/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 03:55:41,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 03:55:41,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 03:55:41,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 03:55:41,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 03:55:41,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 03:55:41,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 03:55:41,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 03:55:41,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 03:55:41,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 03:55:41,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 03:55:41,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 03:55:41,379 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 03:55:41,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 03:55:41,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 03:55:41,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 03:55:41,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 03:55:41,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 03:55:41,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 03:55:41,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 03:55:41,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 03:55:41,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 03:55:41,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 03:55:41,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 03:55:41,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 03:55:41,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 03:55:41,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 03:55:41,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 03:55:41,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 03:55:41,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:55:41,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 03:55:41,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 03:55:41,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 03:55:41,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 03:55:41,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 03:55:41,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 03:55:41,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 03:55:41,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 03:55:41,386 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 03:55:41,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 03:55:41,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 03:55:41,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 03:55:41,856 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-29 03:55:41,858 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-29 03:55:41,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl [2021-04-29 03:55:41,859 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl' [2021-04-29 03:55:41,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 03:55:41,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-29 03:55:41,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:41,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 03:55:41,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 03:55:41,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:41,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:41,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 03:55:42,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 03:55:42,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 03:55:42,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 03:55:42,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... [2021-04-29 03:55:42,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 03:55:42,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 03:55:42,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 03:55:42,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 03:55:42,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 03:55:42,160 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-04-29 03:55:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-04-29 03:55:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-04-29 03:55:42,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-04-29 03:55:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-04-29 03:55:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-04-29 03:55:42,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-04-29 03:55:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-04-29 03:55:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-04-29 03:55:42,167 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-04-29 03:55:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-04-29 03:55:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-04-29 03:55:42,168 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-04-29 03:55:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-04-29 03:55:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-04-29 03:55:42,169 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-04-29 03:55:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-04-29 03:55:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-04-29 03:55:42,173 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-04-29 03:55:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 03:55:42,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 03:55:42,175 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-04-29 03:55:42,176 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-04-29 03:55:42,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-04-29 03:55:42,179 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-04-29 03:55:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-04-29 03:55:42,180 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-04-29 03:55:42,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-04-29 03:55:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-04-29 03:55:42,183 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-04-29 03:55:42,183 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-04-29 03:55:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-04-29 03:55:42,184 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-04-29 03:55:42,191 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 03:55:42,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 03:55:42,403 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-29 03:55:42,405 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:42 BoogieIcfgContainer [2021-04-29 03:55:42,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 03:55:42,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 03:55:42,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 03:55:42,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 03:55:42,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.04 03:55:41" (1/2) ... [2021-04-29 03:55:42,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62888184 and model type example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 03:55:42, skipping insertion in model container [2021-04-29 03:55:42,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 03:55:42" (2/2) ... [2021-04-29 03:55:42,413 INFO L111 eAbstractionObserver]: Analyzing ICFG example_10.bpl [2021-04-29 03:55:42,421 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 03:55:42,426 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 03:55:42,427 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 03:55:42,676 INFO L149 ThreadInstanceAdder]: Constructed 100 joinOtherThreadTransitions. [2021-04-29 03:55:42,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-04-29 03:55:42,731 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 03:55:42,732 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 03:55:42,732 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 03:55:42,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 03:55:42,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 03:55:42,733 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 03:55:42,733 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 03:55:42,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 03:55:42,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 143 transitions, 636 flow [2021-04-29 03:55:43,687 INFO L129 PetriNetUnfolder]: 4097/5153 cut-off events. [2021-04-29 03:55:43,688 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-04-29 03:55:43,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 5153 events. 