/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 19:55:03,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 19:55:03,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 19:55:03,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 19:55:03,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 19:55:03,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 19:55:03,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 19:55:03,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 19:55:03,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 19:55:03,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 19:55:03,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 19:55:03,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 19:55:03,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 19:55:03,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 19:55:03,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 19:55:03,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 19:55:03,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 19:55:03,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 19:55:03,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 19:55:03,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 19:55:03,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 19:55:03,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 19:55:03,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 19:55:03,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 19:55:03,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 19:55:03,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 19:55:03,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 19:55:03,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 19:55:03,478 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-RepeatedSemanticLbe.epf [2021-03-25 19:55:03,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 19:55:03,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 19:55:03,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 19:55:03,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 19:55:03,516 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 19:55:03,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 19:55:03,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 19:55:03,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 19:55:03,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 19:55:03,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 19:55:03,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 19:55:03,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 19:55:03,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 19:55:03,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 19:55:03,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 19:55:03,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 19:55:03,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 19:55:03,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 19:55:03,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 19:55:03,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 19:55:03,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 19:55:03,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 19:55:03,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 19:55:03,825 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 19:55:03,826 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 19:55:03,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl [2021-03-25 19:55:03,827 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/counter-determinism.wvr.bpl' [2021-03-25 19:55:03,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 19:55:03,873 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 19:55:03,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 19:55:03,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 19:55:03,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 19:55:03,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 19:55:03,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 19:55:03,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 19:55:03,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 19:55:03,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/1) ... [2021-03-25 19:55:03,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 19:55:03,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 19:55:03,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 19:55:03,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 19:55:03,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (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 [2021-03-25 19:55:03,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 19:55:03,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 19:55:03,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 19:55:03,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 19:55:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 19:55:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 19:55:03,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 19:55:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 19:55:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 19:55:03,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 19:55:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 19:55:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 19:55:03,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-25 19:55:03,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-25 19:55:03,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-25 19:55:03,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 19:55:04,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 19:55:04,208 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 19:55:04,209 INFO L202 PluginConnector]: Adding new model counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:55:04 BoogieIcfgContainer [2021-03-25 19:55:04,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 19:55:04,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 19:55:04,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 19:55:04,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 19:55:04,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 07:55:03" (1/2) ... [2021-03-25 19:55:04,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c91af6 and model type counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:55:04, skipping insertion in model container [2021-03-25 19:55:04,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-determinism.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:55:04" (2/2) ... [2021-03-25 19:55:04,231 INFO L111 eAbstractionObserver]: Analyzing ICFG counter-determinism.wvr.bpl [2021-03-25 19:55:04,236 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 19:55:04,239 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 19:55:04,240 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 19:55:04,337 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 19:55:04,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 19:55:04,390 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 19:55:04,390 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 19:55:04,391 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 19:55:04,391 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 19:55:04,391 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 19:55:04,391 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 19:55:04,391 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 19:55:04,391 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 19:55:04,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 110 flow [2021-03-25 19:55:04,448 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-03-25 19:55:04,448 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 19:55:04,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-03-25 19:55:04,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 110 flow [2021-03-25 19:55:04,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 33 transitions, 90 flow [2021-03-25 19:55:04,457 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:04,475 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 33 transitions, 90 flow [2021-03-25 19:55:04,478 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 33 transitions, 90 flow [2021-03-25 19:55:04,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 90 flow [2021-03-25 19:55:04,499 INFO L129 PetriNetUnfolder]: 4/33 cut-off events. [2021-03-25 19:55:04,499 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 19:55:04,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 33 events. 4/33 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-03-25 19:55:04,504 INFO L142 LiptonReduction]: Number of co-enabled transitions 288 [2021-03-25 19:55:04,903 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-25 19:55:04,903 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-25 19:55:04,905 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 449 [2021-03-25 19:55:04,915 INFO L129 PetriNetUnfolder]: 4/17 cut-off events. [2021-03-25 19:55:04,916 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 19:55:04,916 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:04,917 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:04,917 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:04,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:04,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1678072251, now seen corresponding path program 1 times [2021-03-25 19:55:04,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:04,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103142430] [2021-03-25 19:55:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:05,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:55:05,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:05,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103142430] [2021-03-25 19:55:05,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:05,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 19:55:05,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83457105] [2021-03-25 19:55:05,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 19:55:05,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:05,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 19:55:05,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 19:55:05,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 54 [2021-03-25 19:55:05,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-03-25 19:55:05,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:05,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 54 [2021-03-25 19:55:05,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:05,142 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][16], [17#L22-1true, thread4Thread1of1ForFork3InUse, thread3Thread1of1ForFork2InUse, 52#true, 38#L45-1true, 23#L56-1true, 39#L77true, 10#L33-1true, thread2Thread1of1ForFork1InUse, thread1Thread1of1ForFork0InUse]) [2021-03-25 19:55:05,143 INFO L384 tUnfolder$Statistics]: this new event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,143 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,143 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,144 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,155 INFO L129 PetriNetUnfolder]: 19/45 cut-off events. [2021-03-25 19:55:05,156 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-25 19:55:05,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 45 events. 19/45 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 64. Up to 22 conditions per place. [2021-03-25 19:55:05,158 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 5 selfloop transitions, 5 changer transitions 0/22 dead transitions. [2021-03-25 19:55:05,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 88 flow [2021-03-25 19:55:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 19:55:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 19:55:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2021-03-25 19:55:05,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2021-03-25 19:55:05,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2021-03-25 19:55:05,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2021-03-25 19:55:05,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:05,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2021-03-25 19:55:05,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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) [2021-03-25 19:55:05,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,187 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 60 flow. Second operand 3 states and 119 transitions. [2021-03-25 19:55:05,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 88 flow [2021-03-25 19:55:05,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 72 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-25 19:55:05,193 INFO L241 Difference]: Finished difference. Result has 22 places, 22 transitions, 77 flow [2021-03-25 19:55:05,195 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=22, PETRI_TRANSITIONS=22} [2021-03-25 19:55:05,196 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2021-03-25 19:55:05,196 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:05,196 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 22 transitions, 77 flow [2021-03-25 19:55:05,197 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 22 transitions, 77 flow [2021-03-25 19:55:05,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 22 transitions, 77 flow [2021-03-25 19:55:05,205 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][8], [17#L22-1true, 52#true, 38#L45-1true, 23#L56-1true, 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 10#L33-1true]) [2021-03-25 19:55:05,205 INFO L384 tUnfolder$Statistics]: this new event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,205 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,205 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,205 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-25 19:55:05,211 INFO L129 PetriNetUnfolder]: 19/45 cut-off events. [2021-03-25 19:55:05,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 19:55:05,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 45 events. 19/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 52. Up to 22 conditions per place. [2021-03-25 19:55:05,212 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 19:55:05,215 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:05,215 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:05,215 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-25 19:55:05,218 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 22 transitions, 77 flow [2021-03-25 19:55:05,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-03-25 19:55:05,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:05,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:05,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 19:55:05,219 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:05,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1785764904, now seen corresponding path program 1 times [2021-03-25 19:55:05,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:05,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324635274] [2021-03-25 19:55:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:05,259 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:05,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,269 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:05,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,281 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:05,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:05,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324635274] [2021-03-25 19:55:05,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:05,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:05,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309316469] [2021-03-25 19:55:05,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:05,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:05,287 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2021-03-25 19:55:05,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 22 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:05,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2021-03-25 19:55:05,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:05,381 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][35], [52#true, 38#L45-1true, 39#L77true, 23#L56-1true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,382 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,382 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,382 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,382 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,383 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([133] L56-1-->thread4EXIT: Formula: (not (< v_j2_16 v_N2_14)) InVars {j2=v_j2_16, N2=v_N2_14} OutVars{j2=v_j2_16, N2=v_N2_14} AuxVars[] AssignedVars[][30], [35#thread4EXITtrue, 52#true, 38#L45-1true, 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,383 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,383 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,383 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,383 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,404 INFO L129 PetriNetUnfolder]: 247/355 cut-off events. [2021-03-25 19:55:05,404 INFO L130 PetriNetUnfolder]: For 128/174 co-relation queries the response was YES. [2021-03-25 19:55:05,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 355 events. 247/355 cut-off events. For 128/174 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1211 event pairs, 39 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 810. Up to 155 conditions per place. [2021-03-25 19:55:05,408 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 26 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-03-25 19:55:05,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 40 transitions, 198 flow [2021-03-25 19:55:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2021-03-25 19:55:05,410 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2021-03-25 19:55:05,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:05,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:05,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:05,413 INFO L185 Difference]: Start difference. First operand has 22 places, 22 transitions, 77 flow. Second operand 4 states and 133 transitions. [2021-03-25 19:55:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 40 transitions, 198 flow [2021-03-25 19:55:05,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 40 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:05,415 INFO L241 Difference]: Finished difference. Result has 26 places, 26 transitions, 113 flow [2021-03-25 19:55:05,415 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2021-03-25 19:55:05,416 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2021-03-25 19:55:05,416 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:05,416 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 26 transitions, 113 flow [2021-03-25 19:55:05,417 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 26 transitions, 113 flow [2021-03-25 19:55:05,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 26 transitions, 113 flow [2021-03-25 19:55:05,427 INFO L129 PetriNetUnfolder]: 50/102 cut-off events. [2021-03-25 19:55:05,427 INFO L130 PetriNetUnfolder]: For 21/26 co-relation queries the response was YES. [2021-03-25 19:55:05,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 102 events. 