFO L185 Difference]: Start difference. First operand has 27 places, 21 transitions, 87 flow. Second operand 5 states and 128 transitions. [2021-03-26 05:36:14,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 208 flow [2021-03-26 05:36:14,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 188 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-26 05:36:14,087 INFO L241 Difference]: Finished difference. Result has 30 places, 28 transitions, 149 flow [2021-03-26 05:36:14,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2021-03-26 05:36:14,088 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2021-03-26 05:36:14,088 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 28 transitions, 149 flow [2021-03-26 05:36:14,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 28 transitions, 149 flow [2021-03-26 05:36:14,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 149 flow [2021-03-26 05:36:14,098 INFO L129 PetriNetUnfolder]: 18/63 cut-off events. [2021-03-26 05:36:14,099 INFO L130 PetriNetUnfolder]: For 41/56 co-relation queries the response was YES. [2021-03-26 05:36:14,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 63 events. 18/63 cut-off events. For 41/56 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 206 event pairs, 3 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 149. Up to 26 conditions per place. [2021-03-26 05:36:14,100 INFO L142 LiptonReduction]: Number of co-enabled transitions 72 [2021-03-26 05:36:14,286 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-26 05:36:14,286 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 05:36:14,286 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 198 [2021-03-26 05:36:14,287 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 147 flow [2021-03-26 05:36:14,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 05:36:14,287 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,287 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 05:36:14,288 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1234370936, now seen corresponding path program 1 times [2021-03-26 05:36:14,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919864568] [2021-03-26 05:36:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:14,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:14,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,336 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 05:36:14,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919864568] [2021-03-26 05:36:14,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:14,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699135488] [2021-03-26 05:36:14,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:14,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:14,338 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2021-03-26 05:36:14,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 05:36:14,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2021-03-26 05:36:14,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,396 INFO L129 PetriNetUnfolder]: 31/90 cut-off events. [2021-03-26 05:36:14,396 INFO L130 PetriNetUnfolder]: For 108/110 co-relation queries the response was YES. [2021-03-26 05:36:14,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 90 events. 31/90 cut-off events. For 108/110 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 305 event pairs, 4 based on Foata normal form. 9/99 useless extension candidates. Maximal degree in co-relation 289. Up to 48 conditions per place. [2021-03-26 05:36:14,397 INFO L132 encePairwiseOnDemand]: 35/43 looper letters, 14 selfloop transitions, 12 changer transitions 2/35 dead transitions. [2021-03-26 05:36:14,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 245 flow [2021-03-26 05:36:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2021-03-26 05:36:14,400 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5906976744186047 [2021-03-26 05:36:14,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 127 transitions. [2021-03-26 05:36:14,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 127 transitions. [2021-03-26 05:36:14,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 127 transitions. [2021-03-26 05:36:14,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,402 INFO L185 Difference]: Start difference. First operand has 29 places, 27 transitions, 147 flow. Second operand 5 states and 127 transitions. [2021-03-26 05:36:14,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 245 flow [2021-03-26 05:36:14,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 05:36:14,406 INFO L241 Difference]: Finished difference. Result has 33 places, 29 transitions, 190 flow [2021-03-26 05:36:14,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2021-03-26 05:36:14,406 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2021-03-26 05:36:14,406 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 29 transitions, 190 flow [2021-03-26 05:36:14,408 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 29 transitions, 190 flow [2021-03-26 05:36:14,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 190 flow [2021-03-26 05:36:14,414 INFO L129 PetriNetUnfolder]: 15/59 cut-off events. [2021-03-26 05:36:14,414 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2021-03-26 05:36:14,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 59 events. 15/59 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 194 event pairs, 4 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 163. Up to 24 conditions per place. [2021-03-26 05:36:14,416 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 05:36:14,422 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:14,422 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:14,422 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 05:36:14,425 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 190 flow [2021-03-26 05:36:14,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 05:36:14,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,426 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 05:36:14,426 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,426 INFO L82 PathProgramCache]: Analyzing trace with hash -331204225, now seen corresponding path program 1 times [2021-03-26 05:36:14,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326050580] [2021-03-26 05:36:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:14,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:14,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,467 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 05:36:14,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326050580] [2021-03-26 05:36:14,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:14,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959696684] [2021-03-26 05:36:14,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:14,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:14,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:14,474 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2021-03-26 05:36:14,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 05:36:14,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2021-03-26 05:36:14,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,515 INFO L129 PetriNetUnfolder]: 16/49 cut-off events. [2021-03-26 05:36:14,515 INFO L130 PetriNetUnfolder]: For 80/84 co-relation queries the response was YES. [2021-03-26 05:36:14,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 49 events. 