4097/5153 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20936 event pairs, 0 based on Foata normal form. 0/5152 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2021-04-29 03:55:43,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 143 transitions, 636 flow [2021-04-29 03:55:43,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 131 transitions, 592 flow [2021-04-29 03:55:43,805 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:43,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 131 transitions, 592 flow [2021-04-29 03:55:43,829 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 131 transitions, 592 flow [2021-04-29 03:55:43,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 131 transitions, 592 flow [2021-04-29 03:55:44,413 INFO L129 PetriNetUnfolder]: 4097/5151 cut-off events. [2021-04-29 03:55:44,413 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-04-29 03:55:44,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 5151 events. 4097/5151 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20104 event pairs, 0 based on Foata normal form. 0/5151 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2021-04-29 03:55:44,624 INFO L146 LiptonReduction]: Number of co-enabled transitions 3780 [2021-04-29 03:55:44,890 INFO L158 LiptonReduction]: Checked pairs total: 1035 [2021-04-29 03:55:44,890 INFO L160 LiptonReduction]: Total number of compositions: 10 [2021-04-29 03:55:44,893 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1089 [2021-04-29 03:55:45,406 INFO L129 PetriNetUnfolder]: 4097/5150 cut-off events. [2021-04-29 03:55:45,406 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-04-29 03:55:45,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:45,408 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:45,408 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash 471377576, now seen corresponding path program 1 times [2021-04-29 03:55:45,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:45,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512160293] [2021-04-29 03:55:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:45,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:45,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:45,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:45,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:45,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:45,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512160293] [2021-04-29 03:55:45,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:45,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:45,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156087388] [2021-04-29 03:55:45,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:45,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:45,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:45,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:45,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:45,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 131 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:45,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:45,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:45,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:46,384 INFO L129 PetriNetUnfolder]: 3764/4772 cut-off events. [2021-04-29 03:55:46,385 INFO L130 PetriNetUnfolder]: For 5812/5812 co-relation queries the response was YES. [2021-04-29 03:55:46,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 4772 events. 3764/4772 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 21568 event pairs, 0 based on Foata normal form. 46/4808 useless extension candidates. Maximal degree in co-relation 4728. Up to 1260 conditions per place. [2021-04-29 03:55:46,464 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 7 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2021-04-29 03:55:46,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 128 transitions, 593 flow [2021-04-29 03:55:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:46,482 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:46,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:46,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:46,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:46,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:46,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:46,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:46,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:46,506 INFO L185 Difference]: Start difference. First operand has 72 places, 131 transitions, 592 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:46,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 128 transitions, 593 flow [2021-04-29 03:55:46,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 128 transitions, 379 flow, removed 0 selfloop flow, removed 20 redundant places. [2021-04-29 03:55:46,585 INFO L241 Difference]: Finished difference. Result has 54 places, 128 transitions, 365 flow [2021-04-29 03:55:46,588 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=54, PETRI_TRANSITIONS=128} [2021-04-29 03:55:46,590 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -18 predicate places. [2021-04-29 03:55:46,590 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:46,590 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 128 transitions, 365 flow [2021-04-29 03:55:46,591 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 128 transitions, 365 flow [2021-04-29 03:55:46,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 128 transitions, 365 flow [2021-04-29 03:55:46,974 INFO L129 PetriNetUnfolder]: 3764/4772 cut-off events. [2021-04-29 03:55:46,974 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:46,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 4772 events. 3764/4772 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 19093 event pairs, 0 based on Foata normal form. 0/4762 useless extension candidates. Maximal degree in co-relation 4774. Up to 1260 conditions per place. [2021-04-29 03:55:47,054 INFO L146 LiptonReduction]: Number of co-enabled transitions 3672 [2021-04-29 03:55:47,095 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:47,096 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:47,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 506 [2021-04-29 03:55:47,099 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 128 transitions, 365 flow [2021-04-29 03:55:47,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:47,101 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:47,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 03:55:47,101 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:47,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash 806041250, now seen corresponding path program 1 times [2021-04-29 03:55:47,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:47,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596438595] [2021-04-29 03:55:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:47,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:47,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:47,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:47,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596438595] [2021-04-29 03:55:47,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:47,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:47,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492107613] [2021-04-29 03:55:47,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:47,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:47,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:47,157 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:47,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 128 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:47,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:47,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:47,510 INFO L129 PetriNetUnfolder]: 3028/3915 cut-off events. [2021-04-29 03:55:47,510 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2021-04-29 03:55:47,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4312 conditions, 3915 events. 