50/102 cut-off events. For 21/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 304 event pairs, 2 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 172. Up to 50 conditions per place. [2021-03-25 19:55:05,436 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 19:55:05,439 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:05,439 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:05,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-25 19:55:05,440 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 113 flow [2021-03-25 19:55:05,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:05,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:05,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 19:55:05,441 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1679626828, now seen corresponding path program 2 times [2021-03-25 19:55:05,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:05,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396439483] [2021-03-25 19:55:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:05,472 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:05,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,479 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:05,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,486 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:05,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:05,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396439483] [2021-03-25 19:55:05,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:05,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:05,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958003663] [2021-03-25 19:55:05,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:05,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:05,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:05,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:05,490 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2021-03-25 19:55:05,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:05,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2021-03-25 19:55:05,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:05,585 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][29], [Black: 59#(and (<= i2 i1) (= N2 N1)), 38#L45-1true, 23#L56-1true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,585 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,585 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,585 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,585 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,590 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([133] L56-1-->thread4EXIT: Formula: (not (< v_j2_16 v_N2_14)) InVars {j2=v_j2_16, N2=v_N2_14} OutVars{j2=v_j2_16, N2=v_N2_14} AuxVars[] AssignedVars[][25], [Black: 59#(and (<= i2 i1) (= N2 N1)), 35#thread4EXITtrue, 38#L45-1true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,590 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is not cut-off event [2021-03-25 19:55:05,590 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is not cut-off event [2021-03-25 19:55:05,590 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is not cut-off event [2021-03-25 19:55:05,590 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is not cut-off event [2021-03-25 19:55:05,617 INFO L129 PetriNetUnfolder]: 292/447 cut-off events. [2021-03-25 19:55:05,617 INFO L130 PetriNetUnfolder]: For 344/389 co-relation queries the response was YES. [2021-03-25 19:55:05,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 447 events. 292/447 cut-off events. For 344/389 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1571 event pairs, 25 based on Foata normal form. 15/446 useless extension candidates. Maximal degree in co-relation 1156. Up to 198 conditions per place. [2021-03-25 19:55:05,621 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 35 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2021-03-25 19:55:05,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 50 transitions, 306 flow [2021-03-25 19:55:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2021-03-25 19:55:05,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2021-03-25 19:55:05,627 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:05,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2021-03-25 19:55:05,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:05,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:05,633 INFO L185 Difference]: Start difference. First operand has 26 places, 26 transitions, 113 flow. Second operand 4 states and 133 transitions. [2021-03-25 19:55:05,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 50 transitions, 306 flow [2021-03-25 19:55:05,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 50 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:05,638 INFO L241 Difference]: Finished difference. Result has 30 places, 31 transitions, 165 flow [2021-03-25 19:55:05,638 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2021-03-25 19:55:05,639 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-03-25 19:55:05,639 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:05,639 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 31 transitions, 165 flow [2021-03-25 19:55:05,640 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 31 transitions, 165 flow [2021-03-25 19:55:05,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 31 transitions, 165 flow [2021-03-25 19:55:05,647 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][15], [Black: 59#(and (<= i2 i1) (= N2 N1)), 38#L45-1true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), 39#L77true, 23#L56-1true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), Black: 68#(and (<= j2 i1) (= N2 N1)), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,648 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,648 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,649 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,649 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,652 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][15], [Black: 59#(and (<= i2 i1) (= N2 N1)), 38#L45-1true, 23#L56-1true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), Black: 68#(and (<= j2 i1) (= N2 N1)), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,652 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-25 19:55:05,652 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,652 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,657 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,658 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,666 INFO L129 PetriNetUnfolder]: 73/156 cut-off events. [2021-03-25 19:55:05,666 INFO L130 PetriNetUnfolder]: For 101/116 co-relation queries the response was YES. [2021-03-25 19:55:05,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 156 events. 73/156 cut-off events. For 101/116 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 553 event pairs, 7 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 313. Up to 61 conditions per place. [2021-03-25 19:55:05,668 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-25 19:55:05,670 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:05,670 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:05,671 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-03-25 19:55:05,675 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 165 flow [2021-03-25 19:55:05,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,676 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:05,676 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:05,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 19:55:05,676 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:05,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1185987058, now seen corresponding path program 3 times [2021-03-25 19:55:05,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:05,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714806232] [2021-03-25 19:55:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:05,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:05,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:05,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:05,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714806232] [2021-03-25 19:55:05,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:05,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:05,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630883843] [2021-03-25 19:55:05,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:05,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:05,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:05,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:05,727 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-03-25 19:55:05,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-25 19:55:05,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:05,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-03-25 19:55:05,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:05,757 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][27], [Black: 59#(and (<= i2 i1) (= N2 N1)), 80#(and (<= N1 i1) (<= j1 i1)), 38#L45-1true, 23#L56-1true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), 39#L77true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), Black: 68#(and (<= j2 i1) (= N2 N1)), 10#L33-1true, 13#thread1EXITtrue, 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,757 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,757 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,758 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,758 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,778 INFO L129 PetriNetUnfolder]: 212/429 cut-off events. [2021-03-25 19:55:05,778 INFO L130 PetriNetUnfolder]: For 523/555 co-relation queries the response was YES. [2021-03-25 19:55:05,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 429 events. 212/429 cut-off events. For 523/555 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2176 event pairs, 21 based on Foata normal form. 11/406 useless extension candidates. Maximal degree in co-relation 1004. Up to 162 conditions per place. [2021-03-25 19:55:05,782 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 13 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2021-03-25 19:55:05,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 311 flow [2021-03-25 19:55:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:55:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:55:05,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2021-03-25 19:55:05,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2021-03-25 19:55:05,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 190 transitions. [2021-03-25 19:55:05,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 190 transitions. [2021-03-25 19:55:05,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:05,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 190 transitions. [2021-03-25 19:55:05,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2021-03-25 19:55:05,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:05,786 INFO L185 Difference]: Start difference. First operand has 30 places, 31 transitions, 165 flow. Second operand 5 states and 190 transitions. [2021-03-25 19:55:05,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 311 flow [2021-03-25 19:55:05,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:05,789 INFO L241 Difference]: Finished difference. Result has 36 places, 43 transitions, 305 flow [2021-03-25 19:55:05,789 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2021-03-25 19:55:05,789 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-25 19:55:05,790 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:05,790 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 43 transitions, 305 flow [2021-03-25 19:55:05,790 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 43 transitions, 305 flow [2021-03-25 19:55:05,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 43 transitions, 305 flow [2021-03-25 19:55:05,798 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([128] L56-1-->L56-1: Formula: (and (= (+ v_counter2_23 (- 1)) v_counter2_22) (< 0 v_counter2_23) (< v_j2_13 v_N2_10) (= (+ v_j2_13 1) v_j2_12)) InVars {counter2=v_counter2_23, j2=v_j2_13, N2=v_N2_10} OutVars{counter2=v_counter2_22, j2=v_j2_12, N2=v_N2_10} AuxVars[] AssignedVars[counter2, j2][24], [Black: 59#(and (<= i2 i1) (= N2 N1)), 38#L45-1true, 39#L77true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), Black: 68#(and (<= j2 i1) (= N2 N1)), 10#L33-1true, 13#thread1EXITtrue, 80#(and (<= N1 i1) (<= j1 i1)), Black: 77#(<= j1 i1), Black: 78#(<= N1 i1), 23#L56-1true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:05,798 INFO L384 tUnfolder$Statistics]: this new event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,798 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,798 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,798 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-25 19:55:05,812 INFO L129 PetriNetUnfolder]: 178/361 cut-off events. [2021-03-25 19:55:05,812 INFO L130 PetriNetUnfolder]: For 572/607 co-relation queries the response was YES. [2021-03-25 19:55:05,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 361 events. 178/361 cut-off events. For 572/607 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1791 event pairs, 19 based on Foata normal form. 6/337 useless extension candidates. Maximal degree in co-relation 877. Up to 137 conditions per place. [2021-03-25 19:55:05,816 INFO L142 LiptonReduction]: Number of co-enabled transitions 222 [2021-03-25 19:55:05,820 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:05,820 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:05,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 19:55:05,821 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 305 flow [2021-03-25 19:55:05,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-25 19:55:05,821 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:05,821 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:05,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 19:55:05,822 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1242582712, now seen corresponding path program 4 times [2021-03-25 19:55:05,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:05,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184323619] [2021-03-25 19:55:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:05,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:05,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:05,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:05,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184323619] [2021-03-25 19:55:05,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233532165] [2021-03-25 19:55:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:05,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-25 19:55:05,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:05,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-25 19:55:05,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:05,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:05,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:05,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:06,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:06,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:06,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:06,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,051 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:55:06,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:06,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:06,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:06,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:55:06,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:06,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:06,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-25 19:55:06,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388052098] [2021-03-25 19:55:06,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 19:55:06,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:06,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 19:55:06,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 19:55:06,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-03-25 19:55:06,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:06,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-03-25 19:55:06,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:06,170 INFO L129 PetriNetUnfolder]: 272/565 cut-off events. [2021-03-25 19:55:06,170 INFO L130 PetriNetUnfolder]: For 1352/1476 co-relation queries the response was YES. [2021-03-25 19:55:06,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 565 events. 272/565 cut-off events. For 1352/1476 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3185 event pairs, 42 based on Foata normal form. 31/554 useless extension candidates. Maximal degree in co-relation 1615. Up to 227 conditions per place. [2021-03-25 19:55:06,176 INFO L132 encePairwiseOnDemand]: 50/54 looper letters, 23 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2021-03-25 19:55:06,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 464 flow [2021-03-25 19:55:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2021-03-25 19:55:06,178 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2021-03-25 19:55:06,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2021-03-25 19:55:06,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2021-03-25 19:55:06,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:06,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2021-03-25 19:55:06,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-03-25 19:55:06,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:06,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:06,179 INFO L185 Difference]: Start difference. First operand has 36 places, 43 transitions, 305 flow. Second operand 4 states and 153 transitions. [2021-03-25 19:55:06,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 464 flow [2021-03-25 19:55:06,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 19:55:06,188 INFO L241 Difference]: Finished difference. Result has 41 places, 47 transitions, 375 flow [2021-03-25 19:55:06,188 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2021-03-25 19:55:06,188 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-03-25 19:55:06,189 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:06,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 47 transitions, 375 flow [2021-03-25 19:55:06,189 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 47 transitions, 375 flow [2021-03-25 19:55:06,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 47 transitions, 375 flow [2021-03-25 19:55:06,221 INFO L129 PetriNetUnfolder]: 217/472 cut-off events. [2021-03-25 19:55:06,221 INFO L130 PetriNetUnfolder]: For 898/954 co-relation queries the response was YES. [2021-03-25 19:55:06,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 472 events. 217/472 cut-off events. For 898/954 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2695 event pairs, 23 based on Foata normal form. 8/440 useless extension candidates. Maximal degree in co-relation 1333. Up to 202 conditions per place. [2021-03-25 19:55:06,228 INFO L142 LiptonReduction]: Number of co-enabled transitions 260 [2021-03-25 19:55:06,232 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:06,232 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:06,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 19:55:06,235 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 375 flow [2021-03-25 19:55:06,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:06,236 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:06,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:06,456 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2096483012, now seen corresponding path program 1 times [2021-03-25 19:55:06,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:06,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193576378] [2021-03-25 19:55:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:06,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:06,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:06,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193576378] [2021-03-25 19:55:06,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:06,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 19:55:06,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890554474] [2021-03-25 19:55:06,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 19:55:06,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 19:55:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 19:55:06,491 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 54 [2021-03-25 19:55:06,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-03-25 19:55:06,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:06,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 54 [2021-03-25 19:55:06,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:06,526 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([120] thread3EXIT-->L80: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar2_4) (= 3 v_thread3Thread1of1ForFork2_thidvar1_4) (= 3 v_thread3Thread1of1ForFork2_thidvar0_4)) InVars {thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_4, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_4, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_4} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_4, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_4, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][43], [Black: 59#(and (<= i2 i1) (= N2 N1)), 6#L80true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), Black: 134#(and (< 0 N1) (<= j1 0) (<= 0 i1)), Black: 68#(and (<= j2 i1) (= N2 N1)), Black: 92#(and (<= j1 0) (<= 0 i1)), 138#true, 80#(and (<= N1 i1) (<= j1 i1)), Black: 77#(<= j1 i1), Black: 78#(<= N1 i1), 85#true, 23#L56-1true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:06,526 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is not cut-off event [2021-03-25 19:55:06,526 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-03-25 19:55:06,526 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is not cut-off event [2021-03-25 19:55:06,526 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is not cut-off event [2021-03-25 19:55:06,536 INFO L129 PetriNetUnfolder]: 202/456 cut-off events. [2021-03-25 19:55:06,537 INFO L130 PetriNetUnfolder]: For 1048/1088 co-relation queries the response was YES. [2021-03-25 19:55:06,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 456 events. 