16/49 cut-off events. For 80/84 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 111 event pairs, 0 based on Foata normal form. 8/57 useless extension candidates. Maximal degree in co-relation 180. Up to 32 conditions per place. [2021-03-26 05:36:14,515 INFO L132 encePairwiseOnDemand]: 35/43 looper letters, 11 selfloop transitions, 12 changer transitions 2/32 dead transitions. [2021-03-26 05:36:14,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 259 flow [2021-03-26 05:36:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2021-03-26 05:36:14,516 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5720930232558139 [2021-03-26 05:36:14,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2021-03-26 05:36:14,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2021-03-26 05:36:14,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2021-03-26 05:36:14,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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 05:36:14,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,517 INFO L185 Difference]: Start difference. First operand has 33 places, 29 transitions, 190 flow. Second operand 5 states and 123 transitions. [2021-03-26 05:36:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 259 flow [2021-03-26 05:36:14,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 211 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-26 05:36:14,519 INFO L241 Difference]: Finished difference. Result has 34 places, 28 transitions, 174 flow [2021-03-26 05:36:14,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2021-03-26 05:36:14,519 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2021-03-26 05:36:14,519 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,519 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 28 transitions, 174 flow [2021-03-26 05:36:14,520 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 28 transitions, 174 flow [2021-03-26 05:36:14,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 28 transitions, 174 flow [2021-03-26 05:36:14,522 INFO L129 PetriNetUnfolder]: 11/40 cut-off events. [2021-03-26 05:36:14,522 INFO L130 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2021-03-26 05:36:14,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 40 events. 11/40 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 102 event pairs, 2 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 112. Up to 19 conditions per place. [2021-03-26 05:36:14,522 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 05:36:14,524 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:14,524 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:14,524 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 05:36:14,524 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 174 flow [2021-03-26 05:36:14,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 05:36:14,524 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,524 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 05:36:14,525 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 858019032, now seen corresponding path program 2 times [2021-03-26 05:36:14,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440776856] [2021-03-26 05:36:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:14,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:14,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,553 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 05:36:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440776856] [2021-03-26 05:36:14,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 05:36:14,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734798759] [2021-03-26 05:36:14,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 05:36:14,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 05:36:14,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-26 05:36:14,554 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2021-03-26 05:36:14,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:14,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2021-03-26 05:36:14,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,639 INFO L129 PetriNetUnfolder]: 11/62 cut-off events. [2021-03-26 05:36:14,639 INFO L130 PetriNetUnfolder]: For 116/120 co-relation queries the response was YES. [2021-03-26 05:36:14,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 62 events. 11/62 cut-off events. For 116/120 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 242 event pairs, 4 based on Foata normal form. 8/70 useless extension candidates. Maximal degree in co-relation 203. Up to 27 conditions per place. [2021-03-26 05:36:14,640 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 11 selfloop transitions, 17 changer transitions 8/43 dead transitions. [2021-03-26 05:36:14,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 336 flow [2021-03-26 05:36:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 05:36:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 05:36:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2021-03-26 05:36:14,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2021-03-26 05:36:14,641 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 192 transitions. [2021-03-26 05:36:14,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 192 transitions. [2021-03-26 05:36:14,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 192 transitions. [2021-03-26 05:36:14,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 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 05:36:14,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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 05:36:14,643 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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 05:36:14,643 INFO L185 Difference]: Start difference. First operand has 34 places, 28 transitions, 174 flow. Second operand 8 states and 192 transitions. [2021-03-26 05:36:14,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 336 flow [2021-03-26 05:36:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 05:36:14,645 INFO L241 Difference]: Finished difference. Result has 40 places, 33 transitions, 245 flow [2021-03-26 05:36:14,645 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=245, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2021-03-26 05:36:14,645 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-03-26 05:36:14,645 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,646 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 33 transitions, 245 flow [2021-03-26 05:36:14,646 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 33 transitions, 245 flow [2021-03-26 05:36:14,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 245 flow [2021-03-26 05:36:14,649 INFO L129 PetriNetUnfolder]: 7/46 cut-off events. [2021-03-26 05:36:14,649 INFO L130 PetriNetUnfolder]: For 118/122 co-relation queries the response was YES. [2021-03-26 05:36:14,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 46 events. 7/46 cut-off events. For 118/122 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 143 event pairs, 2 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 112. Up to 21 conditions per place. [2021-03-26 05:36:14,649 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 05:36:14,651 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:14,651 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:14,651 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 05:36:14,653 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 245 flow [2021-03-26 05:36:14,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:14,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 05:36:14,654 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,654 INFO L82 PathProgramCache]: Analyzing trace with hash 317537678, now seen corresponding path program 3 times [2021-03-26 05:36:14,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340540050] [2021-03-26 05:36:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:14,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:14,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,722 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 05:36:14,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340540050] [2021-03-26 05:36:14,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 05:36:14,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098257890] [2021-03-26 05:36:14,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 05:36:14,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 05:36:14,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-26 05:36:14,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2021-03-26 05:36:14,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:14,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2021-03-26 05:36:14,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,790 INFO L129 PetriNetUnfolder]: 9/50 cut-off events. [2021-03-26 05:36:14,790 INFO L130 PetriNetUnfolder]: For 178/185 co-relation queries the response was YES. [2021-03-26 05:36:14,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 50 events. 