3028/3915 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 18279 event pairs, 0 based on Foata normal form. 93/3998 useless extension candidates. Maximal degree in co-relation 4300. Up to 1260 conditions per place. [2021-04-29 03:55:47,544 INFO L132 encePairwiseOnDemand]: 148/153 looper letters, 6 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-04-29 03:55:47,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 124 transitions, 367 flow [2021-04-29 03:55:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:47,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:47,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:47,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:47,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:47,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,557 INFO L185 Difference]: Start difference. First operand has 54 places, 128 transitions, 365 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:47,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 124 transitions, 367 flow [2021-04-29 03:55:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 124 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:47,565 INFO L241 Difference]: Finished difference. Result has 55 places, 124 transitions, 354 flow [2021-04-29 03:55:47,565 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=55, PETRI_TRANSITIONS=124} [2021-04-29 03:55:47,566 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -17 predicate places. [2021-04-29 03:55:47,566 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:47,567 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 124 transitions, 354 flow [2021-04-29 03:55:47,567 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 124 transitions, 354 flow [2021-04-29 03:55:47,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 124 transitions, 354 flow [2021-04-29 03:55:47,817 INFO L129 PetriNetUnfolder]: 3028/3915 cut-off events. [2021-04-29 03:55:47,817 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:47,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 3915 events. 3028/3915 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 15967 event pairs, 0 based on Foata normal form. 0/3905 useless extension candidates. Maximal degree in co-relation 3918. Up to 1260 conditions per place. [2021-04-29 03:55:47,863 INFO L146 LiptonReduction]: Number of co-enabled transitions 3528 [2021-04-29 03:55:47,903 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:47,903 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:47,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 337 [2021-04-29 03:55:47,907 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 124 transitions, 354 flow [2021-04-29 03:55:47,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:47,908 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:47,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 03:55:47,909 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1044602240, now seen corresponding path program 1 times [2021-04-29 03:55:47,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:47,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193912249] [2021-04-29 03:55:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:47,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:47,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:47,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:47,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193912249] [2021-04-29 03:55:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:47,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:47,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220416769] [2021-04-29 03:55:47,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:47,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:47,991 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:47,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 124 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:47,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:47,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:47,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:48,142 INFO L129 PetriNetUnfolder]: 1208/1674 cut-off events. [2021-04-29 03:55:48,143 INFO L130 PetriNetUnfolder]: For 390/390 co-relation queries the response was YES. [2021-04-29 03:55:48,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1674 events. 1208/1674 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7615 event pairs, 0 based on Foata normal form. 344/2008 useless extension candidates. Maximal degree in co-relation 1724. Up to 504 conditions per place. [2021-04-29 03:55:48,159 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 3 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2021-04-29 03:55:48,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 117 transitions, 341 flow [2021-04-29 03:55:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:48,162 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:48,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:48,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,168 INFO L185 Difference]: Start difference. First operand has 55 places, 124 transitions, 354 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:48,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 117 transitions, 341 flow [2021-04-29 03:55:48,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 117 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:48,175 INFO L241 Difference]: Finished difference. Result has 56 places, 117 transitions, 334 flow [2021-04-29 03:55:48,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=56, PETRI_TRANSITIONS=117} [2021-04-29 03:55:48,176 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2021-04-29 03:55:48,176 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:48,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 117 transitions, 334 flow [2021-04-29 03:55:48,178 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 117 transitions, 334 flow [2021-04-29 03:55:48,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 117 transitions, 334 flow [2021-04-29 03:55:48,282 INFO L129 PetriNetUnfolder]: 1208/1674 cut-off events. [2021-04-29 03:55:48,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:48,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 1674 events. 