202/456 cut-off events. For 1048/1088 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2576 event pairs, 26 based on Foata normal form. 31/464 useless extension candidates. Maximal degree in co-relation 1301. Up to 198 conditions per place. [2021-03-25 19:55:06,541 INFO L132 encePairwiseOnDemand]: 51/54 looper letters, 5 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2021-03-25 19:55:06,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 397 flow [2021-03-25 19:55:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 19:55:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 19:55:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2021-03-25 19:55:06,543 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8209876543209876 [2021-03-25 19:55:06,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2021-03-25 19:55:06,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2021-03-25 19:55:06,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:06,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2021-03-25 19:55:06,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,545 INFO L185 Difference]: Start difference. First operand has 41 places, 47 transitions, 375 flow. Second operand 3 states and 133 transitions. [2021-03-25 19:55:06,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 397 flow [2021-03-25 19:55:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 393 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-03-25 19:55:06,550 INFO L241 Difference]: Finished difference. Result has 44 places, 46 transitions, 389 flow [2021-03-25 19:55:06,550 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2021-03-25 19:55:06,550 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2021-03-25 19:55:06,550 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:06,550 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 46 transitions, 389 flow [2021-03-25 19:55:06,551 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 46 transitions, 389 flow [2021-03-25 19:55:06,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 46 transitions, 389 flow [2021-03-25 19:55:06,581 INFO L129 PetriNetUnfolder]: 196/460 cut-off events. [2021-03-25 19:55:06,581 INFO L130 PetriNetUnfolder]: For 840/878 co-relation queries the response was YES. [2021-03-25 19:55:06,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 460 events. 196/460 cut-off events. For 840/878 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2688 event pairs, 21 based on Foata normal form. 4/439 useless extension candidates. Maximal degree in co-relation 1303. Up to 197 conditions per place. [2021-03-25 19:55:06,587 INFO L142 LiptonReduction]: Number of co-enabled transitions 226 [2021-03-25 19:55:06,600 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:06,600 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:06,600 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-25 19:55:06,601 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 389 flow [2021-03-25 19:55:06,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-03-25 19:55:06,602 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:06,602 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:06,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 19:55:06,602 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:06,602 INFO L82 PathProgramCache]: Analyzing trace with hash -549467037, now seen corresponding path program 1 times [2021-03-25 19:55:06,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:06,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261910215] [2021-03-25 19:55:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:06,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:06,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:06,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:06,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261910215] [2021-03-25 19:55:06,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:06,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:06,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571603056] [2021-03-25 19:55:06,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:06,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:06,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:06,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:06,653 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-03-25 19:55:06,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-25 19:55:06,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:06,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-03-25 19:55:06,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:06,719 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([120] thread3EXIT-->L80: Formula: (and (= 3 v_thread3Thread1of1ForFork2_thidvar2_4) (= 3 v_thread3Thread1of1ForFork2_thidvar1_4) (= 3 v_thread3Thread1of1ForFork2_thidvar0_4)) InVars {thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_4, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_4, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_4} OutVars{thread3Thread1of1ForFork2_thidvar2=v_thread3Thread1of1ForFork2_thidvar2_4, thread3Thread1of1ForFork2_thidvar1=v_thread3Thread1of1ForFork2_thidvar1_4, thread3Thread1of1ForFork2_thidvar0=v_thread3Thread1of1ForFork2_thidvar0_4} AuxVars[] AssignedVars[][63], [Black: 59#(and (<= i2 i1) (= N2 N1)), 6#L80true, 71#(and (<= j2 i1) (= N2 N1) (<= N2 i1)), Black: 134#(and (< 0 N1) (<= j1 0) (<= 0 i1)), Black: 68#(and (<= j2 i1) (= N2 N1)), Black: 92#(and (<= j1 0) (<= 0 i1)), 138#true, Black: 140#(<= counter1 0), 80#(and (<= N1 i1) (<= j1 i1)), 146#(<= N1 j1), Black: 77#(<= j1 i1), Black: 78#(<= N1 i1), 85#true, 23#L56-1true, Black: 54#(and (<= counter1 counter2) (< counter2 (+ counter1 1))), 62#(and (<= i2 i1) (= N2 N1) (<= N2 i1))]) [2021-03-25 19:55:06,720 INFO L384 tUnfolder$Statistics]: this new event has 13 ancestors and is not cut-off event [2021-03-25 19:55:06,720 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is not cut-off event [2021-03-25 19:55:06,720 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is not cut-off event [2021-03-25 19:55:06,720 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-03-25 19:55:06,729 INFO L129 PetriNetUnfolder]: 255/585 cut-off events. [2021-03-25 19:55:06,729 INFO L130 PetriNetUnfolder]: For 1987/2093 co-relation queries the response was YES. [2021-03-25 19:55:06,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 585 events. 255/585 cut-off events. For 1987/2093 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3631 event pairs, 38 based on Foata normal form. 65/622 useless extension candidates. Maximal degree in co-relation 1817. Up to 230 conditions per place. [2021-03-25 19:55:06,735 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 31 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2021-03-25 19:55:06,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 710 flow [2021-03-25 19:55:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:55:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:55:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2021-03-25 19:55:06,737 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2021-03-25 19:55:06,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 190 transitions. [2021-03-25 19:55:06,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 190 transitions. [2021-03-25 19:55:06,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:06,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 190 transitions. [2021-03-25 19:55:06,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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) [2021-03-25 19:55:06,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,739 INFO L185 Difference]: Start difference. First operand has 44 places, 46 transitions, 389 flow. Second operand 5 states and 190 transitions. [2021-03-25 19:55:06,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 710 flow [2021-03-25 19:55:06,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 699 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:06,746 INFO L241 Difference]: Finished difference. Result has 50 places, 56 transitions, 578 flow [2021-03-25 19:55:06,746 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2021-03-25 19:55:06,746 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-03-25 19:55:06,746 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:06,747 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 56 transitions, 578 flow [2021-03-25 19:55:06,747 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 56 transitions, 578 flow [2021-03-25 19:55:06,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 56 transitions, 578 flow [2021-03-25 19:55:06,785 INFO L129 PetriNetUnfolder]: 213/518 cut-off events. [2021-03-25 19:55:06,785 INFO L130 PetriNetUnfolder]: For 1651/1714 co-relation queries the response was YES. [2021-03-25 19:55:06,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 518 events. 213/518 cut-off events. For 1651/1714 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3221 event pairs, 25 based on Foata normal form. 11/503 useless extension candidates. Maximal degree in co-relation 1517. Up to 192 conditions per place. [2021-03-25 19:55:06,791 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 19:55:06,796 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:06,796 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:06,797 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-25 19:55:06,797 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 578 flow [2021-03-25 19:55:06,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2021-03-25 19:55:06,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:06,797 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:06,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 19:55:06,799 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:06,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2091140931, now seen corresponding path program 1 times [2021-03-25 19:55:06,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:06,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106978425] [2021-03-25 19:55:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:06,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:06,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:06,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106978425] [2021-03-25 19:55:06,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:06,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 19:55:06,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514362233] [2021-03-25 19:55:06,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 19:55:06,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:06,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 19:55:06,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 19:55:06,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 54 [2021-03-25 19:55:06,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 578 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 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) [2021-03-25 19:55:06,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:06,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 54 [2021-03-25 19:55:06,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:06,879 INFO L129 PetriNetUnfolder]: 180/431 cut-off events. [2021-03-25 19:55:06,880 INFO L130 PetriNetUnfolder]: For 1661/1697 co-relation queries the response was YES. [2021-03-25 19:55:06,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 431 events. 180/431 cut-off events. For 1661/1697 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2431 event pairs, 20 based on Foata normal form. 19/431 useless extension candidates. Maximal degree in co-relation 1376. Up to 163 conditions per place. [2021-03-25 19:55:06,884 INFO L132 encePairwiseOnDemand]: 51/54 looper letters, 5 selfloop transitions, 4 changer transitions 9/52 dead transitions. [2021-03-25 19:55:06,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 555 flow [2021-03-25 19:55:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 19:55:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 19:55:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-03-25 19:55:06,885 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-03-25 19:55:06,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-03-25 19:55:06,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-03-25 19:55:06,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:06,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-03-25 19:55:06,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:06,887 INFO L185 Difference]: Start difference. First operand has 50 places, 56 transitions, 578 flow. Second operand 3 states and 135 transitions. [2021-03-25 19:55:06,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 555 flow [2021-03-25 19:55:06,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 533 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-03-25 19:55:06,896 INFO L241 Difference]: Finished difference. Result has 51 places, 43 transitions, 417 flow [2021-03-25 19:55:06,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2021-03-25 19:55:06,897 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-03-25 19:55:06,897 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:06,897 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 43 transitions, 417 flow [2021-03-25 19:55:06,898 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 43 transitions, 417 flow [2021-03-25 19:55:06,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 43 transitions, 417 flow [2021-03-25 19:55:06,926 INFO L129 PetriNetUnfolder]: 145/370 cut-off events. [2021-03-25 19:55:06,926 INFO L130 PetriNetUnfolder]: For 1305/1335 co-relation queries the response was YES. [2021-03-25 19:55:06,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 370 events. 145/370 cut-off events. For 1305/1335 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2100 event pairs, 17 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 1072. Up to 133 conditions per place. [2021-03-25 19:55:06,931 INFO L142 LiptonReduction]: Number of co-enabled transitions 206 [2021-03-25 19:55:06,934 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:06,934 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:06,934 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 19:55:06,935 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 417 flow [2021-03-25 19:55:06,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 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) [2021-03-25 19:55:06,935 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:06,935 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:06,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 19:55:06,936 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1277385569, now seen corresponding path program 2 times [2021-03-25 19:55:06,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:06,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464798732] [2021-03-25 19:55:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:06,964 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:06,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:06,978 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:55:06,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:06,987 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:06,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:06,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:06,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464798732] [2021-03-25 19:55:06,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:06,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:06,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118393464] [2021-03-25 19:55:06,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:06,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:06,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:06,990 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2021-03-25 19:55:06,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-03-25 19:55:06,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:06,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2021-03-25 19:55:06,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:07,141 INFO L129 PetriNetUnfolder]: 515/939 cut-off events. [2021-03-25 19:55:07,141 INFO L130 PetriNetUnfolder]: For 3755/3782 co-relation queries the response was YES. [2021-03-25 19:55:07,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 939 events. 515/939 cut-off events. For 3755/3782 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5093 event pairs, 118 based on Foata normal form. 58/992 useless extension candidates. Maximal degree in co-relation 3785. Up to 484 conditions per place. [2021-03-25 19:55:07,150 INFO L132 encePairwiseOnDemand]: 50/54 looper letters, 46 selfloop transitions, 8 changer transitions 2/65 dead transitions. [2021-03-25 19:55:07,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 741 flow [2021-03-25 19:55:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2021-03-25 19:55:07,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2021-03-25 19:55:07,152 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 127 transitions. [2021-03-25 19:55:07,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 127 transitions. [2021-03-25 19:55:07,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:07,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 127 transitions. [2021-03-25 19:55:07,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 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) [2021-03-25 19:55:07,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:07,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:07,154 INFO L185 Difference]: Start difference. First operand has 51 places, 43 transitions, 417 flow. Second operand 4 states and 127 transitions. [2021-03-25 19:55:07,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 741 flow [2021-03-25 19:55:07,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 707 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-25 19:55:07,162 INFO L241 Difference]: Finished difference. Result has 53 places, 46 transitions, 446 flow [2021-03-25 19:55:07,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2021-03-25 19:55:07,162 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2021-03-25 19:55:07,163 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:07,163 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 46 transitions, 446 flow [2021-03-25 19:55:07,163 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 46 transitions, 446 flow [2021-03-25 19:55:07,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 446 flow [2021-03-25 19:55:07,198 INFO L129 PetriNetUnfolder]: 179/442 cut-off events. [2021-03-25 19:55:07,198 INFO L130 PetriNetUnfolder]: For 1344/1386 co-relation queries the response was YES. [2021-03-25 19:55:07,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 442 events. 179/442 cut-off events. For 1344/1386 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2554 event pairs, 23 based on Foata normal form. 3/429 useless extension candidates. Maximal degree in co-relation 1434. Up to 181 conditions per place. [2021-03-25 19:55:07,204 INFO L142 LiptonReduction]: Number of co-enabled transitions 218 [2021-03-25 19:55:07,208 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:07,208 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:07,208 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 19:55:07,208 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 446 flow [2021-03-25 19:55:07,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-03-25 19:55:07,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:07,209 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:07,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 19:55:07,209 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1963541993, now seen corresponding path program 3 times [2021-03-25 19:55:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:07,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035066721] [2021-03-25 19:55:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:07,220 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:07,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,226 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:07,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:07,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:07,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035066721] [2021-03-25 19:55:07,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:07,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:55:07,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922560555] [2021-03-25 19:55:07,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:55:07,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:07,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:55:07,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:55:07,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2021-03-25 19:55:07,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:07,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:07,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2021-03-25 19:55:07,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:07,403 INFO L129 PetriNetUnfolder]: 580/1124 cut-off events. [2021-03-25 19:55:07,403 INFO L130 PetriNetUnfolder]: For 5106/5133 co-relation queries the response was YES. [2021-03-25 19:55:07,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 1124 events. 