9/50 cut-off events. For 178/185 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 153 event pairs, 4 based on Foata normal form. 9/59 useless extension candidates. Maximal degree in co-relation 135. Up to 24 conditions per place. [2021-03-26 05:36:14,791 INFO L132 encePairwiseOnDemand]: 34/43 looper letters, 10 selfloop transitions, 12 changer transitions 6/35 dead transitions. [2021-03-26 05:36:14,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 329 flow [2021-03-26 05:36:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 05:36:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 05:36:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2021-03-26 05:36:14,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5465116279069767 [2021-03-26 05:36:14,792 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 188 transitions. [2021-03-26 05:36:14,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 188 transitions. [2021-03-26 05:36:14,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 188 transitions. [2021-03-26 05:36:14,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.5) internal successors, (188), 8 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:14,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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 05:36:14,793 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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 05:36:14,793 INFO L185 Difference]: Start difference. First operand has 38 places, 33 transitions, 245 flow. Second operand 8 states and 188 transitions. [2021-03-26 05:36:14,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 329 flow [2021-03-26 05:36:14,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 281 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-26 05:36:14,795 INFO L241 Difference]: Finished difference. Result has 40 places, 27 transitions, 192 flow [2021-03-26 05:36:14,795 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=192, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2021-03-26 05:36:14,795 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2021-03-26 05:36:14,795 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,795 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 27 transitions, 192 flow [2021-03-26 05:36:14,795 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 27 transitions, 192 flow [2021-03-26 05:36:14,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 192 flow [2021-03-26 05:36:14,798 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-03-26 05:36:14,798 INFO L130 PetriNetUnfolder]: For 54/56 co-relation queries the response was YES. [2021-03-26 05:36:14,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 37 events. 5/37 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 84 event pairs, 2 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 87. Up to 18 conditions per place. [2021-03-26 05:36:14,798 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 05:36:14,861 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 05:36:14,861 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:36:14,861 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-26 05:36:14,864 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 184 flow [2021-03-26 05:36:14,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:14,864 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,864 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 05:36:14,864 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash 550160022, now seen corresponding path program 4 times [2021-03-26 05:36:14,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984982784] [2021-03-26 05:36:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:14,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:14,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 05:36:14,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:14,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:14,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:14,903 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 05:36:14,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984982784] [2021-03-26 05:36:14,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:14,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 05:36:14,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980523013] [2021-03-26 05:36:14,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 05:36:14,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:14,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 05:36:14,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 05:36:14,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2021-03-26 05:36:14,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 05:36:14,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:14,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2021-03-26 05:36:14,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:14,945 INFO L129 PetriNetUnfolder]: 6/41 cut-off events. [2021-03-26 05:36:14,945 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-03-26 05:36:14,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 41 events. 6/41 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 102 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 100. Up to 20 conditions per place. [2021-03-26 05:36:14,945 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 7 selfloop transitions, 16 changer transitions 2/32 dead transitions. [2021-03-26 05:36:14,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 274 flow [2021-03-26 05:36:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 05:36:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 05:36:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2021-03-26 05:36:14,946 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2021-03-26 05:36:14,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 142 transitions. [2021-03-26 05:36:14,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 142 transitions. [2021-03-26 05:36:14,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:14,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 142 transitions. [2021-03-26 05:36:14,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 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 05:36:14,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 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 05:36:14,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 44.0) internal successors, (308), 7 states have internal predecessors, (308), 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 05:36:14,947 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 184 flow. Second operand 6 states and 142 transitions. [2021-03-26 05:36:14,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 274 flow [2021-03-26 05:36:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 244 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-26 05:36:14,949 INFO L241 Difference]: Finished difference. Result has 36 places, 29 transitions, 224 flow [2021-03-26 05:36:14,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2021-03-26 05:36:14,949 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-26 05:36:14,949 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:14,949 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 29 transitions, 224 flow [2021-03-26 05:36:14,950 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 29 transitions, 224 flow [2021-03-26 05:36:14,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 224 flow [2021-03-26 05:36:14,952 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-26 05:36:14,952 INFO L130 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2021-03-26 05:36:14,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 37 events. 