1208/1674 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6546 event pairs, 0 based on Foata normal form. 0/1664 useless extension candidates. Maximal degree in co-relation 1678. Up to 504 conditions per place. [2021-04-29 03:55:48,307 INFO L146 LiptonReduction]: Number of co-enabled transitions 3276 [2021-04-29 03:55:48,322 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:48,322 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:48,322 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 146 [2021-04-29 03:55:48,330 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 117 transitions, 334 flow [2021-04-29 03:55:48,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:48,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:48,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 03:55:48,332 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1808971416, now seen corresponding path program 1 times [2021-04-29 03:55:48,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:48,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838428265] [2021-04-29 03:55:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:48,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:48,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:48,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838428265] [2021-04-29 03:55:48,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:48,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:48,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519826150] [2021-04-29 03:55:48,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:48,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:48,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:48,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 117 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:48,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:48,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:48,491 INFO L129 PetriNetUnfolder]: 524/807 cut-off events. [2021-04-29 03:55:48,491 INFO L130 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2021-04-29 03:55:48,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 807 events. 524/807 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3428 event pairs, 0 based on Foata normal form. 133/930 useless extension candidates. Maximal degree in co-relation 858. Up to 168 conditions per place. [2021-04-29 03:55:48,498 INFO L132 encePairwiseOnDemand]: 146/153 looper letters, 4 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2021-04-29 03:55:48,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 326 flow [2021-04-29 03:55:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:48,500 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:48,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:48,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,505 INFO L185 Difference]: Start difference. First operand has 56 places, 117 transitions, 334 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 326 flow [2021-04-29 03:55:48,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:48,511 INFO L241 Difference]: Finished difference. Result has 57 places, 111 transitions, 317 flow [2021-04-29 03:55:48,512 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=111} [2021-04-29 03:55:48,512 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -15 predicate places. [2021-04-29 03:55:48,512 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:48,512 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 111 transitions, 317 flow [2021-04-29 03:55:48,513 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 111 transitions, 317 flow [2021-04-29 03:55:48,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 111 transitions, 317 flow [2021-04-29 03:55:48,568 INFO L129 PetriNetUnfolder]: 524/807 cut-off events. [2021-04-29 03:55:48,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:48,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 807 events. 524/807 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3060 event pairs, 0 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 812. Up to 168 conditions per place. [2021-04-29 03:55:48,579 INFO L146 LiptonReduction]: Number of co-enabled transitions 3060 [2021-04-29 03:55:48,590 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:48,591 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:48,591 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-04-29 03:55:48,596 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 111 transitions, 317 flow [2021-04-29 03:55:48,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:48,597 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:48,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 03:55:48,597 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1614405650, now seen corresponding path program 1 times [2021-04-29 03:55:48,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:48,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117676890] [2021-04-29 03:55:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:48,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:48,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:48,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117676890] [2021-04-29 03:55:48,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:48,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:48,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234446348] [2021-04-29 03:55:48,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:48,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:48,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:48,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:48,659 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:48,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 111 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:48,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:48,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:48,742 INFO L129 PetriNetUnfolder]: 499/776 cut-off events. [2021-04-29 03:55:48,742 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-04-29 03:55:48,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 776 events. 499/776 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3418 event pairs, 0 based on Foata normal form. 6/772 useless extension candidates. Maximal degree in co-relation 862. Up to 168 conditions per place. [2021-04-29 03:55:48,749 INFO L132 encePairwiseOnDemand]: 150/153 looper letters, 8 selfloop transitions, 1 changer transitions 0/109 dead transitions. [2021-04-29 03:55:48,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 329 flow [2021-04-29 03:55:48,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:48,751 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:48,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:48,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,756 INFO L185 Difference]: Start difference. First operand has 57 places, 111 transitions, 317 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 329 flow [2021-04-29 03:55:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:48,760 INFO L241 Difference]: Finished difference. Result has 58 places, 109 transitions, 312 flow [2021-04-29 03:55:48,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=58, PETRI_TRANSITIONS=109} [2021-04-29 03:55:48,761 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2021-04-29 03:55:48,761 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:48,761 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 109 transitions, 312 flow [2021-04-29 03:55:48,761 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 109 transitions, 312 flow [2021-04-29 03:55:48,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 109 transitions, 312 flow [2021-04-29 03:55:48,816 INFO L129 PetriNetUnfolder]: 499/776 cut-off events. [2021-04-29 03:55:48,816 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:48,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 776 events. 