580/1124 cut-off events. For 5106/5133 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6668 event pairs, 54 based on Foata normal form. 32/1147 useless extension candidates. Maximal degree in co-relation 4673. Up to 450 conditions per place. [2021-03-25 19:55:07,414 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 65 selfloop transitions, 11 changer transitions 5/90 dead transitions. [2021-03-25 19:55:07,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 1027 flow [2021-03-25 19:55:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 19:55:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 19:55:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2021-03-25 19:55:07,415 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6148148148148148 [2021-03-25 19:55:07,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 166 transitions. [2021-03-25 19:55:07,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 166 transitions. [2021-03-25 19:55:07,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:07,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 166 transitions. [2021-03-25 19:55:07,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:07,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:07,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:07,417 INFO L185 Difference]: Start difference. First operand has 53 places, 46 transitions, 446 flow. Second operand 5 states and 166 transitions. [2021-03-25 19:55:07,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 1027 flow [2021-03-25 19:55:07,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 1027 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 19:55:07,427 INFO L241 Difference]: Finished difference. Result has 59 places, 54 transitions, 553 flow [2021-03-25 19:55:07,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=553, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2021-03-25 19:55:07,427 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2021-03-25 19:55:07,427 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:07,427 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 54 transitions, 553 flow [2021-03-25 19:55:07,427 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 54 transitions, 553 flow [2021-03-25 19:55:07,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 553 flow [2021-03-25 19:55:07,477 INFO L129 PetriNetUnfolder]: 236/646 cut-off events. [2021-03-25 19:55:07,477 INFO L130 PetriNetUnfolder]: For 2406/2460 co-relation queries the response was YES. [2021-03-25 19:55:07,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 646 events. 236/646 cut-off events. For 2406/2460 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4512 event pairs, 36 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 2263. Up to 245 conditions per place. [2021-03-25 19:55:07,486 INFO L142 LiptonReduction]: Number of co-enabled transitions 258 [2021-03-25 19:55:07,490 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:07,491 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:07,491 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 19:55:07,491 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 553 flow [2021-03-25 19:55:07,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:07,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:07,491 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:07,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 19:55:07,492 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:07,492 INFO L82 PathProgramCache]: Analyzing trace with hash -814504031, now seen corresponding path program 4 times [2021-03-25 19:55:07,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:07,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365027500] [2021-03-25 19:55:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:07,502 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:07,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,508 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:07,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,524 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:07,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:07,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365027500] [2021-03-25 19:55:07,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:55:07,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 19:55:07,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047914082] [2021-03-25 19:55:07,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 19:55:07,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 19:55:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 19:55:07,527 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2021-03-25 19:55:07,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 553 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-03-25 19:55:07,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:07,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2021-03-25 19:55:07,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:07,692 INFO L129 PetriNetUnfolder]: 641/1243 cut-off events. [2021-03-25 19:55:07,692 INFO L130 PetriNetUnfolder]: For 6183/6210 co-relation queries the response was YES. [2021-03-25 19:55:07,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 1243 events. 641/1243 cut-off events. For 6183/6210 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7492 event pairs, 155 based on Foata normal form. 7/1246 useless extension candidates. Maximal degree in co-relation 5617. Up to 527 conditions per place. [2021-03-25 19:55:07,709 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 54 selfloop transitions, 10 changer transitions 6/79 dead transitions. [2021-03-25 19:55:07,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 958 flow [2021-03-25 19:55:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2021-03-25 19:55:07,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2021-03-25 19:55:07,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 128 transitions. [2021-03-25 19:55:07,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 128 transitions. [2021-03-25 19:55:07,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:07,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 128 transitions. [2021-03-25 19:55:07,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.0) internal successors, (128), 4 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) [2021-03-25 19:55:07,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:07,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:07,712 INFO L185 Difference]: Start difference. First operand has 59 places, 54 transitions, 553 flow. Second operand 4 states and 128 transitions. [2021-03-25 19:55:07,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 958 flow [2021-03-25 19:55:07,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 937 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:07,726 INFO L241 Difference]: Finished difference. Result has 63 places, 52 transitions, 580 flow [2021-03-25 19:55:07,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=580, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2021-03-25 19:55:07,726 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 36 predicate places. [2021-03-25 19:55:07,727 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:07,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 52 transitions, 580 flow [2021-03-25 19:55:07,727 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 52 transitions, 580 flow [2021-03-25 19:55:07,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 52 transitions, 580 flow [2021-03-25 19:55:07,789 INFO L129 PetriNetUnfolder]: 293/726 cut-off events. [2021-03-25 19:55:07,789 INFO L130 PetriNetUnfolder]: For 2882/2958 co-relation queries the response was YES. [2021-03-25 19:55:07,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 726 events. 293/726 cut-off events. For 2882/2958 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4919 event pairs, 66 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 2651. Up to 267 conditions per place. [2021-03-25 19:55:07,799 INFO L142 LiptonReduction]: Number of co-enabled transitions 234 [2021-03-25 19:55:07,804 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:07,804 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:07,804 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-03-25 19:55:07,804 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 580 flow [2021-03-25 19:55:07,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2021-03-25 19:55:07,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:07,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:07,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 19:55:07,805 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1471252175, now seen corresponding path program 1 times [2021-03-25 19:55:07,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:07,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931462682] [2021-03-25 19:55:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:07,825 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:07,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,832 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:55:07,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:07,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:55:07,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931462682] [2021-03-25 19:55:07,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954959222] [2021-03-25 19:55:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:07,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2021-03-25 19:55:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:07,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:07,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 19:55:07,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:07,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 19:55:07,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:07,984 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:55:07,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:07,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:07,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:55:07,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:07,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:07,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:55:08,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:08,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-03-25 19:55:08,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136836393] [2021-03-25 19:55:08,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 19:55:08,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:08,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 19:55:08,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 19:55:08,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2021-03-25 19:55:08,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 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) [2021-03-25 19:55:08,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:08,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2021-03-25 19:55:08,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:08,193 INFO L129 PetriNetUnfolder]: 552/1089 cut-off events. [2021-03-25 19:55:08,193 INFO L130 PetriNetUnfolder]: For 5625/5646 co-relation queries the response was YES. [2021-03-25 19:55:08,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 1089 events. 552/1089 cut-off events. For 5625/5646 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6324 event pairs, 109 based on Foata normal form. 62/1151 useless extension candidates. Maximal degree in co-relation 5124. Up to 728 conditions per place. [2021-03-25 19:55:08,205 INFO L132 encePairwiseOnDemand]: 50/54 looper letters, 44 selfloop transitions, 10 changer transitions 6/69 dead transitions. [2021-03-25 19:55:08,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 886 flow [2021-03-25 19:55:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 19:55:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 19:55:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2021-03-25 19:55:08,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2021-03-25 19:55:08,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 131 transitions. [2021-03-25 19:55:08,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 131 transitions. [2021-03-25 19:55:08,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:08,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 131 transitions. [2021-03-25 19:55:08,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 32.75) internal successors, (131), 4 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) [2021-03-25 19:55:08,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:08,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 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) [2021-03-25 19:55:08,208 INFO L185 Difference]: Start difference. First operand has 63 places, 52 transitions, 580 flow. Second operand 4 states and 131 transitions. [2021-03-25 19:55:08,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 886 flow [2021-03-25 19:55:08,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 69 transitions, 832 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-25 19:55:08,218 INFO L241 Difference]: Finished difference. Result has 65 places, 52 transitions, 579 flow [2021-03-25 19:55:08,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=579, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2021-03-25 19:55:08,218 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2021-03-25 19:55:08,218 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:08,218 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 52 transitions, 579 flow [2021-03-25 19:55:08,218 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 52 transitions, 579 flow [2021-03-25 19:55:08,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 579 flow [2021-03-25 19:55:08,269 INFO L129 PetriNetUnfolder]: 230/630 cut-off events. [2021-03-25 19:55:08,270 INFO L130 PetriNetUnfolder]: For 2465/2545 co-relation queries the response was YES. [2021-03-25 19:55:08,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 630 events. 230/630 cut-off events. For 2465/2545 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4299 event pairs, 60 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 2381. Up to 245 conditions per place. [2021-03-25 19:55:08,279 INFO L142 LiptonReduction]: Number of co-enabled transitions 204 [2021-03-25 19:55:08,283 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:08,283 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:08,283 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-25 19:55:08,285 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 579 flow [2021-03-25 19:55:08,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 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) [2021-03-25 19:55:08,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:08,285 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:08,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-03-25 19:55:08,504 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:08,504 INFO L82 PathProgramCache]: Analyzing trace with hash -612204777, now seen corresponding path program 1 times [2021-03-25 19:55:08,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:08,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830036065] [2021-03-25 19:55:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:08,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:08,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:08,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:55:08,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830036065] [2021-03-25 19:55:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398380896] [2021-03-25 19:55:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:08,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 19:55:08,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:08,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:08,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:08,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:08,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:08,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:08,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:08,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:08,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,691 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-03-25 19:55:08,691 INFO L142 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-03-25 19:55:08,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,707 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-03-25 19:55:08,707 INFO L142 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-03-25 19:55:08,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:08,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:55:08,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:08,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-03-25 19:55:08,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478549077] [2021-03-25 19:55:08,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 19:55:08,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 19:55:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-25 19:55:08,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 54 [2021-03-25 19:55:08,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 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) [2021-03-25 19:55:08,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:08,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 54 [2021-03-25 19:55:08,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:08,928 INFO L129 PetriNetUnfolder]: 495/1367 cut-off events. [2021-03-25 19:55:08,928 INFO L130 PetriNetUnfolder]: For 7331/7543 co-relation queries the response was YES. [2021-03-25 19:55:08,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6158 conditions, 1367 events. 495/1367 cut-off events. For 7331/7543 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11548 event pairs, 154 based on Foata normal form. 126/1390 useless extension candidates. Maximal degree in co-relation 5675. Up to 488 conditions per place. [2021-03-25 19:55:08,943 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 29 selfloop transitions, 53 changer transitions 2/106 dead transitions. [2021-03-25 19:55:08,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 1374 flow [2021-03-25 19:55:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 19:55:08,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 19:55:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 242 transitions. [2021-03-25 19:55:08,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7469135802469136 [2021-03-25 19:55:08,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 242 transitions. [2021-03-25 19:55:08,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 242 transitions. [2021-03-25 19:55:08,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:08,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 242 transitions. [2021-03-25 19:55:08,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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) [2021-03-25 19:55:08,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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) [2021-03-25 19:55:08,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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) [2021-03-25 19:55:08,947 INFO L185 Difference]: Start difference. First operand has 65 places, 52 transitions, 579 flow. Second operand 6 states and 242 transitions. [2021-03-25 19:55:08,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 1374 flow [2021-03-25 19:55:08,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 1264 flow, removed 43 selfloop flow, removed 3 redundant places. [2021-03-25 19:55:08,961 INFO L241 Difference]: Finished difference. Result has 71 places, 102 transitions, 1324 flow [2021-03-25 19:55:08,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=71, PETRI_TRANSITIONS=102} [2021-03-25 19:55:08,961 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 44 predicate places. [2021-03-25 19:55:08,962 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:08,962 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 102 transitions, 1324 flow [2021-03-25 19:55:08,962 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 102 transitions, 1324 flow [2021-03-25 19:55:08,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 102 transitions, 1324 flow [2021-03-25 19:55:09,084 INFO L129 PetriNetUnfolder]: 483/1324 cut-off events. [2021-03-25 19:55:09,084 INFO L130 PetriNetUnfolder]: For 5517/5619 co-relation queries the response was YES. [2021-03-25 19:55:09,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5798 conditions, 1324 events. 