4/37 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 84. Up to 17 conditions per place. [2021-03-26 05:36:14,952 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-26 05:36:14,974 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 05:36:14,975 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:36:14,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-26 05:36:14,976 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 228 flow [2021-03-26 05:36:14,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 05:36:14,976 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:14,976 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:14,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 05:36:14,976 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1832509410, now seen corresponding path program 1 times [2021-03-26 05:36:14,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:14,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670355032] [2021-03-26 05:36:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:15,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:15,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:15,010 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 05:36:15,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670355032] [2021-03-26 05:36:15,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:15,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:15,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016738642] [2021-03-26 05:36:15,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:15,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:15,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:15,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2021-03-26 05:36:15,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 05:36:15,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:15,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2021-03-26 05:36:15,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:15,037 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-03-26 05:36:15,037 INFO L130 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2021-03-26 05:36:15,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 35 events. 4/35 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 46. Up to 19 conditions per place. [2021-03-26 05:36:15,038 INFO L132 encePairwiseOnDemand]: 37/45 looper letters, 12 selfloop transitions, 8 changer transitions 1/28 dead transitions. [2021-03-26 05:36:15,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 257 flow [2021-03-26 05:36:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2021-03-26 05:36:15,038 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5288888888888889 [2021-03-26 05:36:15,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2021-03-26 05:36:15,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2021-03-26 05:36:15,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:15,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2021-03-26 05:36:15,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:15,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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 05:36:15,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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 05:36:15,039 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 228 flow. Second operand 5 states and 119 transitions. [2021-03-26 05:36:15,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 257 flow [2021-03-26 05:36:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 231 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-26 05:36:15,041 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 189 flow [2021-03-26 05:36:15,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-26 05:36:15,041 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-26 05:36:15,041 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:15,041 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 189 flow [2021-03-26 05:36:15,041 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 189 flow [2021-03-26 05:36:15,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 189 flow [2021-03-26 05:36:15,043 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-26 05:36:15,043 INFO L130 PetriNetUnfolder]: For 56/57 co-relation queries the response was YES. [2021-03-26 05:36:15,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 32 events. 3/32 cut-off events. For 56/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 61 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 78. Up to 16 conditions per place. [2021-03-26 05:36:15,044 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-26 05:36:15,065 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 05:36:15,065 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:36:15,065 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-26 05:36:15,065 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 193 flow [2021-03-26 05:36:15,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 05:36:15,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:15,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:15,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 05:36:15,066 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:15,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1707136711, now seen corresponding path program 1 times [2021-03-26 05:36:15,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:15,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477560030] [2021-03-26 05:36:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:15,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:15,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 05:36:15,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:15,083 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 05:36:15,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477560030] [2021-03-26 05:36:15,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:15,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 05:36:15,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425250203] [2021-03-26 05:36:15,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 05:36:15,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:15,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 05:36:15,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-26 05:36:15,084 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2021-03-26 05:36:15,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 05:36:15,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:15,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2021-03-26 05:36:15,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:15,105 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-03-26 05:36:15,105 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-03-26 05:36:15,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 26 events. 1/26 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 48. Up to 14 conditions per place. [2021-03-26 05:36:15,105 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 5 selfloop transitions, 8 changer transitions 4/24 dead transitions. [2021-03-26 05:36:15,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 209 flow [2021-03-26 05:36:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 05:36:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 05:36:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2021-03-26 05:36:15,106 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2021-03-26 05:36:15,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2021-03-26 05:36:15,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2021-03-26 05:36:15,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:15,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2021-03-26 05:36:15,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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 05:36:15,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:15,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:15,107 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 193 flow. Second operand 5 states and 116 transitions. [2021-03-26 05:36:15,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 209 flow [2021-03-26 05:36:15,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 189 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-26 05:36:15,108 INFO L241 Difference]: Finished difference. Result has 35 places, 20 transitions, 137 flow [2021-03-26 05:36:15,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2021-03-26 05:36:15,108 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2021-03-26 05:36:15,108 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:15,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 20 transitions, 137 flow [2021-03-26 05:36:15,109 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 20 transitions, 137 flow [2021-03-26 05:36:15,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 20 transitions, 137 flow [2021-03-26 05:36:15,110 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-26 05:36:15,110 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 05:36:15,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 20 events. 