499/776 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2955 event pairs, 0 based on Foata normal form. 0/766 useless extension candidates. Maximal degree in co-relation 784. Up to 168 conditions per place. [2021-04-29 03:55:48,827 INFO L146 LiptonReduction]: Number of co-enabled transitions 2988 [2021-04-29 03:55:48,839 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:48,839 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:48,840 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-04-29 03:55:48,842 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 109 transitions, 312 flow [2021-04-29 03:55:48,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:48,843 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:48,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 03:55:48,844 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:48,844 INFO L82 PathProgramCache]: Analyzing trace with hash 3070718, now seen corresponding path program 1 times [2021-04-29 03:55:48,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:48,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275410047] [2021-04-29 03:55:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:48,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:48,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:48,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275410047] [2021-04-29 03:55:48,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:48,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:48,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816923467] [2021-04-29 03:55:48,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:48,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:48,870 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:48,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 109 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:48,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:48,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:48,907 INFO L129 PetriNetUnfolder]: 109/222 cut-off events. [2021-04-29 03:55:48,908 INFO L130 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2021-04-29 03:55:48,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 222 events. 109/222 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 805 event pairs, 0 based on Foata normal form. 81/293 useless extension candidates. Maximal degree in co-relation 232. Up to 45 conditions per place. [2021-04-29 03:55:48,910 INFO L132 encePairwiseOnDemand]: 143/153 looper letters, 1 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2021-04-29 03:55:48,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 262 flow [2021-04-29 03:55:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-04-29 03:55:48,912 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-04-29 03:55:48,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:48,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-04-29 03:55:48,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,917 INFO L185 Difference]: Start difference. First operand has 58 places, 109 transitions, 312 flow. Second operand 3 states and 437 transitions. [2021-04-29 03:55:48,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 262 flow [2021-04-29 03:55:48,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 91 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:48,920 INFO L241 Difference]: Finished difference. Result has 59 places, 91 transitions, 259 flow [2021-04-29 03:55:48,921 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=59, PETRI_TRANSITIONS=91} [2021-04-29 03:55:48,921 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2021-04-29 03:55:48,921 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:48,921 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 91 transitions, 259 flow [2021-04-29 03:55:48,922 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 91 transitions, 259 flow [2021-04-29 03:55:48,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 91 transitions, 259 flow [2021-04-29 03:55:48,940 INFO L129 PetriNetUnfolder]: 109/222 cut-off events. [2021-04-29 03:55:48,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:48,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 222 events. 109/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 689 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 231. Up to 45 conditions per place. [2021-04-29 03:55:48,944 INFO L146 LiptonReduction]: Number of co-enabled transitions 1984 [2021-04-29 03:55:48,952 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:48,952 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:48,953 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-29 03:55:48,955 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 91 transitions, 259 flow [2021-04-29 03:55:48,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:48,956 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:48,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 03:55:48,956 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 331932600, now seen corresponding path program 1 times [2021-04-29 03:55:48,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:48,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510446775] [2021-04-29 03:55:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:48,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:48,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:48,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:48,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510446775] [2021-04-29 03:55:48,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:48,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141156805] [2021-04-29 03:55:48,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:48,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:48,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:48,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:48,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 91 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:48,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:48,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:48,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:49,002 INFO L129 PetriNetUnfolder]: 17/74 cut-off events. [2021-04-29 03:55:49,003 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-04-29 03:55:49,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 74 events. 17/74 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 0 based on Foata normal form. 24/88 useless extension candidates. Maximal degree in co-relation 85. Up to 10 conditions per place. [2021-04-29 03:55:49,004 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 1 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2021-04-29 03:55:49,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 176 flow [2021-04-29 03:55:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:49,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2021-04-29 03:55:49,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9498910675381264 [2021-04-29 03:55:49,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2021-04-29 03:55:49,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2021-04-29 03:55:49,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:49,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2021-04-29 03:55:49,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,011 INFO L185 Difference]: Start difference. First operand has 59 places, 91 transitions, 259 flow. Second operand 3 states and 436 transitions. [2021-04-29 03:55:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 176 flow [2021-04-29 03:55:49,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:49,014 INFO L241 Difference]: Finished difference. Result has 60 places, 62 transitions, 173 flow [2021-04-29 03:55:49,014 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2021-04-29 03:55:49,015 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2021-04-29 03:55:49,015 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:49,015 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 62 transitions, 173 flow [2021-04-29 03:55:49,015 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 62 transitions, 173 flow [2021-04-29 03:55:49,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 62 transitions, 173 flow [2021-04-29 03:55:49,024 INFO L129 PetriNetUnfolder]: 17/74 cut-off events. [2021-04-29 03:55:49,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:49,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 74 events. 