483/1324 cut-off events. For 5517/5619 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11026 event pairs, 155 based on Foata normal form. 5/1219 useless extension candidates. Maximal degree in co-relation 5269. Up to 460 conditions per place. [2021-03-25 19:55:09,104 INFO L142 LiptonReduction]: Number of co-enabled transitions 474 [2021-03-25 19:55:09,118 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:09,118 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:09,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 156 [2021-03-25 19:55:09,119 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 102 transitions, 1324 flow [2021-03-25 19:55:09,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 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) [2021-03-25 19:55:09,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:09,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:09,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-25 19:55:09,340 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:09,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1627701831, now seen corresponding path program 2 times [2021-03-25 19:55:09,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:09,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193962762] [2021-03-25 19:55:09,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:09,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:09,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:09,395 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:55:09,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193962762] [2021-03-25 19:55:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789429849] [2021-03-25 19:55:09,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:09,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 19:55:09,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:09,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 19:55:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:09,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:09,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:09,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:09,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:09,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:09,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:09,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,487 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-03-25 19:55:09,487 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 19:55:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:09,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:09,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:09,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 19:55:09,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320218896] [2021-03-25 19:55:09,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 19:55:09,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:09,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 19:55:09,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-03-25 19:55:09,528 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 54 [2021-03-25 19:55:09,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 102 transitions, 1324 flow. Second operand has 12 states, 12 states have (on average 37.0) internal successors, (444), 12 states have internal predecessors, (444), 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) [2021-03-25 19:55:09,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:09,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 54 [2021-03-25 19:55:09,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:09,826 INFO L129 PetriNetUnfolder]: 781/2523 cut-off events. [2021-03-25 19:55:09,826 INFO L130 PetriNetUnfolder]: For 12944/13357 co-relation queries the response was YES. [2021-03-25 19:55:09,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11046 conditions, 2523 events. 781/2523 cut-off events. For 12944/13357 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 26480 event pairs, 324 based on Foata normal form. 295/2587 useless extension candidates. Maximal degree in co-relation 9868. Up to 799 conditions per place. [2021-03-25 19:55:09,853 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 29 selfloop transitions, 98 changer transitions 1/150 dead transitions. [2021-03-25 19:55:09,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 2136 flow [2021-03-25 19:55:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 19:55:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 19:55:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 319 transitions. [2021-03-25 19:55:09,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7384259259259259 [2021-03-25 19:55:09,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 319 transitions. [2021-03-25 19:55:09,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 319 transitions. [2021-03-25 19:55:09,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:09,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 319 transitions. [2021-03-25 19:55:09,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 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) [2021-03-25 19:55:09,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 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) [2021-03-25 19:55:09,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 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) [2021-03-25 19:55:09,858 INFO L185 Difference]: Start difference. First operand has 71 places, 102 transitions, 1324 flow. Second operand 8 states and 319 transitions. [2021-03-25 19:55:09,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 2136 flow [2021-03-25 19:55:09,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 150 transitions, 2006 flow, removed 65 selfloop flow, removed 0 redundant places. [2021-03-25 19:55:09,883 INFO L241 Difference]: Finished difference. Result has 82 places, 147 transitions, 2089 flow [2021-03-25 19:55:09,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2089, PETRI_PLACES=82, PETRI_TRANSITIONS=147} [2021-03-25 19:55:09,883 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 55 predicate places. [2021-03-25 19:55:09,883 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:09,883 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 147 transitions, 2089 flow [2021-03-25 19:55:09,883 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 147 transitions, 2089 flow [2021-03-25 19:55:09,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 147 transitions, 2089 flow [2021-03-25 19:55:10,119 INFO L129 PetriNetUnfolder]: 768/2512 cut-off events. [2021-03-25 19:55:10,119 INFO L130 PetriNetUnfolder]: For 12317/12555 co-relation queries the response was YES. [2021-03-25 19:55:10,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10888 conditions, 2512 events. 768/2512 cut-off events. For 12317/12555 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 26277 event pairs, 327 based on Foata normal form. 10/2302 useless extension candidates. Maximal degree in co-relation 9475. Up to 793 conditions per place. [2021-03-25 19:55:10,163 INFO L142 LiptonReduction]: Number of co-enabled transitions 720 [2021-03-25 19:55:10,190 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:10,190 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:10,190 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 307 [2021-03-25 19:55:10,191 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 147 transitions, 2089 flow [2021-03-25 19:55:10,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 37.0) internal successors, (444), 12 states have internal predecessors, (444), 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) [2021-03-25 19:55:10,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:10,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:10,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:10,412 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:10,412 INFO L82 PathProgramCache]: Analyzing trace with hash 203543515, now seen corresponding path program 3 times [2021-03-25 19:55:10,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:10,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260414239] [2021-03-25 19:55:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:10,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:10,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:10,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:55:10,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260414239] [2021-03-25 19:55:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628522971] [2021-03-25 19:55:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:10,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-25 19:55:10,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:10,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 19:55:10,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,505 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-03-25 19:55:10,505 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 19:55:10,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:10,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:10,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:10,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:10,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:10,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:10,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:10,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,555 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-03-25 19:55:10,555 INFO L142 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-03-25 19:55:10,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:10,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:10,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:10,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-03-25 19:55:10,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290716573] [2021-03-25 19:55:10,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 19:55:10,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 19:55:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 19:55:10,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 54 [2021-03-25 19:55:10,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 147 transitions, 2089 flow. Second operand has 11 states, 11 states have (on average 37.09090909090909) internal successors, (408), 11 states have internal predecessors, (408), 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) [2021-03-25 19:55:10,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:10,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 54 [2021-03-25 19:55:10,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:11,055 INFO L129 PetriNetUnfolder]: 1038/3398 cut-off events. [2021-03-25 19:55:11,055 INFO L130 PetriNetUnfolder]: For 19459/19829 co-relation queries the response was YES. [2021-03-25 19:55:11,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15933 conditions, 3398 events. 1038/3398 cut-off events. For 19459/19829 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 37745 event pairs, 455 based on Foata normal form. 43/3118 useless extension candidates. Maximal degree in co-relation 14043. Up to 1092 conditions per place. [2021-03-25 19:55:11,096 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 105 selfloop transitions, 81 changer transitions 1/209 dead transitions. [2021-03-25 19:55:11,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 209 transitions, 3359 flow [2021-03-25 19:55:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 19:55:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 19:55:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2021-03-25 19:55:11,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2021-03-25 19:55:11,098 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 276 transitions. [2021-03-25 19:55:11,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 276 transitions. [2021-03-25 19:55:11,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:11,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 276 transitions. [2021-03-25 19:55:11,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 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) [2021-03-25 19:55:11,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:11,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:11,101 INFO L185 Difference]: Start difference. First operand has 82 places, 147 transitions, 2089 flow. Second operand 7 states and 276 transitions. [2021-03-25 19:55:11,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 209 transitions, 3359 flow [2021-03-25 19:55:11,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 209 transitions, 3105 flow, removed 127 selfloop flow, removed 0 redundant places. [2021-03-25 19:55:11,147 INFO L241 Difference]: Finished difference. Result has 93 places, 206 transitions, 3111 flow [2021-03-25 19:55:11,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=93, PETRI_TRANSITIONS=206} [2021-03-25 19:55:11,147 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 66 predicate places. [2021-03-25 19:55:11,148 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:11,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 206 transitions, 3111 flow [2021-03-25 19:55:11,148 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 206 transitions, 3111 flow [2021-03-25 19:55:11,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 206 transitions, 3111 flow [2021-03-25 19:55:11,465 INFO L129 PetriNetUnfolder]: 1067/3437 cut-off events. [2021-03-25 19:55:11,466 INFO L130 PetriNetUnfolder]: For 17825/18179 co-relation queries the response was YES. [2021-03-25 19:55:11,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15310 conditions, 3437 events. 1067/3437 cut-off events. For 17825/18179 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 37980 event pairs, 473 based on Foata normal form. 13/3131 useless extension candidates. Maximal degree in co-relation 13537. Up to 1090 conditions per place. [2021-03-25 19:55:11,574 INFO L142 LiptonReduction]: Number of co-enabled transitions 1036 [2021-03-25 19:55:11,604 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:11,604 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:11,604 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 456 [2021-03-25 19:55:11,606 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 206 transitions, 3111 flow [2021-03-25 19:55:11,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 37.09090909090909) internal successors, (408), 11 states have internal predecessors, (408), 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) [2021-03-25 19:55:11,607 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:11,607 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:11,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-25 19:55:11,820 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1731294479, now seen corresponding path program 4 times [2021-03-25 19:55:11,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:11,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94372540] [2021-03-25 19:55:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:11,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:11,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:11,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-25 19:55:11,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:11,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94372540] [2021-03-25 19:55:11,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675892132] [2021-03-25 19:55:11,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:11,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-25 19:55:11,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:11,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-25 19:55:11,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:11,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:11,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:11,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:11,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:11,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:11,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:11,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:11,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,989 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-03-25 19:55:11,990 INFO L142 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-03-25 19:55:11,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:11,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:11,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:12,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:12,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:12,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-03-25 19:55:12,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126156203] [2021-03-25 19:55:12,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 19:55:12,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:12,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 19:55:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-25 19:55:12,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 54 [2021-03-25 19:55:12,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 206 transitions, 3111 flow. Second operand has 12 states, 12 states have (on average 37.0) internal successors, (444), 12 states have internal predecessors, (444), 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) [2021-03-25 19:55:12,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:12,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 54 [2021-03-25 19:55:12,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:12,479 INFO L129 PetriNetUnfolder]: 1026/3354 cut-off events. [2021-03-25 19:55:12,479 INFO L130 PetriNetUnfolder]: For 19804/20156 co-relation queries the response was YES. [2021-03-25 19:55:12,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15885 conditions, 3354 events. 1026/3354 cut-off events. For 19804/20156 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 37270 event pairs, 457 based on Foata normal form. 48/3079 useless extension candidates. Maximal degree in co-relation 14179. Up to 1088 conditions per place. [2021-03-25 19:55:12,520 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 29 selfloop transitions, 155 changer transitions 0/206 dead transitions. [2021-03-25 19:55:12,521 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 206 transitions, 3485 flow [2021-03-25 19:55:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 19:55:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 19:55:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2021-03-25 19:55:12,522 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7345679012345679 [2021-03-25 19:55:12,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 238 transitions. [2021-03-25 19:55:12,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 238 transitions. [2021-03-25 19:55:12,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:12,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 238 transitions. [2021-03-25 19:55:12,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 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) [2021-03-25 19:55:12,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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) [2021-03-25 19:55:12,524 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 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) [2021-03-25 19:55:12,524 INFO L185 Difference]: Start difference. First operand has 93 places, 206 transitions, 3111 flow. Second operand 6 states and 238 transitions. [2021-03-25 19:55:12,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 206 transitions, 3485 flow [2021-03-25 19:55:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 206 transitions, 3427 flow, removed 14 selfloop flow, removed 1 redundant places. [2021-03-25 19:55:12,582 INFO L241 Difference]: Finished difference. Result has 96 places, 204 transitions, 3345 flow [2021-03-25 19:55:12,582 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3345, PETRI_PLACES=96, PETRI_TRANSITIONS=204} [2021-03-25 19:55:12,582 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 69 predicate places. [2021-03-25 19:55:12,582 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:12,582 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 204 transitions, 3345 flow [2021-03-25 19:55:12,583 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 204 transitions, 3345 flow [2021-03-25 19:55:12,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 204 transitions, 3345 flow [2021-03-25 19:55:12,900 INFO L129 PetriNetUnfolder]: 1041/3364 cut-off events. [2021-03-25 19:55:12,900 INFO L130 PetriNetUnfolder]: For 18811/19173 co-relation queries the response was YES. [2021-03-25 19:55:12,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15566 conditions, 3364 events. 1041/3364 cut-off events. For 18811/19173 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 37238 event pairs, 461 based on Foata normal form. 10/3064 useless extension candidates. Maximal degree in co-relation 13967. Up to 1065 conditions per place. [2021-03-25 19:55:12,952 INFO L142 LiptonReduction]: Number of co-enabled transitions 1036 [2021-03-25 19:55:12,967 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:12,967 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:12,967 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 385 [2021-03-25 19:55:12,968 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 204 transitions, 3345 flow [2021-03-25 19:55:12,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 37.0) internal successors, (444), 12 states have internal predecessors, (444), 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) [2021-03-25 19:55:12,968 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:12,968 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:13,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:13,190 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:13,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash 25474240, now seen corresponding path program 5 times [2021-03-25 19:55:13,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:13,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484863828] [2021-03-25 19:55:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:13,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:13,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:13,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:13,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:13,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:55:13,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484863828] [2021-03-25 19:55:13,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115698081] [2021-03-25 19:55:13,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:13,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 19:55:13,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:13,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 19:55:13,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:13,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:13,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:13,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:13,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:13,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:13,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:13,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:13,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:13,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:13,345 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:55:13,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:13,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:13,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:13,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:55:13,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:55:13,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:13,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 19:55:13,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330317887] [2021-03-25 19:55:13,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 19:55:13,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:13,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 19:55:13,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-25 19:55:13,370 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-03-25 19:55:13,370 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 204 transitions, 3345 flow. Second operand has 10 states, 10 states have (on average 36.2) internal successors, (362), 10 states have internal predecessors, (362), 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) [2021-03-25 19:55:13,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:13,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-03-25 19:55:13,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:14,392 INFO L129 PetriNetUnfolder]: 2545/7186 cut-off events. [2021-03-25 19:55:14,392 INFO L130 PetriNetUnfolder]: For 51402/52443 co-relation queries the response was YES. [2021-03-25 19:55:14,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36253 conditions, 7186 events. 2545/7186 cut-off events. For 51402/52443 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 83955 event pairs, 1093 based on Foata normal form. 390/6857 useless extension candidates. Maximal degree in co-relation 33262. Up to 2489 conditions per place. [2021-03-25 19:55:14,460 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 143 selfloop transitions, 253 changer transitions 2/487 dead transitions. [2021-03-25 19:55:14,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 487 transitions, 8408 flow [2021-03-25 19:55:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 19:55:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 19:55:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 461 transitions. [2021-03-25 19:55:14,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7114197530864198 [2021-03-25 19:55:14,466 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 461 transitions. [2021-03-25 19:55:14,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 461 transitions. [2021-03-25 19:55:14,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:14,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 461 transitions. [2021-03-25 19:55:14,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.416666666666664) internal successors, (461), 12 states have internal predecessors, (461), 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) [2021-03-25 19:55:14,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 54.0) internal successors, (702), 13 states have internal predecessors, (702), 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) [2021-03-25 19:55:14,470 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 54.0) internal successors, (702), 13 states have internal predecessors, (702), 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) [2021-03-25 19:55:14,470 INFO L185 Difference]: Start difference. First operand has 96 places, 204 transitions, 3345 flow. Second operand 12 states and 461 transitions. [2021-03-25 19:55:14,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 487 transitions, 8408 flow [2021-03-25 19:55:14,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 487 transitions, 7642 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 19:55:14,577 INFO L241 Difference]: Finished difference. Result has 110 places, 455 transitions, 7658 flow [2021-03-25 19:55:14,577 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7658, PETRI_PLACES=110, PETRI_TRANSITIONS=455} [2021-03-25 19:55:14,578 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 83 predicate places. [2021-03-25 19:55:14,578 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:14,578 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 455 transitions, 7658 flow [2021-03-25 19:55:14,578 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 455 transitions, 7658 flow [2021-03-25 19:55:14,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 455 transitions, 7658 flow [2021-03-25 19:55:15,534 INFO L129 PetriNetUnfolder]: 2472/7095 cut-off events. [2021-03-25 19:55:15,535 INFO L130 PetriNetUnfolder]: For 65266/66148 co-relation queries the response was YES. [2021-03-25 19:55:15,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37624 conditions, 7095 events. 2472/7095 cut-off events. For 65266/66148 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 83339 event pairs, 1073 based on Foata normal form. 30/6418 useless extension candidates. Maximal degree in co-relation 34507. Up to 2411 conditions per place. [2021-03-25 19:55:15,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 2482 [2021-03-25 19:55:15,736 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:15,736 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:15,736 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1158 [2021-03-25 19:55:15,737 INFO L480 AbstractCegarLoop]: Abstraction has has 110 places, 455 transitions, 7658 flow [2021-03-25 19:55:15,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 36.2) internal successors, (362), 10 states have internal predecessors, (362), 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) [2021-03-25 19:55:15,737 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:15,737 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:15,951 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-25 19:55:15,952 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:15,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1460256209, now seen corresponding path program 6 times [2021-03-25 19:55:15,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:15,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006039739] [2021-03-25 19:55:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:15,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:15,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:15,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:15,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:15,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:15,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:55:15,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:15,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:55:15,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:15,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:55:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006039739] [2021-03-25 19:55:15,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931163545] [2021-03-25 19:55:15,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:16,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-25 19:55:16,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:16,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 19:55:16,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:16,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:16,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:16,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:16,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,041 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:55:16,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:16,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:16,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:16,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:16,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:55:16,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:16,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:16,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:16,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:16,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 19:55:16,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:16,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:55:16,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:16,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 19:55:16,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276791799] [2021-03-25 19:55:16,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 19:55:16,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:16,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 19:55:16,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-25 19:55:16,098 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 54 [2021-03-25 19:55:16,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 455 transitions, 7658 flow. Second operand has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 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) [2021-03-25 19:55:16,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:16,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 54 [2021-03-25 19:55:16,099 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:18,049 INFO L129 PetriNetUnfolder]: 4184/11395 cut-off events. [2021-03-25 19:55:18,049 INFO L130 PetriNetUnfolder]: For 128360/130478 co-relation queries the response was YES. [2021-03-25 19:55:18,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66493 conditions, 11395 events. 4184/11395 cut-off events. For 128360/130478 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 140166 event pairs, 1679 based on Foata normal form. 387/10596 useless extension candidates. Maximal degree in co-relation 61721. Up to 3988 conditions per place. [2021-03-25 19:55:18,165 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 436 selfloop transitions, 293 changer transitions 10/824 dead transitions. [2021-03-25 19:55:18,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 824 transitions, 15357 flow [2021-03-25 19:55:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-25 19:55:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-25 19:55:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 711 transitions. [2021-03-25 19:55:18,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2021-03-25 19:55:18,168 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 711 transitions. [2021-03-25 19:55:18,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 711 transitions. [2021-03-25 19:55:18,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:18,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 711 transitions. [2021-03-25 19:55:18,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 37.421052631578945) internal successors, (711), 19 states have internal predecessors, (711), 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) [2021-03-25 19:55:18,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 54.0) internal successors, (1080), 20 states have internal predecessors, (1080), 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) [2021-03-25 19:55:18,172 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 54.0) internal successors, (1080), 20 states have internal predecessors, (1080), 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) [2021-03-25 19:55:18,172 INFO L185 Difference]: Start difference. First operand has 110 places, 455 transitions, 7658 flow. Second operand 19 states and 711 transitions. [2021-03-25 19:55:18,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 824 transitions, 15357 flow [2021-03-25 19:55:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 824 transitions, 14629 flow, removed 349 selfloop flow, removed 3 redundant places. [2021-03-25 19:55:18,404 INFO L241 Difference]: Finished difference. Result has 134 places, 742 transitions, 13328 flow [2021-03-25 19:55:18,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7038, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13328, PETRI_PLACES=134, PETRI_TRANSITIONS=742} [2021-03-25 19:55:18,406 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 107 predicate places. [2021-03-25 19:55:18,406 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:18,406 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 742 transitions, 13328 flow [2021-03-25 19:55:18,406 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 742 transitions, 13328 flow [2021-03-25 19:55:18,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 742 transitions, 13328 flow [2021-03-25 19:55:19,938 INFO L129 PetriNetUnfolder]: 4006/11086 cut-off events. [2021-03-25 19:55:19,938 INFO L130 PetriNetUnfolder]: For 134008/135985 co-relation queries the response was YES. [2021-03-25 19:55:20,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63257 conditions, 11086 events. 4006/11086 cut-off events. For 134008/135985 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 136397 event pairs, 1615 based on Foata normal form. 70/10056 useless extension candidates. Maximal degree in co-relation 58303. Up to 3833 conditions per place. [2021-03-25 19:55:20,109 INFO L142 LiptonReduction]: Number of co-enabled transitions 3794 [2021-03-25 19:55:20,184 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:20,184 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:20,184 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1778 [2021-03-25 19:55:20,184 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 742 transitions, 13328 flow [2021-03-25 19:55:20,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 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) [2021-03-25 19:55:20,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:20,185 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:20,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-25 19:55:20,385 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:20,386 INFO L82 PathProgramCache]: Analyzing trace with hash -560002071, now seen corresponding path program 7 times [2021-03-25 19:55:20,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:20,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175229191] [2021-03-25 19:55:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:20,397 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:20,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,403 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:55:20,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,408 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:20,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,410 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:55:20,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,416 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:20,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175229191] [2021-03-25 19:55:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146429682] [2021-03-25 19:55:20,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:20,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-25 19:55:20,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:20,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:20,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:20,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:20,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:20,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:20,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 19:55:20,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 19:55:20,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:20,533 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:55:20,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:20,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:55:20,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:20,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:55:20,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:20,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-03-25 19:55:20,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640622347] [2021-03-25 19:55:20,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 19:55:20,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 19:55:20,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-25 19:55:20,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2021-03-25 19:55:20,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 742 transitions, 13328 flow. Second operand has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:20,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:20,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2021-03-25 19:55:20,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:31,234 INFO L129 PetriNetUnfolder]: 24414/47178 cut-off events. [2021-03-25 19:55:31,234 INFO L130 PetriNetUnfolder]: For 713297/713307 co-relation queries the response was YES. [2021-03-25 19:55:31,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 334171 conditions, 47178 events. 24414/47178 cut-off events. For 713297/713307 co-relation queries the response was YES. Maximal size of possible extension queue 3606. Compared 512217 event pairs, 4319 based on Foata normal form. 1917/49092 useless extension candidates. Maximal degree in co-relation 321087. Up to 17306 conditions per place. [2021-03-25 19:55:32,079 INFO L132 encePairwiseOnDemand]: 50/54 looper letters, 1535 selfloop transitions, 346 changer transitions 39/1929 dead transitions. [2021-03-25 19:55:32,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1929 transitions, 38509 flow [2021-03-25 19:55:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 19:55:32,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 19:55:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 358 transitions. [2021-03-25 19:55:32,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6026936026936027 [2021-03-25 19:55:32,081 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 358 transitions. [2021-03-25 19:55:32,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 358 transitions. [2021-03-25 19:55:32,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:55:32,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 358 transitions. [2021-03-25 19:55:32,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 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) [2021-03-25 19:55:32,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 54.0) internal successors, (648), 12 states have internal predecessors, (648), 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) [2021-03-25 19:55:32,083 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 54.0) internal successors, (648), 12 states have internal predecessors, (648), 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) [2021-03-25 19:55:32,084 INFO L185 Difference]: Start difference. First operand has 133 places, 742 transitions, 13328 flow. Second operand 11 states and 358 transitions. [2021-03-25 19:55:32,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 1929 transitions, 38509 flow [2021-03-25 19:55:36,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 1929 transitions, 34729 flow, removed 1877 selfloop flow, removed 2 redundant places. [2021-03-25 19:55:37,004 INFO L241 Difference]: Finished difference. Result has 148 places, 1037 transitions, 18617 flow [2021-03-25 19:55:37,005 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11947, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18617, PETRI_PLACES=148, PETRI_TRANSITIONS=1037} [2021-03-25 19:55:37,005 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 121 predicate places. [2021-03-25 19:55:37,005 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:55:37,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 1037 transitions, 18617 flow [2021-03-25 19:55:37,005 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 1037 transitions, 18617 flow [2021-03-25 19:55:37,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 148 places, 1037 transitions, 18617 flow [2021-03-25 19:55:41,279 INFO L129 PetriNetUnfolder]: 10451/27532 cut-off events. [2021-03-25 19:55:41,279 INFO L130 PetriNetUnfolder]: For 303528/309636 co-relation queries the response was YES. [2021-03-25 19:55:41,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159566 conditions, 27532 events. 10451/27532 cut-off events. For 303528/309636 co-relation queries the response was YES. Maximal size of possible extension queue 2984. Compared 370731 event pairs, 3695 based on Foata normal form. 276/25318 useless extension candidates. Maximal degree in co-relation 150290. Up to 9128 conditions per place. [2021-03-25 19:55:41,718 INFO L142 LiptonReduction]: Number of co-enabled transitions 5676 [2021-03-25 19:55:41,865 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:55:41,866 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:55:41,866 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4861 [2021-03-25 19:55:41,866 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 1037 transitions, 18617 flow [2021-03-25 19:55:41,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 19:55:41,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:55:41,867 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:55:42,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:42,075 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:55:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:55:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash 48671576, now seen corresponding path program 8 times [2021-03-25 19:55:42,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:55:42,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420676971] [2021-03-25 19:55:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:55:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:55:42,086 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:42,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,091 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:55:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:42,097 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:42,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,097 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:55:42,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,103 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:55:42,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:55:42,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420676971] [2021-03-25 19:55:42,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229814885] [2021-03-25 19:55:42,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:55:42,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 19:55:42,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:55:42,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2021-03-25 19:55:42,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:55:42,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:42,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:42,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:42,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:42,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:42,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:42,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:55:42,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 19:55:42,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,186 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-03-25 19:55:42,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 19:55:42,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:55:42,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 19:55:42,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:42,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:55:42,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:55:42,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:55:42,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 19:55:42,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:55:42,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:55:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:55:42,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:55:42,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-03-25 19:55:42,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298380804] [2021-03-25 19:55:42,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 19:55:42,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:55:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 19:55:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-25 19:55:42,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2021-03-25 19:55:42,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1037 transitions, 18617 flow. Second operand has 9 states, 9 states have (on average 28.88888888888889) internal successors, (260), 9 states have internal predecessors, (260), 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) [2021-03-25 19:55:42,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:55:42,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2021-03-25 19:55:42,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:55:59,045 INFO L129 PetriNetUnfolder]: 30495/61042 cut-off events. [2021-03-25 19:55:59,045 INFO L130 PetriNetUnfolder]: For 912102/912112 co-relation queries the response was YES. [2021-03-25 19:55:59,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 427106 conditions, 61042 events. 30495/61042 cut-off events. For 912102/912112 co-relation queries the response was YES. Maximal size of possible extension queue 4945. Compared 709544 event pairs, 3009 based on Foata normal form. 1924/62960 useless extension candidates. Maximal degree in co-relation 408277. Up to 22057 conditions per place. [2021-03-25 19:56:00,229 INFO L132 encePairwiseOnDemand]: 49/54 looper letters, 1704 selfloop transitions, 462 changer transitions 26/2201 dead transitions. [2021-03-25 19:56:00,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 2201 transitions, 43359 flow [2021-03-25 19:56:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 19:56:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 19:56:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 503 transitions. [2021-03-25 19:56:00,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6209876543209877 [2021-03-25 19:56:00,231 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 503 transitions. [2021-03-25 19:56:00,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 503 transitions. [2021-03-25 19:56:00,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:56:00,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 503 transitions. [2021-03-25 19:56:00,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 33.53333333333333) internal successors, (503), 15 states have internal predecessors, (503), 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) [2021-03-25 19:56:00,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 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) [2021-03-25 19:56:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 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) [2021-03-25 19:56:00,234 INFO L185 Difference]: Start difference. First operand has 148 places, 1037 transitions, 18617 flow. Second operand 15 states and 503 transitions. [2021-03-25 19:56:00,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 2201 transitions, 43359 flow [2021-03-25 19:56:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 2201 transitions, 43009 flow, removed 152 selfloop flow, removed 2 redundant places. [2021-03-25 19:56:06,174 INFO L241 Difference]: Finished difference. Result has 168 places, 1230 transitions, 23582 flow [2021-03-25 19:56:06,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=18455, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=23582, PETRI_PLACES=168, PETRI_TRANSITIONS=1230} [2021-03-25 19:56:06,175 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 141 predicate places. [2021-03-25 19:56:06,175 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:56:06,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 1230 transitions, 23582 flow [2021-03-25 19:56:06,176 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 1230 transitions, 23582 flow [2021-03-25 19:56:06,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 1230 transitions, 23582 flow [2021-03-25 19:56:12,579 INFO L129 PetriNetUnfolder]: 13869/35938 cut-off events. [2021-03-25 19:56:12,580 INFO L130 PetriNetUnfolder]: For 517595/526727 co-relation queries the response was YES. [2021-03-25 19:56:12,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237596 conditions, 35938 events. 13869/35938 cut-off events. For 517595/526727 co-relation queries the response was YES. Maximal size of possible extension queue 4014. Compared 495982 event pairs, 3113 based on Foata normal form. 474/33765 useless extension candidates. Maximal degree in co-relation 226308. Up to 12192 conditions per place. [2021-03-25 19:56:13,485 INFO L142 LiptonReduction]: Number of co-enabled transitions 6460 [2021-03-25 19:56:13,681 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:56:13,681 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:56:13,681 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7506 [2021-03-25 19:56:13,681 INFO L480 AbstractCegarLoop]: Abstraction has has 168 places, 1230 transitions, 23582 flow [2021-03-25 19:56:13,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 28.88888888888889) internal successors, (260), 9 states have internal predecessors, (260), 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) [2021-03-25 19:56:13,682 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:56:13,682 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:56:13,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:56:13,888 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:56:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:56:13,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2130644423, now seen corresponding path program 9 times [2021-03-25 19:56:13,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:56:13,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292789943] [2021-03-25 19:56:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:56:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:56:13,907 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:56:13,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,913 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:56:13,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:56:13,918 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:56:13,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,918 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:56:13,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:56:13,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 19:56:13,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292789943] [2021-03-25 19:56:13,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78949185] [2021-03-25 19:56:13,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:56:13,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-25 19:56:13,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:56:13,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 19:56:13,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:56:13,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:13,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:56:13,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:56:13,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:13,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:56:13,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:56:13,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:13,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:13,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:14,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:56:14,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:56:14,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:14,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:56:14,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:56:14,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:14,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:56:14,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:14,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:56:14,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:56:14,053 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:56:14,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:56:14,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:56:14,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:56:14,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 19:56:14,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:56:14,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:56:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:56:14,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:56:14,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-03-25 19:56:14,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593239842] [2021-03-25 19:56:14,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 19:56:14,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:56:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 19:56:14,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-03-25 19:56:14,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2021-03-25 19:56:14,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 1230 transitions, 23582 flow. Second operand has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 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) [2021-03-25 19:56:14,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:56:14,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2021-03-25 19:56:14,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:56:40,806 INFO L129 PetriNetUnfolder]: 42671/81338 cut-off events. [2021-03-25 19:56:40,806 INFO L130 PetriNetUnfolder]: For 1762183/1762193 co-relation queries the response was YES. [2021-03-25 19:56:41,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645230 conditions, 81338 events. 42671/81338 cut-off events. For 1762183/1762193 co-relation queries the response was YES. Maximal size of possible extension queue 6507. Compared 930297 event pairs, 1336 based on Foata normal form. 3632/84957 useless extension candidates. Maximal degree in co-relation 639948. Up to 31499 conditions per place. [2021-03-25 19:56:42,352 INFO L132 encePairwiseOnDemand]: 47/54 looper letters, 1521 selfloop transitions, 695 changer transitions 194/2419 dead transitions. [2021-03-25 19:56:42,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 2419 transitions, 50455 flow [2021-03-25 19:56:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-25 19:56:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-03-25 19:56:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 894 transitions. [2021-03-25 19:56:42,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5708812260536399 [2021-03-25 19:56:42,356 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 894 transitions. [2021-03-25 19:56:42,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 894 transitions. [2021-03-25 19:56:42,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:56:42,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 894 transitions. [2021-03-25 19:56:42,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 30.82758620689655) internal successors, (894), 29 states have internal predecessors, (894), 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) [2021-03-25 19:56:42,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 54.0) internal successors, (1620), 30 states have internal predecessors, (1620), 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) [2021-03-25 19:56:42,361 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 54.0) internal successors, (1620), 30 states have internal predecessors, (1620), 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) [2021-03-25 19:56:42,361 INFO L185 Difference]: Start difference. First operand has 168 places, 1230 transitions, 23582 flow. Second operand 29 states and 894 transitions. [2021-03-25 19:56:42,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 2419 transitions, 50455 flow [2021-03-25 19:57:00,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 2419 transitions, 46780 flow, removed 1634 selfloop flow, removed 7 redundant places. [2021-03-25 19:57:00,431 INFO L241 Difference]: Finished difference. Result has 202 places, 1478 transitions, 29820 flow [2021-03-25 19:57:00,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=21952, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=29820, PETRI_PLACES=202, PETRI_TRANSITIONS=1478} [2021-03-25 19:57:00,431 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 175 predicate places. [2021-03-25 19:57:00,432 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:57:00,432 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 1478 transitions, 29820 flow [2021-03-25 19:57:00,432 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 1478 transitions, 29820 flow [2021-03-25 19:57:00,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 199 places, 1478 transitions, 29820 flow [2021-03-25 19:57:11,564 INFO L129 PetriNetUnfolder]: 24836/58072 cut-off events. [2021-03-25 19:57:11,564 INFO L130 PetriNetUnfolder]: For 1449872/1461152 co-relation queries the response was YES. [2021-03-25 19:57:12,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466636 conditions, 58072 events. 24836/58072 cut-off events. For 1449872/1461152 co-relation queries the response was YES. Maximal size of possible extension queue 6217. Compared 788113 event pairs, 4445 based on Foata normal form. 1107/55830 useless extension candidates. Maximal degree in co-relation 465603. Up to 20423 conditions per place. [2021-03-25 19:57:13,860 INFO L142 LiptonReduction]: Number of co-enabled transitions 7242 [2021-03-25 19:57:14,638 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 19:57:14,638 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 19:57:14,638 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14207 [2021-03-25 19:57:14,639 INFO L480 AbstractCegarLoop]: Abstraction has has 199 places, 1478 transitions, 29857 flow [2021-03-25 19:57:14,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 27.0) internal successors, (270), 10 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) [2021-03-25 19:57:14,639 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:57:14,639 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:57:14,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-25 19:57:14,840 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:57:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:57:14,840 INFO L82 PathProgramCache]: Analyzing trace with hash 661366816, now seen corresponding path program 10 times [2021-03-25 19:57:14,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:57:14,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991589479] [2021-03-25 19:57:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:57:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:57:14,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:57:14,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:57:14,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:57:14,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:57:14,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:57:14,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991589479] [2021-03-25 19:57:14,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459955570] [2021-03-25 19:57:14,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:57:14,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-25 19:57:14,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 19:57:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 19:57:14,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 19:57:14,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:57:14,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:57:14,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:57:14,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:57:14,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:57:14,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:57:14,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:57:14,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 19:57:14,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,977 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.9 percent of original size [2021-03-25 19:57:14,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 19:57:14,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:57:14,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:57:14,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 19:57:14,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:57:14,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 19:57:14,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 19:57:14,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:14,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:14,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:14,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:14,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:14,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:57:15,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:57:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:57:15,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 19:57:15,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-03-25 19:57:15,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923496371] [2021-03-25 19:57:15,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 19:57:15,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:57:15,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 19:57:15,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-25 19:57:15,022 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 56 [2021-03-25 19:57:15,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1478 transitions, 29857 flow. Second operand has 9 states, 9 states have (on average 37.22222222222222) internal successors, (335), 9 states have internal predecessors, (335), 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) [2021-03-25 19:57:15,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:57:15,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 56 [2021-03-25 19:57:15,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:57:37,896 INFO L129 PetriNetUnfolder]: 25145/57486 cut-off events. [2021-03-25 19:57:37,897 INFO L130 PetriNetUnfolder]: For 1600374/1609981 co-relation queries the response was YES. [2021-03-25 19:57:38,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491495 conditions, 57486 events. 25145/57486 cut-off events. For 1600374/1609981 co-relation queries the response was YES. Maximal size of possible extension queue 6136. Compared 762208 event pairs, 4979 based on Foata normal form. 1367/56412 useless extension candidates. Maximal degree in co-relation 490080. Up to 20712 conditions per place. [2021-03-25 19:57:39,327 INFO L132 encePairwiseOnDemand]: 50/56 looper letters, 794 selfloop transitions, 769 changer transitions 11/1810 dead transitions. [2021-03-25 19:57:39,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1810 transitions, 40062 flow [2021-03-25 19:57:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 19:57:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 19:57:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 576 transitions. [2021-03-25 19:57:39,328 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2021-03-25 19:57:39,328 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 576 transitions. [2021-03-25 19:57:39,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 576 transitions. [2021-03-25 19:57:39,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:57:39,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 576 transitions. [2021-03-25 19:57:39,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.4) internal successors, (576), 15 states have internal predecessors, (576), 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) [2021-03-25 19:57:39,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 56.0) internal successors, (896), 16 states have internal predecessors, (896), 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) [2021-03-25 19:57:39,330 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 56.0) internal successors, (896), 16 states have internal predecessors, (896), 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) [2021-03-25 19:57:39,331 INFO L185 Difference]: Start difference. First operand has 199 places, 1478 transitions, 29857 flow. Second operand 15 states and 576 transitions. [2021-03-25 19:57:39,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 1810 transitions, 40062 flow [2021-03-25 19:58:00,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1810 transitions, 38750 flow, removed 604 selfloop flow, removed 5 redundant places. [2021-03-25 19:58:00,956 INFO L241 Difference]: Finished difference. Result has 211 places, 1699 transitions, 35408 flow [2021-03-25 19:58:00,958 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=27857, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=816, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=35408, PETRI_PLACES=211, PETRI_TRANSITIONS=1699} [2021-03-25 19:58:00,958 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 184 predicate places. [2021-03-25 19:58:00,958 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:58:00,958 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 1699 transitions, 35408 flow [2021-03-25 19:58:00,958 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 1699 transitions, 35408 flow [2021-03-25 19:58:00,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 210 places, 1699 transitions, 35408 flow [2021-03-25 19:58:14,152 INFO L129 PetriNetUnfolder]: 24185/54960 cut-off events. [2021-03-25 19:58:14,152 INFO L130 PetriNetUnfolder]: For 1416483/1428407 co-relation queries the response was YES. [2021-03-25 19:58:15,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463321 conditions, 54960 events. 24185/54960 cut-off events. For 1416483/1428407 co-relation queries the response was YES. Maximal size of possible extension queue 5922. Compared 727436 event pairs, 4278 based on Foata normal form. 1387/53415 useless extension candidates. Maximal degree in co-relation 456049. Up to 19770 conditions per place. [2021-03-25 19:58:16,055 INFO L142 LiptonReduction]: Number of co-enabled transitions 8044 [2021-03-25 19:58:16,457 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:58:16,457 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:58:16,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15499 [2021-03-25 19:58:16,458 INFO L480 AbstractCegarLoop]: Abstraction has has 210 places, 1699 transitions, 35408 flow [2021-03-25 19:58:16,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 37.22222222222222) internal successors, (335), 9 states have internal predecessors, (335), 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) [2021-03-25 19:58:16,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:58:16,458 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:58:16,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 19:58:16,671 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:58:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:58:16,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1833234172, now seen corresponding path program 1 times [2021-03-25 19:58:16,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:58:16,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634860448] [2021-03-25 19:58:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:58:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:58:16,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:58:16,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:58:16,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:58:16,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 19:58:16,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:58:16,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 19:58:16,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:58:16,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:58:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-25 19:58:16,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634860448] [2021-03-25 19:58:16,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:58:16,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:58:16,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582657503] [2021-03-25 19:58:16,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:58:16,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:58:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:58:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:58:16,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 56 [2021-03-25 19:58:16,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1699 transitions, 35408 flow. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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) [2021-03-25 19:58:16,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:58:16,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 56 [2021-03-25 19:58:16,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:58:37,754 INFO L129 PetriNetUnfolder]: 25152/57511 cut-off events. [2021-03-25 19:58:37,754 INFO L130 PetriNetUnfolder]: For 1569708/1579158 co-relation queries the response was YES. [2021-03-25 19:58:38,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499172 conditions, 57511 events. 25152/57511 cut-off events. For 1569708/1579158 co-relation queries the response was YES. Maximal size of possible extension queue 6153. Compared 762242 event pairs, 4934 based on Foata normal form. 987/56070 useless extension candidates. Maximal degree in co-relation 491324. Up to 20635 conditions per place. [2021-03-25 19:58:39,205 INFO L132 encePairwiseOnDemand]: 51/56 looper letters, 1024 selfloop transitions, 506 changer transitions 4/1769 dead transitions. [2021-03-25 19:58:39,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1769 transitions, 40345 flow [2021-03-25 19:58:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 19:58:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 19:58:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2021-03-25 19:58:39,206 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6875 [2021-03-25 19:58:39,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 231 transitions. [2021-03-25 19:58:39,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 231 transitions. [2021-03-25 19:58:39,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:58:39,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 231 transitions. [2021-03-25 19:58:39,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2021-03-25 19:58:39,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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) [2021-03-25 19:58:39,207 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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) [2021-03-25 19:58:39,207 INFO L185 Difference]: Start difference. First operand has 210 places, 1699 transitions, 35408 flow. Second operand 6 states and 231 transitions. [2021-03-25 19:58:39,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1769 transitions, 40345 flow [2021-03-25 19:58:55,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1769 transitions, 39296 flow, removed 514 selfloop flow, removed 2 redundant places. [2021-03-25 19:58:55,462 INFO L241 Difference]: Finished difference. Result has 215 places, 1691 transitions, 35694 flow [2021-03-25 19:58:55,463 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=34261, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=506, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=35694, PETRI_PLACES=215, PETRI_TRANSITIONS=1691} [2021-03-25 19:58:55,464 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 188 predicate places. [2021-03-25 19:58:55,464 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 19:58:55,464 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 1691 transitions, 35694 flow [2021-03-25 19:58:55,464 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 1691 transitions, 35694 flow [2021-03-25 19:58:55,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 213 places, 1691 transitions, 35694 flow [2021-03-25 19:59:08,856 INFO L129 PetriNetUnfolder]: 24121/54774 cut-off events. [2021-03-25 19:59:08,856 INFO L130 PetriNetUnfolder]: For 1483327/1495107 co-relation queries the response was YES. [2021-03-25 19:59:09,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467197 conditions, 54774 events. 24121/54774 cut-off events. For 1483327/1495107 co-relation queries the response was YES. Maximal size of possible extension queue 5931. Compared 724409 event pairs, 4239 based on Foata normal form. 1371/53232 useless extension candidates. Maximal degree in co-relation 466680. Up to 19630 conditions per place. [2021-03-25 19:59:10,632 INFO L142 LiptonReduction]: Number of co-enabled transitions 8030 [2021-03-25 19:59:11,002 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 19:59:11,003 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 19:59:11,003 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15539 [2021-03-25 19:59:11,003 INFO L480 AbstractCegarLoop]: Abstraction has has 213 places, 1691 transitions, 35694 flow [2021-03-25 19:59:11,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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) [2021-03-25 19:59:11,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 19:59:11,003 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 19:59:11,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 19:59:11,003 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 19:59:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 19:59:11,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1389893777, now seen corresponding path program 1 times [2021-03-25 19:59:11,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 19:59:11,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932604031] [2021-03-25 19:59:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 19:59:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 19:59:11,012 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:59:11,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:59:11,018 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 19:59:11,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 19:59:11,024 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 19:59:11,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 19:59:11,032 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-25 19:59:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:59:11,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 19:59:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 19:59:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-25 19:59:11,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932604031] [2021-03-25 19:59:11,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 19:59:11,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 19:59:11,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414157698] [2021-03-25 19:59:11,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 19:59:11,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 19:59:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 19:59:11,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 19:59:11,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 56 [2021-03-25 19:59:11,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 1691 transitions, 35694 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2021-03-25 19:59:11,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 19:59:11,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 56 [2021-03-25 19:59:11,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 19:59:43,970 INFO L129 PetriNetUnfolder]: 40269/77701 cut-off events. [2021-03-25 19:59:43,970 INFO L130 PetriNetUnfolder]: For 2275951/2275961 co-relation queries the response was YES. [2021-03-25 19:59:45,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 719417 conditions, 77701 events. 40269/77701 cut-off events. For 2275951/2275961 co-relation queries the response was YES. Maximal size of possible extension queue 6444. Compared 896360 event pairs, 8408 based on Foata normal form. 8/77708 useless extension candidates. Maximal degree in co-relation 719173. Up to 44208 conditions per place. [2021-03-25 19:59:45,974 INFO L132 encePairwiseOnDemand]: 51/56 looper letters, 1975 selfloop transitions, 126 changer transitions 12/2122 dead transitions. [2021-03-25 19:59:45,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 2122 transitions, 49746 flow [2021-03-25 19:59:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 19:59:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 19:59:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2021-03-25 19:59:45,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2021-03-25 19:59:45,975 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 191 transitions. [2021-03-25 19:59:45,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 191 transitions. [2021-03-25 19:59:45,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 19:59:45,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 191 transitions. [2021-03-25 19:59:45,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2021-03-25 19:59:45,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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) [2021-03-25 19:59:45,976 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 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) [2021-03-25 19:59:45,976 INFO L185 Difference]: Start difference. First operand has 213 places, 1691 transitions, 35694 flow. Second operand 6 states and 191 transitions. [2021-03-25 19:59:45,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 2122 transitions, 49746 flow [2021-03-25 20:00:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 2122 transitions, 48910 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-03-25 20:00:22,612 INFO L241 Difference]: Finished difference. Result has 216 places, 1688 transitions, 35192 flow [2021-03-25 20:00:22,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=34978, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=35192, PETRI_PLACES=216, PETRI_TRANSITIONS=1688} [2021-03-25 20:00:22,613 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 189 predicate places. [2021-03-25 20:00:22,613 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 20:00:22,613 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 1688 transitions, 35192 flow [2021-03-25 20:00:22,614 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 1688 transitions, 35192 flow [2021-03-25 20:00:22,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 214 places, 1688 transitions, 35192 flow