1/20 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 33. Up to 9 conditions per place. [2021-03-26 05:36:15,110 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 05:36:15,183 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:15,183 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 05:36:15,183 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-03-26 05:36:15,184 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 137 flow [2021-03-26 05:36:15,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 05:36:15,184 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:15,184 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:15,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 05:36:15,184 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash -427061840, now seen corresponding path program 1 times [2021-03-26 05:36:15,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:15,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473235581] [2021-03-26 05:36:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:15,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 05:36:15,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:15,213 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 05:36:15,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473235581] [2021-03-26 05:36:15,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:15,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 05:36:15,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746216075] [2021-03-26 05:36:15,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 05:36:15,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:15,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 05:36:15,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-26 05:36:15,214 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2021-03-26 05:36:15,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:15,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:15,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2021-03-26 05:36:15,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:15,241 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 05:36:15,241 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2021-03-26 05:36:15,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 18 events. 0/18 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-03-26 05:36:15,241 INFO L132 encePairwiseOnDemand]: 41/47 looper letters, 3 selfloop transitions, 5 changer transitions 3/18 dead transitions. [2021-03-26 05:36:15,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 18 transitions, 137 flow [2021-03-26 05:36:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 05:36:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 05:36:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2021-03-26 05:36:15,242 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2021-03-26 05:36:15,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 131 transitions. [2021-03-26 05:36:15,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 131 transitions. [2021-03-26 05:36:15,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:15,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 131 transitions. [2021-03-26 05:36:15,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 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 05:36:15,243 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 05:36:15,244 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 05:36:15,244 INFO L185 Difference]: Start difference. First operand has 35 places, 20 transitions, 137 flow. Second operand 6 states and 131 transitions. [2021-03-26 05:36:15,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 18 transitions, 137 flow [2021-03-26 05:36:15,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 18 transitions, 110 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-03-26 05:36:15,245 INFO L241 Difference]: Finished difference. Result has 32 places, 15 transitions, 76 flow [2021-03-26 05:36:15,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2021-03-26 05:36:15,245 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2021-03-26 05:36:15,245 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:15,245 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 15 transitions, 76 flow [2021-03-26 05:36:15,245 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 15 transitions, 76 flow [2021-03-26 05:36:15,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 15 transitions, 76 flow [2021-03-26 05:36:15,246 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-26 05:36:15,247 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-03-26 05:36:15,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 15 events. 0/15 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 05:36:15,247 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 05:36:15,247 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:15,247 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:15,247 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-26 05:36:15,248 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 76 flow [2021-03-26 05:36:15,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 05:36:15,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 05:36:15,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 05:36:15,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 05:36:15,248 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 05:36:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 05:36:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 957796983, now seen corresponding path program 1 times [2021-03-26 05:36:15,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 05:36:15,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798252511] [2021-03-26 05:36:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 05:36:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 05:36:15,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 05:36:15,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 05:36:15,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 05:36:15,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 05:36:15,278 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 05:36:15,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798252511] [2021-03-26 05:36:15,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 05:36:15,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 05:36:15,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653382214] [2021-03-26 05:36:15,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 05:36:15,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 05:36:15,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 05:36:15,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-26 05:36:15,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2021-03-26 05:36:15,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:15,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 05:36:15,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2021-03-26 05:36:15,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 05:36:15,305 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-26 05:36:15,305 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-26 05:36:15,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 9 events. 0/9 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 05:36:15,306 INFO L132 encePairwiseOnDemand]: 41/47 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-26 05:36:15,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 9 transitions, 63 flow [2021-03-26 05:36:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 05:36:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 05:36:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2021-03-26 05:36:15,307 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.44680851063829785 [2021-03-26 05:36:15,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 147 transitions. [2021-03-26 05:36:15,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 147 transitions. [2021-03-26 05:36:15,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 05:36:15,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 147 transitions. [2021-03-26 05:36:15,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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 05:36:15,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 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 05:36:15,308 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 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 05:36:15,308 INFO L185 Difference]: Start difference. First operand has 32 places, 15 transitions, 76 flow. Second operand 7 states and 147 transitions. [2021-03-26 05:36:15,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 9 transitions, 63 flow [2021-03-26 05:36:15,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 9 transitions, 43 flow, removed 0 selfloop flow, removed 11 redundant places. [2021-03-26 05:36:15,308 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-26 05:36:15,308 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-26 05:36:15,308 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2021-03-26 05:36:15,309 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 05:36:15,309 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 05:36:15,309 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 0 transitions, 0 flow [2021-03-26 05:36:15,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 05:36:15,309 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 05:36:15,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 05:36:15,309 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 05:36:15,309 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 05:36:15,309 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 05:36:15,309 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 05:36:15,309 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 0 [2021-03-26 05:36:15,310 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 05:36:15,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 states have internal predecessors, (148), 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 05:36:15,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 05:36:15,313 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 05:36:15 BasicIcfg [2021-03-26 05:36:15,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 05:36:15,313 INFO L168 Benchmark]: Toolchain (without parser) took 2541.67 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 236.5 MB in the beginning and 417.8 MB in the end (delta: -181.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:15,313 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:36:15,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 235.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:15,313 INFO L168 Benchmark]: Boogie Preprocessor took 9.72 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.1 MB in the end (delta: 775.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 05:36:15,314 INFO L168 Benchmark]: RCFGBuilder took 178.41 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 237.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:15,314 INFO L168 Benchmark]: TraceAbstraction took 2330.27 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 236.7 MB in the beginning and 417.8 MB in the end (delta: -181.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.0 GB. [2021-03-26 05:36:15,314 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 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.85 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 235.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.72 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 234.1 MB in the end (delta: 775.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 178.41 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 237.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2330.27 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 236.7 MB in the beginning and 417.8 MB in the end (delta: -181.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 516.1ms, 35 PlacesBefore, 26 PlacesAfterwards, 25 TransitionsBefore, 16 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 375 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 186, positive: 158, positive conditional: 158, positive unconditional: 0, negative: 28, negative conditional: 28, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 151, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 151, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 151, positive: 116, positive conditional: 0, positive unconditional: 116, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 167, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 186, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 151, unknown conditional: 151, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 10, Positive conditional cache size: 10, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 78.2ms, 27 PlacesBefore, 27 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 68 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 2, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 2, positive unconditional: 6, 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: 8, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 1, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 15, positive: 15, positive conditional: 4, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 18, Positive conditional cache size: 18, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 197.0ms, 30 PlacesBefore, 29 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 72 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 3, positive unconditional: 1, 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: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 20, positive conditional: 20, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.7ms, 33 PlacesBefore, 33 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1ms, 34 PlacesBefore, 34 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1ms, 40 PlacesBefore, 38 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 7, Positive conditional cache size: 7, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 65.6ms, 40 PlacesBefore, 35 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 3, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.7ms, 36 PlacesBefore, 35 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.2ms, 36 PlacesBefore, 36 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 2, positive conditional: 2, 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): 5, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 74.5ms, 35 PlacesBefore, 35 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2ms, 32 PlacesBefore, 32 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 22 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 5, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 65]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2234.4ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 586.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 602.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 20 SDslu, 5 SDs, 0 SdLazy, 544 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 239.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 182.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=5, InterpolantAutomatonStates: 65, 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: 12.1ms SsaConstructionTime, 130.2ms SatisfiabilityAnalysisTime, 277.1ms InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...