17/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 153 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 84. Up to 10 conditions per place. [2021-04-29 03:55:49,026 INFO L146 LiptonReduction]: Number of co-enabled transitions 1264 [2021-04-29 03:55:49,031 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:49,031 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:49,031 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-04-29 03:55:49,033 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 173 flow [2021-04-29 03:55:49,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:49,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:49,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 03:55:49,034 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash -306892766, now seen corresponding path program 1 times [2021-04-29 03:55:49,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:49,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719509996] [2021-04-29 03:55:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:49,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:49,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:49,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:49,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 03:55:49,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:49,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:49,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719509996] [2021-04-29 03:55:49,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:49,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 03:55:49,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646431323] [2021-04-29 03:55:49,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 03:55:49,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 03:55:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 03:55:49,062 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-04-29 03:55:49,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:49,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-04-29 03:55:49,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:55:49,076 INFO L129 PetriNetUnfolder]: 1/43 cut-off events. [2021-04-29 03:55:49,076 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-04-29 03:55:49,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 43 events. 1/43 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 6/39 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-04-29 03:55:49,077 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 1 selfloop transitions, 1 changer transitions 2/43 dead transitions. [2021-04-29 03:55:49,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 120 flow [2021-04-29 03:55:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 03:55:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 03:55:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2021-04-29 03:55:49,080 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9433551198257081 [2021-04-29 03:55:49,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2021-04-29 03:55:49,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2021-04-29 03:55:49,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:55:49,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2021-04-29 03:55:49,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,084 INFO L185 Difference]: Start difference. First operand has 60 places, 62 transitions, 173 flow. Second operand 3 states and 433 transitions. [2021-04-29 03:55:49,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 120 flow [2021-04-29 03:55:49,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 43 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:55:49,086 INFO L241 Difference]: Finished difference. Result has 61 places, 41 transitions, 113 flow [2021-04-29 03:55:49,086 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2021-04-29 03:55:49,086 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2021-04-29 03:55:49,087 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:55:49,087 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 41 transitions, 113 flow [2021-04-29 03:55:49,087 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 41 transitions, 113 flow [2021-04-29 03:55:49,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 41 transitions, 113 flow [2021-04-29 03:55:49,092 INFO L129 PetriNetUnfolder]: 1/41 cut-off events. [2021-04-29 03:55:49,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:55:49,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-04-29 03:55:49,094 INFO L146 LiptonReduction]: Number of co-enabled transitions 680 [2021-04-29 03:55:49,096 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:55:49,096 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:55:49,096 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-04-29 03:55:49,098 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 113 flow [2021-04-29 03:55:49,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,099 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:55:49,099 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:55:49,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 03:55:49,099 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:55:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:55:49,100 INFO L82 PathProgramCache]: Analyzing trace with hash -554193388, now seen corresponding path program 1 times [2021-04-29 03:55:49,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:55:49,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803406129] [2021-04-29 03:55:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:55:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:55:49,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:49,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:55:49,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:55:49,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 03:55:49,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-04-29 03:55:49,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-29 03:55:49,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-04-29 03:55:49,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-04-29 03:55:49,299 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-04-29 03:55:49,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-04-29 03:55:49,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-04-29 03:55:49,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-04-29 03:55:49,368 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-04-29 03:55:49,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-29 03:55:49,413 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-04-29 03:55:49,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-04-29 03:55:49,468 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-04-29 03:55:49,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-29 03:55:49,531 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-04-29 03:55:49,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-04-29 03:55:49,610 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-04-29 03:55:49,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-29 03:55:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:55:49,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803406129] [2021-04-29 03:55:49,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:55:49,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-29 03:55:49,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297004622] [2021-04-29 03:55:49,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-29 03:55:49,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:55:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-29 03:55:49,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-29 03:55:49,686 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-04-29 03:55:49,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 113 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:55:49,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:55:49,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-04-29 03:55:49,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:56:21,380 INFO L129 PetriNetUnfolder]: 238288/301623 cut-off events. [2021-04-29 03:56:21,380 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 03:56:22,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 597769 conditions, 301623 events. 238288/301623 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18260. Compared 1892077 event pairs, 40825 based on Foata normal form. 1/181356 useless extension candidates. Maximal degree in co-relation 597759. Up to 104977 conditions per place. [2021-04-29 03:56:24,068 INFO L132 encePairwiseOnDemand]: 134/153 looper letters, 86 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2021-04-29 03:56:24,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 126 transitions, 491 flow [2021-04-29 03:56:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-29 03:56:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-04-29 03:56:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1677 transitions. [2021-04-29 03:56:24,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9133986928104575 [2021-04-29 03:56:24,077 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1677 transitions. [2021-04-29 03:56:24,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1677 transitions. [2021-04-29 03:56:24,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:56:24,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1677 transitions. [2021-04-29 03:56:24,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.75) internal successors, (1677), 12 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:56:24,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:56:24,089 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:56:24,089 INFO L185 Difference]: Start difference. First operand has 59 places, 41 transitions, 113 flow. Second operand 12 states and 1677 transitions. [2021-04-29 03:56:24,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 126 transitions, 491 flow [2021-04-29 03:56:24,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 490 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:56:24,093 INFO L241 Difference]: Finished difference. Result has 79 places, 57 transitions, 248 flow [2021-04-29 03:56:24,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=248, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2021-04-29 03:56:24,094 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2021-04-29 03:56:24,094 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:56:24,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 57 transitions, 248 flow [2021-04-29 03:56:24,095 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 57 transitions, 248 flow [2021-04-29 03:56:24,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 57 transitions, 248 flow [2021-04-29 03:56:24,315 INFO L129 PetriNetUnfolder]: 257/3036 cut-off events. [2021-04-29 03:56:24,316 INFO L130 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2021-04-29 03:56:24,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5633 conditions, 3036 events. 257/3036 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 44519 event pairs, 0 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 5614. Up to 514 conditions per place. [2021-04-29 03:56:24,368 INFO L146 LiptonReduction]: Number of co-enabled transitions 1048 [2021-04-29 03:56:24,374 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:56:24,375 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:56:24,375 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 281 [2021-04-29 03:56:24,377 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 248 flow [2021-04-29 03:56:24,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:56:24,378 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:56:24,379 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:56:24,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 03:56:24,379 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:56:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:56:24,380 INFO L82 PathProgramCache]: Analyzing trace with hash 78329508, now seen corresponding path program 2 times [2021-04-29 03:56:24,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:56:24,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268845526] [2021-04-29 03:56:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:56:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:56:24,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:56:24,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:56:24,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:56:24,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 03:56:24,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:56:24,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:56:24,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 03:56:24,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 03:56:24,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-04-29 03:56:24,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-29 03:56:24,495 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-04-29 03:56:24,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-29 03:56:24,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-04-29 03:56:24,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-29 03:56:24,562 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-04-29 03:56:24,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-29 03:56:24,610 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-04-29 03:56:24,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-04-29 03:56:24,668 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-04-29 03:56:24,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-29 03:56:24,737 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-04-29 03:56:24,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-29 03:56:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:56:24,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268845526] [2021-04-29 03:56:24,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:56:24,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-29 03:56:24,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228227209] [2021-04-29 03:56:24,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-29 03:56:24,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:56:24,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-29 03:56:24,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-29 03:56:24,803 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-04-29 03:56:24,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:56:24,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:56:24,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-04-29 03:56:24,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 03:58:25,550 INFO L129 PetriNetUnfolder]: 397520/597178 cut-off events. [2021-04-29 03:58:25,551 INFO L130 PetriNetUnfolder]: For 322045/322813 co-relation queries the response was YES. [2021-04-29 03:58:29,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1629445 conditions, 597178 events. 397520/597178 cut-off events. For 322045/322813 co-relation queries the response was YES. Maximal size of possible extension queue 48346. Compared 6222778 event pairs, 40825 based on Foata normal form. 1/386334 useless extension candidates. Maximal degree in co-relation 1629425. Up to 219474 conditions per place. [2021-04-29 03:58:30,476 INFO L132 encePairwiseOnDemand]: 134/153 looper letters, 140 selfloop transitions, 32 changer transitions 0/194 dead transitions. [2021-04-29 03:58:30,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 194 transitions, 1242 flow [2021-04-29 03:58:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-29 03:58:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-04-29 03:58:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1687 transitions. [2021-04-29 03:58:30,481 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9188453159041394 [2021-04-29 03:58:30,482 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1687 transitions. [2021-04-29 03:58:30,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1687 transitions. [2021-04-29 03:58:30,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 03:58:30,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1687 transitions. [2021-04-29 03:58:30,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:58:30,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:58:30,494 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:58:30,494 INFO L185 Difference]: Start difference. First operand has 79 places, 57 transitions, 248 flow. Second operand 12 states and 1687 transitions. [2021-04-29 03:58:30,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 194 transitions, 1242 flow [2021-04-29 03:58:30,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 194 transitions, 1222 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 03:58:30,752 INFO L241 Difference]: Finished difference. Result has 99 places, 81 transitions, 532 flow [2021-04-29 03:58:30,753 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=532, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2021-04-29 03:58:30,753 INFO L343 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2021-04-29 03:58:30,753 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 03:58:30,753 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 81 transitions, 532 flow [2021-04-29 03:58:30,753 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 81 transitions, 532 flow [2021-04-29 03:58:30,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 81 transitions, 532 flow [2021-04-29 03:58:31,878 INFO L129 PetriNetUnfolder]: 313/9775 cut-off events. [2021-04-29 03:58:31,878 INFO L130 PetriNetUnfolder]: For 12758/15926 co-relation queries the response was YES. [2021-04-29 03:58:31,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30461 conditions, 9775 events. 313/9775 cut-off events. For 12758/15926 co-relation queries the response was YES. Maximal size of possible extension queue 4033. Compared 192195 event pairs, 0 based on Foata normal form. 0/4737 useless extension candidates. Maximal degree in co-relation 30432. Up to 1507 conditions per place. [2021-04-29 03:58:32,082 INFO L146 LiptonReduction]: Number of co-enabled transitions 1640 [2021-04-29 03:58:32,087 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 03:58:32,088 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 03:58:32,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1335 [2021-04-29 03:58:32,089 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 532 flow [2021-04-29 03:58:32,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:58:32,091 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 03:58:32,091 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 03:58:32,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 03:58:32,091 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-04-29 03:58:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 03:58:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1901922676, now seen corresponding path program 3 times [2021-04-29 03:58:32,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 03:58:32,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144828681] [2021-04-29 03:58:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 03:58:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 03:58:32,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:58:32,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 03:58:32,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:58:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 03:58:32,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 03:58:32,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 03:58:32,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-04-29 03:58:32,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-29 03:58:32,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-04-29 03:58:32,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-29 03:58:32,197 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-04-29 03:58:32,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-04-29 03:58:32,224 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-04-29 03:58:32,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-04-29 03:58:32,260 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-04-29 03:58:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-04-29 03:58:32,306 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-04-29 03:58:32,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-04-29 03:58:32,362 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-04-29 03:58:32,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-04-29 03:58:32,432 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-04-29 03:58:32,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-04-29 03:58:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 03:58:32,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144828681] [2021-04-29 03:58:32,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 03:58:32,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-04-29 03:58:32,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465930721] [2021-04-29 03:58:32,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-04-29 03:58:32,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 03:58:32,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-04-29 03:58:32,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-04-29 03:58:32,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-04-29 03:58:32,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 532 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 03:58:32,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 03:58:32,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-04-29 03:58:32,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 04:02:39,965 INFO L129 PetriNetUnfolder]: 558846/848311 cut-off events. [2021-04-29 04:02:39,970 INFO L130 PetriNetUnfolder]: For 1372468/1375544 co-relation queries the response was YES. [2021-04-29 04:02:50,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3130333 conditions, 848311 events. 558846/848311 cut-off events. For 1372468/1375544 co-relation queries the response was YES. Maximal size of possible extension queue 75869. Compared 9403365 event pairs, 81369 based on Foata normal form. 1/533885 useless extension candidates. Maximal degree in co-relation 3130303. Up to 330946 conditions per place. [2021-04-29 04:02:51,754 INFO L132 encePairwiseOnDemand]: 134/153 looper letters, 173 selfloop transitions, 48 changer transitions 0/243 dead transitions. [2021-04-29 04:02:51,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 243 transitions, 2124 flow [2021-04-29 04:02:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-29 04:02:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-04-29 04:02:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1687 transitions. [2021-04-29 04:02:51,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9188453159041394 [2021-04-29 04:02:51,767 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1687 transitions. [2021-04-29 04:02:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1687 transitions. [2021-04-29 04:02:51,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 04:02:51,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1687 transitions. [2021-04-29 04:02:51,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:02:51,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:02:51,790 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 04:02:51,790 INFO L185 Difference]: Start difference. First operand has 99 places, 81 transitions, 532 flow. Second operand 12 states and 1687 transitions. [2021-04-29 04:02:51,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 243 transitions, 2124 flow Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown