/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 00:33:27,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 00:33:27,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 00:33:27,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 00:33:27,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-12 00:33:27,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-12 00:33:27,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-12 00:33:27,527 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-SemanticLbe.epf [2021-03-12 00:33:27,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 00:33:27,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 00:33:27,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 00:33:27,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 00:33:27,562 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 00:33:27,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 00:33:27,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 00:33:27,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 00:33:27,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 00:33:27,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 00:33:27,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 00:33:27,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 00:33:27,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 00:33:27,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 00:33:27,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:33:27,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 00:33:27,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-12 00:33:27,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 00:33:27,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 00:33:27,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 00:33:27,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 00:33:27,876 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 00:33:27,877 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 00:33:27,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-03-12 00:33:27,878 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-03-12 00:33:27,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 00:33:27,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 00:33:27,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 00:33:27,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 00:33:27,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 00:33:27,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 00:33:27,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 00:33:27,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 00:33:27,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 00:33:27,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... [2021-03-12 00:33:27,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 00:33:27,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 00:33:27,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 00:33:27,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 00:33:27,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 00:33:28,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 00:33:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 00:33:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 00:33:28,015 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 00:33:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 00:33:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 00:33:28,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 00:33:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 00:33:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 00:33:28,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-12 00:33:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-12 00:33:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-12 00:33:28,016 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-12 00:33:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-12 00:33:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-12 00:33:28,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-03-12 00:33:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-03-12 00:33:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-03-12 00:33:28,017 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-03-12 00:33:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-03-12 00:33:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-03-12 00:33:28,018 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 00:33:28,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 00:33:28,201 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 00:33:28,202 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:33:28 BoogieIcfgContainer [2021-03-12 00:33:28,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 00:33:28,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 00:33:28,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 00:33:28,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 00:33:28,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 12:33:27" (1/2) ... [2021-03-12 00:33:28,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c8c2b6 and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 12:33:28, skipping insertion in model container [2021-03-12 00:33:28,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 12:33:28" (2/2) ... [2021-03-12 00:33:28,208 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-03-12 00:33:28,213 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 00:33:28,216 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 00:33:28,216 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 00:33:28,285 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-03-12 00:33:28,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-12 00:33:28,316 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 00:33:28,316 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-12 00:33:28,317 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 00:33:28,317 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 00:33:28,317 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 00:33:28,317 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 00:33:28,317 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 00:33:28,317 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 00:33:28,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 54 transitions, 156 flow [2021-03-12 00:33:28,368 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-12 00:33:28,369 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:33:28,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 0/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:33:28,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 54 transitions, 156 flow [2021-03-12 00:33:28,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 46 transitions, 128 flow [2021-03-12 00:33:28,377 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-12 00:33:28,401 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-12 00:33:28,403 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 46 transitions, 128 flow [2021-03-12 00:33:28,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 46 transitions, 128 flow [2021-03-12 00:33:28,427 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-03-12 00:33:28,427 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:33:28,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 46 events. 0/46 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-12 00:33:28,429 INFO L116 LiptonReduction]: Number of co-enabled transitions 1110 [2021-03-12 00:33:29,965 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2021-03-12 00:33:29,965 INFO L133 LiptonReduction]: Total number of compositions: 19 [2021-03-12 00:33:29,966 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1591 [2021-03-12 00:33:29,998 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-12 00:33:29,998 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-12 00:33:29,998 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:29,999 INFO L255 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] [2021-03-12 00:33:29,999 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 786447140, now seen corresponding path program 1 times [2021-03-12 00:33:30,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:30,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086353047] [2021-03-12 00:33:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:30,259 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-12 00:33:30,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-12 00:33:30,280 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-12 00:33:30,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:33:30,285 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-03-12 00:33:30,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-12 00:33:30,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:30,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:33:30,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:30,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:30,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:30,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:30,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:30,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:30,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:30,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-12 00:33:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:30,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086353047] [2021-03-12 00:33:30,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:30,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:33:30,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401408405] [2021-03-12 00:33:30,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:33:30,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:33:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:33:30,337 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 73 [2021-03-12 00:33:30,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:30,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:30,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 73 [2021-03-12 00:33:30,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:30,855 INFO L129 PetriNetUnfolder]: 4087/5845 cut-off events. [2021-03-12 00:33:30,855 INFO L130 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2021-03-12 00:33:30,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11704 conditions, 5845 events. 4087/5845 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 32493 event pairs, 1830 based on Foata normal form. 1/5807 useless extension candidates. Maximal degree in co-relation 11670. Up to 2916 conditions per place. [2021-03-12 00:33:30,898 INFO L132 encePairwiseOnDemand]: 58/73 looper letters, 28 selfloop transitions, 13 changer transitions 1/54 dead transitions. [2021-03-12 00:33:30,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 228 flow [2021-03-12 00:33:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2021-03-12 00:33:30,978 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6931506849315069 [2021-03-12 00:33:30,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 253 transitions. [2021-03-12 00:33:30,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 253 transitions. [2021-03-12 00:33:30,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:30,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 253 transitions. [2021-03-12 00:33:30,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 50.6) internal successors, (253), 5 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:31,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:31,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:31,004 INFO L185 Difference]: Start difference. First operand has 46 places, 27 transitions, 90 flow. Second operand 5 states and 253 transitions. [2021-03-12 00:33:31,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 228 flow [2021-03-12 00:33:31,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 204 flow, removed 0 selfloop flow, removed 12 redundant places. [2021-03-12 00:33:31,036 INFO L241 Difference]: Finished difference. Result has 41 places, 38 transitions, 160 flow [2021-03-12 00:33:31,038 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2021-03-12 00:33:31,039 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2021-03-12 00:33:31,039 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 160 flow [2021-03-12 00:33:31,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:31,040 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:31,040 INFO L255 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] [2021-03-12 00:33:31,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 00:33:31,041 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:31,042 INFO L82 PathProgramCache]: Analyzing trace with hash 183768392, now seen corresponding path program 2 times [2021-03-12 00:33:31,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:31,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260770425] [2021-03-12 00:33:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:31,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:31,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:31,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:31,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:31,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:31,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:31,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:31,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:31,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260770425] [2021-03-12 00:33:31,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:31,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:33:31,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601335641] [2021-03-12 00:33:31,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:33:31,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:33:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:33:31,110 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:31,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:31,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:31,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:31,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:32,042 INFO L129 PetriNetUnfolder]: 8395/11782 cut-off events. [2021-03-12 00:33:32,042 INFO L130 PetriNetUnfolder]: For 6198/6751 co-relation queries the response was YES. [2021-03-12 00:33:32,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36551 conditions, 11782 events. 8395/11782 cut-off events. For 6198/6751 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 68747 event pairs, 1917 based on Foata normal form. 251/11999 useless extension candidates. Maximal degree in co-relation 36197. Up to 5794 conditions per place. [2021-03-12 00:33:32,148 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 31 selfloop transitions, 45 changer transitions 0/89 dead transitions. [2021-03-12 00:33:32,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 536 flow [2021-03-12 00:33:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:33:32,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:33:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2021-03-12 00:33:32,151 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6118721461187214 [2021-03-12 00:33:32,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 268 transitions. [2021-03-12 00:33:32,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 268 transitions. [2021-03-12 00:33:32,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:32,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 268 transitions. [2021-03-12 00:33:32,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:32,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:32,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:32,158 INFO L185 Difference]: Start difference. First operand has 41 places, 38 transitions, 160 flow. Second operand 6 states and 268 transitions. [2021-03-12 00:33:32,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 536 flow [2021-03-12 00:33:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 89 transitions, 494 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-12 00:33:32,163 INFO L241 Difference]: Finished difference. Result has 44 places, 76 transitions, 457 flow [2021-03-12 00:33:32,164 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=44, PETRI_TRANSITIONS=76} [2021-03-12 00:33:32,164 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2021-03-12 00:33:32,164 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 76 transitions, 457 flow [2021-03-12 00:33:32,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:32,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:32,165 INFO L255 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] [2021-03-12 00:33:32,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 00:33:32,165 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1130615298, now seen corresponding path program 3 times [2021-03-12 00:33:32,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:32,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985921497] [2021-03-12 00:33:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:32,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:32,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:32,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:32,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:32,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:32,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:32,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:32,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985921497] [2021-03-12 00:33:32,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:32,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:33:32,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092543871] [2021-03-12 00:33:32,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:32,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:32,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:32,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:32,230 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:32,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 76 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:32,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:32,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:32,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:33,071 INFO L129 PetriNetUnfolder]: 8628/11979 cut-off events. [2021-03-12 00:33:33,071 INFO L130 PetriNetUnfolder]: For 11849/13746 co-relation queries the response was YES. [2021-03-12 00:33:33,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50040 conditions, 11979 events. 8628/11979 cut-off events. For 11849/13746 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 67206 event pairs, 1725 based on Foata normal form. 91/12031 useless extension candidates. Maximal degree in co-relation 49792. Up to 11174 conditions per place. [2021-03-12 00:33:33,167 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 73 selfloop transitions, 46 changer transitions 0/132 dead transitions. [2021-03-12 00:33:33,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 132 transitions, 1070 flow [2021-03-12 00:33:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2021-03-12 00:33:33,169 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5972602739726027 [2021-03-12 00:33:33,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2021-03-12 00:33:33,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2021-03-12 00:33:33,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:33,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2021-03-12 00:33:33,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:33,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:33,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:33,171 INFO L185 Difference]: Start difference. First operand has 44 places, 76 transitions, 457 flow. Second operand 5 states and 218 transitions. [2021-03-12 00:33:33,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 132 transitions, 1070 flow [2021-03-12 00:33:33,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 132 transitions, 1039 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-03-12 00:33:33,185 INFO L241 Difference]: Finished difference. Result has 49 places, 115 transitions, 905 flow [2021-03-12 00:33:33,185 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=905, PETRI_PLACES=49, PETRI_TRANSITIONS=115} [2021-03-12 00:33:33,185 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2021-03-12 00:33:33,185 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 115 transitions, 905 flow [2021-03-12 00:33:33,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:33,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:33,186 INFO L255 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] [2021-03-12 00:33:33,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 00:33:33,186 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1801027184, now seen corresponding path program 4 times [2021-03-12 00:33:33,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:33,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267352849] [2021-03-12 00:33:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:33,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:33,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:33,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:33,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:33,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267352849] [2021-03-12 00:33:33,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:33,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:33:33,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271112206] [2021-03-12 00:33:33,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:33:33,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:33,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:33:33,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:33:33,241 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:33,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 115 transitions, 905 flow. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:33,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:33,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:33,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:34,755 INFO L129 PetriNetUnfolder]: 11160/15970 cut-off events. [2021-03-12 00:33:34,755 INFO L130 PetriNetUnfolder]: For 23836/25089 co-relation queries the response was YES. [2021-03-12 00:33:34,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68908 conditions, 15970 events. 11160/15970 cut-off events. For 23836/25089 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 98576 event pairs, 1536 based on Foata normal form. 91/16024 useless extension candidates. Maximal degree in co-relation 68328. Up to 8131 conditions per place. [2021-03-12 00:33:34,872 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 34 selfloop transitions, 292 changer transitions 0/339 dead transitions. [2021-03-12 00:33:34,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 339 transitions, 3359 flow [2021-03-12 00:33:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:33:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:33:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 364 transitions. [2021-03-12 00:33:34,875 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2021-03-12 00:33:34,875 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 364 transitions. [2021-03-12 00:33:34,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 364 transitions. [2021-03-12 00:33:34,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:34,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 364 transitions. [2021-03-12 00:33:34,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:34,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:34,879 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:34,879 INFO L185 Difference]: Start difference. First operand has 49 places, 115 transitions, 905 flow. Second operand 8 states and 364 transitions. [2021-03-12 00:33:34,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 339 transitions, 3359 flow [2021-03-12 00:33:34,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 339 transitions, 3352 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-12 00:33:34,907 INFO L241 Difference]: Finished difference. Result has 58 places, 326 transitions, 3703 flow [2021-03-12 00:33:34,908 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3703, PETRI_PLACES=58, PETRI_TRANSITIONS=326} [2021-03-12 00:33:34,908 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2021-03-12 00:33:34,908 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 326 transitions, 3703 flow [2021-03-12 00:33:34,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:34,908 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:34,908 INFO L255 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] [2021-03-12 00:33:34,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-12 00:33:34,909 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1089251656, now seen corresponding path program 5 times [2021-03-12 00:33:34,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:34,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551074097] [2021-03-12 00:33:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:34,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:34,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:34,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:34,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:34,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:34,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:34,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:34,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:34,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551074097] [2021-03-12 00:33:34,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:34,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:33:34,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563361505] [2021-03-12 00:33:34,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:34,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:34,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:34,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:34,993 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:34,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 326 transitions, 3703 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:34,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:34,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:34,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:36,646 INFO L129 PetriNetUnfolder]: 11290/16078 cut-off events. [2021-03-12 00:33:36,646 INFO L130 PetriNetUnfolder]: For 47269/51567 co-relation queries the response was YES. [2021-03-12 00:33:36,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96118 conditions, 16078 events. 11290/16078 cut-off events. For 47269/51567 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 98669 event pairs, 2234 based on Foata normal form. 156/16197 useless extension candidates. Maximal degree in co-relation 95611. Up to 14847 conditions per place. [2021-03-12 00:33:36,901 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 235 selfloop transitions, 154 changer transitions 0/402 dead transitions. [2021-03-12 00:33:36,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 402 transitions, 5366 flow [2021-03-12 00:33:36,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2021-03-12 00:33:36,902 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5972602739726027 [2021-03-12 00:33:36,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2021-03-12 00:33:36,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2021-03-12 00:33:36,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:36,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2021-03-12 00:33:36,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:36,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:36,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:36,904 INFO L185 Difference]: Start difference. First operand has 58 places, 326 transitions, 3703 flow. Second operand 5 states and 218 transitions. [2021-03-12 00:33:36,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 402 transitions, 5366 flow [2021-03-12 00:33:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 402 transitions, 5249 flow, removed 55 selfloop flow, removed 1 redundant places. [2021-03-12 00:33:37,117 INFO L241 Difference]: Finished difference. Result has 62 places, 369 transitions, 4577 flow [2021-03-12 00:33:37,117 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3626, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4577, PETRI_PLACES=62, PETRI_TRANSITIONS=369} [2021-03-12 00:33:37,117 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2021-03-12 00:33:37,117 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 369 transitions, 4577 flow [2021-03-12 00:33:37,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:37,118 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:37,118 INFO L255 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] [2021-03-12 00:33:37,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-12 00:33:37,118 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash -117930072, now seen corresponding path program 6 times [2021-03-12 00:33:37,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:37,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969941277] [2021-03-12 00:33:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:37,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:37,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:37,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:37,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:37,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:37,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:37,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:37,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:37,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:37,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:37,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969941277] [2021-03-12 00:33:37,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:37,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:33:37,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700126244] [2021-03-12 00:33:37,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:33:37,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:33:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:33:37,166 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:37,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 369 transitions, 4577 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:37,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:37,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:37,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:38,826 INFO L129 PetriNetUnfolder]: 12091/17341 cut-off events. [2021-03-12 00:33:38,826 INFO L130 PetriNetUnfolder]: For 52410/57249 co-relation queries the response was YES. [2021-03-12 00:33:38,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100181 conditions, 17341 events. 12091/17341 cut-off events. For 52410/57249 co-relation queries the response was YES. Maximal size of possible extension queue 1275. Compared 109274 event pairs, 1921 based on Foata normal form. 482/17778 useless extension candidates. Maximal degree in co-relation 99594. Up to 8838 conditions per place. [2021-03-12 00:33:38,950 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 118 selfloop transitions, 375 changer transitions 0/506 dead transitions. [2021-03-12 00:33:38,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 506 transitions, 7393 flow [2021-03-12 00:33:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:33:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:33:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2021-03-12 00:33:38,952 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6118721461187214 [2021-03-12 00:33:38,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 268 transitions. [2021-03-12 00:33:38,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 268 transitions. [2021-03-12 00:33:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:38,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 268 transitions. [2021-03-12 00:33:38,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:38,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:38,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:38,961 INFO L185 Difference]: Start difference. First operand has 62 places, 369 transitions, 4577 flow. Second operand 6 states and 268 transitions. [2021-03-12 00:33:38,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 506 transitions, 7393 flow [2021-03-12 00:33:39,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 506 transitions, 7172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:33:39,088 INFO L241 Difference]: Finished difference. Result has 66 places, 479 transitions, 6929 flow [2021-03-12 00:33:39,089 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4426, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6929, PETRI_PLACES=66, PETRI_TRANSITIONS=479} [2021-03-12 00:33:39,089 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2021-03-12 00:33:39,089 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 479 transitions, 6929 flow [2021-03-12 00:33:39,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:39,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:39,089 INFO L255 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] [2021-03-12 00:33:39,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-12 00:33:39,090 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1699408836, now seen corresponding path program 7 times [2021-03-12 00:33:39,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:39,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352914746] [2021-03-12 00:33:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:39,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:39,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:39,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:39,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:39,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:39,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:39,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:39,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352914746] [2021-03-12 00:33:39,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:39,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:33:39,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137302180] [2021-03-12 00:33:39,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:33:39,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:39,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:33:39,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:33:39,129 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:39,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 479 transitions, 6929 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:39,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:39,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:39,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:41,253 INFO L129 PetriNetUnfolder]: 14277/20726 cut-off events. [2021-03-12 00:33:41,253 INFO L130 PetriNetUnfolder]: For 80247/85074 co-relation queries the response was YES. [2021-03-12 00:33:41,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130105 conditions, 20726 events. 14277/20726 cut-off events. For 80247/85074 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 136457 event pairs, 1622 based on Foata normal form. 409/21092 useless extension candidates. Maximal degree in co-relation 129409. Up to 10768 conditions per place. [2021-03-12 00:33:41,495 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 90 selfloop transitions, 556 changer transitions 0/659 dead transitions. [2021-03-12 00:33:41,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 659 transitions, 10494 flow [2021-03-12 00:33:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:33:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:33:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2021-03-12 00:33:41,497 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6183953033268101 [2021-03-12 00:33:41,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 316 transitions. [2021-03-12 00:33:41,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 316 transitions. [2021-03-12 00:33:41,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:41,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 316 transitions. [2021-03-12 00:33:41,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:41,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:41,499 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:41,499 INFO L185 Difference]: Start difference. First operand has 66 places, 479 transitions, 6929 flow. Second operand 7 states and 316 transitions. [2021-03-12 00:33:41,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 659 transitions, 10494 flow [2021-03-12 00:33:41,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 659 transitions, 9998 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:33:41,656 INFO L241 Difference]: Finished difference. Result has 71 places, 646 transitions, 10426 flow [2021-03-12 00:33:41,657 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6517, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10426, PETRI_PLACES=71, PETRI_TRANSITIONS=646} [2021-03-12 00:33:41,657 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2021-03-12 00:33:41,657 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 646 transitions, 10426 flow [2021-03-12 00:33:41,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:41,657 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:41,657 INFO L255 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] [2021-03-12 00:33:41,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-12 00:33:41,658 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash 925871362, now seen corresponding path program 8 times [2021-03-12 00:33:41,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:41,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183503462] [2021-03-12 00:33:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:41,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:41,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:41,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:41,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:41,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:41,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:41,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:41,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183503462] [2021-03-12 00:33:41,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:41,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:33:41,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717858850] [2021-03-12 00:33:41,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:33:41,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:41,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:33:41,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:33:41,696 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:41,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 646 transitions, 10426 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:41,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:41,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:41,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:44,351 INFO L129 PetriNetUnfolder]: 14984/21853 cut-off events. [2021-03-12 00:33:44,352 INFO L130 PetriNetUnfolder]: For 130839/138320 co-relation queries the response was YES. [2021-03-12 00:33:44,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155527 conditions, 21853 events. 14984/21853 cut-off events. For 130839/138320 co-relation queries the response was YES. Maximal size of possible extension queue 1672. Compared 146589 event pairs, 1684 based on Foata normal form. 595/22404 useless extension candidates. Maximal degree in co-relation 154853. Up to 11448 conditions per place. [2021-03-12 00:33:44,522 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 90 selfloop transitions, 747 changer transitions 0/850 dead transitions. [2021-03-12 00:33:44,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 850 transitions, 15680 flow [2021-03-12 00:33:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 00:33:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-12 00:33:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2021-03-12 00:33:44,524 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6183953033268101 [2021-03-12 00:33:44,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 316 transitions. [2021-03-12 00:33:44,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 316 transitions. [2021-03-12 00:33:44,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:44,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 316 transitions. [2021-03-12 00:33:44,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:44,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:44,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:44,526 INFO L185 Difference]: Start difference. First operand has 71 places, 646 transitions, 10426 flow. Second operand 7 states and 316 transitions. [2021-03-12 00:33:44,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 850 transitions, 15680 flow [2021-03-12 00:33:44,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 850 transitions, 15671 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-12 00:33:44,800 INFO L241 Difference]: Finished difference. Result has 77 places, 838 transitions, 15807 flow [2021-03-12 00:33:44,800 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10417, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=555, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15807, PETRI_PLACES=77, PETRI_TRANSITIONS=838} [2021-03-12 00:33:44,801 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2021-03-12 00:33:44,801 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 838 transitions, 15807 flow [2021-03-12 00:33:44,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:44,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:44,801 INFO L255 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] [2021-03-12 00:33:44,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-12 00:33:44,801 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1737993474, now seen corresponding path program 9 times [2021-03-12 00:33:44,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:44,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667775067] [2021-03-12 00:33:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:44,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:44,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:44,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:44,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:44,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:44,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:44,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:44,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667775067] [2021-03-12 00:33:44,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:44,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:33:44,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551106833] [2021-03-12 00:33:44,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:33:44,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:44,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:33:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:33:44,837 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:44,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 838 transitions, 15807 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:44,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:44,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:44,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:48,758 INFO L129 PetriNetUnfolder]: 15822/23200 cut-off events. [2021-03-12 00:33:48,759 INFO L130 PetriNetUnfolder]: For 184325/192509 co-relation queries the response was YES. [2021-03-12 00:33:48,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184595 conditions, 23200 events. 15822/23200 cut-off events. For 184325/192509 co-relation queries the response was YES. Maximal size of possible extension queue 1808. Compared 159067 event pairs, 1969 based on Foata normal form. 704/23863 useless extension candidates. Maximal degree in co-relation 183936. Up to 12135 conditions per place. [2021-03-12 00:33:48,914 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 210 selfloop transitions, 832 changer transitions 0/1055 dead transitions. [2021-03-12 00:33:48,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 1055 transitions, 22269 flow [2021-03-12 00:33:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:33:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:33:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2021-03-12 00:33:48,916 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6118721461187214 [2021-03-12 00:33:48,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 268 transitions. [2021-03-12 00:33:48,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 268 transitions. [2021-03-12 00:33:48,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:48,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 268 transitions. [2021-03-12 00:33:48,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:48,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:48,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:48,918 INFO L185 Difference]: Start difference. First operand has 77 places, 838 transitions, 15807 flow. Second operand 6 states and 268 transitions. [2021-03-12 00:33:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 1055 transitions, 22269 flow [2021-03-12 00:33:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 1055 transitions, 21201 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-12 00:33:49,247 INFO L241 Difference]: Finished difference. Result has 79 places, 1031 transitions, 20941 flow [2021-03-12 00:33:49,247 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14848, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=20941, PETRI_PLACES=79, PETRI_TRANSITIONS=1031} [2021-03-12 00:33:49,248 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2021-03-12 00:33:49,248 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 1031 transitions, 20941 flow [2021-03-12 00:33:49,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:49,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:49,248 INFO L255 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] [2021-03-12 00:33:49,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-12 00:33:49,248 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1140497062, now seen corresponding path program 10 times [2021-03-12 00:33:49,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:49,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223202389] [2021-03-12 00:33:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:49,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:49,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:49,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:49,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:49,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:49,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:49,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:49,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:49,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:49,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223202389] [2021-03-12 00:33:49,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:49,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:33:49,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16697975] [2021-03-12 00:33:49,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:33:49,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:49,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:33:49,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:33:49,280 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:49,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 1031 transitions, 20941 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:49,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:49,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:49,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:53,637 INFO L129 PetriNetUnfolder]: 16470/24269 cut-off events. [2021-03-12 00:33:53,637 INFO L130 PetriNetUnfolder]: For 226033/233580 co-relation queries the response was YES. [2021-03-12 00:33:53,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196240 conditions, 24269 events. 16470/24269 cut-off events. For 226033/233580 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 168966 event pairs, 1988 based on Foata normal form. 636/24865 useless extension candidates. Maximal degree in co-relation 195585. Up to 12656 conditions per place. [2021-03-12 00:33:53,800 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 210 selfloop transitions, 970 changer transitions 0/1193 dead transitions. [2021-03-12 00:33:53,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 1193 transitions, 26701 flow [2021-03-12 00:33:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:33:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:33:53,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2021-03-12 00:33:53,801 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6118721461187214 [2021-03-12 00:33:53,802 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 268 transitions. [2021-03-12 00:33:53,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 268 transitions. [2021-03-12 00:33:53,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:53,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 268 transitions. [2021-03-12 00:33:53,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.666666666666664) internal successors, (268), 6 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:53,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:53,804 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:53,804 INFO L185 Difference]: Start difference. First operand has 79 places, 1031 transitions, 20941 flow. Second operand 6 states and 268 transitions. [2021-03-12 00:33:53,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 1193 transitions, 26701 flow [2021-03-12 00:33:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 1193 transitions, 25694 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:33:54,143 INFO L241 Difference]: Finished difference. Result has 82 places, 1171 transitions, 25461 flow [2021-03-12 00:33:54,144 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19978, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=826, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=25461, PETRI_PLACES=82, PETRI_TRANSITIONS=1171} [2021-03-12 00:33:54,144 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2021-03-12 00:33:54,145 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 1171 transitions, 25461 flow [2021-03-12 00:33:54,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:54,145 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:54,145 INFO L255 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] [2021-03-12 00:33:54,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-12 00:33:54,145 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:54,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1637784902, now seen corresponding path program 11 times [2021-03-12 00:33:54,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:54,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255529702] [2021-03-12 00:33:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:54,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:54,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:54,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:54,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:54,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:54,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:54,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:54,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:54,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255529702] [2021-03-12 00:33:54,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:54,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:33:54,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906075083] [2021-03-12 00:33:54,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:54,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:54,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:54,173 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:54,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 1171 transitions, 25461 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:54,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:54,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:54,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:33:58,989 INFO L129 PetriNetUnfolder]: 16572/24441 cut-off events. [2021-03-12 00:33:58,989 INFO L130 PetriNetUnfolder]: For 258031/269327 co-relation queries the response was YES. [2021-03-12 00:33:59,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204731 conditions, 24441 events. 16572/24441 cut-off events. For 258031/269327 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 171534 event pairs, 2879 based on Foata normal form. 389/24781 useless extension candidates. Maximal degree in co-relation 204154. Up to 21501 conditions per place. [2021-03-12 00:33:59,180 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 587 selfloop transitions, 740 changer transitions 0/1340 dead transitions. [2021-03-12 00:33:59,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1340 transitions, 32060 flow [2021-03-12 00:33:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:33:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:33:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2021-03-12 00:33:59,181 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5972602739726027 [2021-03-12 00:33:59,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2021-03-12 00:33:59,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2021-03-12 00:33:59,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:33:59,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2021-03-12 00:33:59,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:59,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:59,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:59,183 INFO L185 Difference]: Start difference. First operand has 82 places, 1171 transitions, 25461 flow. Second operand 5 states and 218 transitions. [2021-03-12 00:33:59,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 1340 transitions, 32060 flow [2021-03-12 00:33:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 1340 transitions, 30913 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:33:59,722 INFO L241 Difference]: Finished difference. Result has 84 places, 1311 transitions, 29730 flow [2021-03-12 00:33:59,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=24314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=594, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=29730, PETRI_PLACES=84, PETRI_TRANSITIONS=1311} [2021-03-12 00:33:59,723 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2021-03-12 00:33:59,723 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 1311 transitions, 29730 flow [2021-03-12 00:33:59,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:59,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:33:59,723 INFO L255 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] [2021-03-12 00:33:59,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-12 00:33:59,723 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:33:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:33:59,724 INFO L82 PathProgramCache]: Analyzing trace with hash -673235858, now seen corresponding path program 12 times [2021-03-12 00:33:59,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:33:59,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877176901] [2021-03-12 00:33:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:33:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:33:59,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:59,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:33:59,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:59,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:59,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:59,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:33:59,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:33:59,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:33:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:33:59,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877176901] [2021-03-12 00:33:59,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:33:59,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:33:59,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617870320] [2021-03-12 00:33:59,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:33:59,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:33:59,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:33:59,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:33:59,765 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:33:59,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 1311 transitions, 29730 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:33:59,766 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:33:59,766 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:33:59,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:04,929 INFO L129 PetriNetUnfolder]: 16559/24461 cut-off events. [2021-03-12 00:34:04,930 INFO L130 PetriNetUnfolder]: For 276065/284161 co-relation queries the response was YES. [2021-03-12 00:34:05,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200109 conditions, 24461 events. 16559/24461 cut-off events. For 276065/284161 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 172256 event pairs, 2698 based on Foata normal form. 293/24713 useless extension candidates. Maximal degree in co-relation 199576. Up to 21399 conditions per place. [2021-03-12 00:34:05,118 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 587 selfloop transitions, 828 changer transitions 0/1428 dead transitions. [2021-03-12 00:34:05,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 1428 transitions, 35381 flow [2021-03-12 00:34:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2021-03-12 00:34:05,119 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5972602739726027 [2021-03-12 00:34:05,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2021-03-12 00:34:05,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2021-03-12 00:34:05,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:05,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2021-03-12 00:34:05,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:05,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:05,121 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:05,121 INFO L185 Difference]: Start difference. First operand has 84 places, 1311 transitions, 29730 flow. Second operand 5 states and 218 transitions. [2021-03-12 00:34:05,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 1428 transitions, 35381 flow [2021-03-12 00:34:05,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 1428 transitions, 34556 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:05,668 INFO L241 Difference]: Finished difference. Result has 87 places, 1403 transitions, 33425 flow [2021-03-12 00:34:05,669 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28729, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=726, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=33425, PETRI_PLACES=87, PETRI_TRANSITIONS=1403} [2021-03-12 00:34:05,670 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2021-03-12 00:34:05,670 INFO L480 AbstractCegarLoop]: Abstraction has has 87 places, 1403 transitions, 33425 flow [2021-03-12 00:34:05,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:05,670 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:05,670 INFO L255 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] [2021-03-12 00:34:05,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-12 00:34:05,670 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:05,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:05,671 INFO L82 PathProgramCache]: Analyzing trace with hash 406041648, now seen corresponding path program 13 times [2021-03-12 00:34:05,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:05,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51837056] [2021-03-12 00:34:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:05,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:05,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:34:05,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:05,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:05,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:05,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51837056] [2021-03-12 00:34:05,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:05,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:34:05,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334604194] [2021-03-12 00:34:05,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:34:05,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:34:05,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:34:05,723 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:05,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 1403 transitions, 33425 flow. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:05,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:05,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:05,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:11,973 INFO L129 PetriNetUnfolder]: 18506/27957 cut-off events. [2021-03-12 00:34:11,973 INFO L130 PetriNetUnfolder]: For 282616/291967 co-relation queries the response was YES. [2021-03-12 00:34:12,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221537 conditions, 27957 events. 18506/27957 cut-off events. For 282616/291967 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 206045 event pairs, 472 based on Foata normal form. 800/28717 useless extension candidates. Maximal degree in co-relation 220599. Up to 14548 conditions per place. [2021-03-12 00:34:12,333 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 69 selfloop transitions, 1529 changer transitions 0/1611 dead transitions. [2021-03-12 00:34:12,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 1611 transitions, 39529 flow [2021-03-12 00:34:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:34:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:34:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 364 transitions. [2021-03-12 00:34:12,334 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2021-03-12 00:34:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 364 transitions. [2021-03-12 00:34:12,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 364 transitions. [2021-03-12 00:34:12,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:12,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 364 transitions. [2021-03-12 00:34:12,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:12,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:12,337 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:12,338 INFO L185 Difference]: Start difference. First operand has 87 places, 1403 transitions, 33425 flow. Second operand 8 states and 364 transitions. [2021-03-12 00:34:12,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 1611 transitions, 39529 flow [2021-03-12 00:34:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 1611 transitions, 38704 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:12,839 INFO L241 Difference]: Finished difference. Result has 95 places, 1578 transitions, 39957 flow [2021-03-12 00:34:12,840 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=32600, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39957, PETRI_PLACES=95, PETRI_TRANSITIONS=1578} [2021-03-12 00:34:12,840 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2021-03-12 00:34:12,840 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 1578 transitions, 39957 flow [2021-03-12 00:34:12,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:12,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:12,841 INFO L255 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] [2021-03-12 00:34:12,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-12 00:34:12,841 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:12,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1522104776, now seen corresponding path program 14 times [2021-03-12 00:34:12,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:12,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907315700] [2021-03-12 00:34:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:12,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:12,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:12,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:12,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:12,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:12,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:12,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:12,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:12,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907315700] [2021-03-12 00:34:12,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:12,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-12 00:34:12,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649719260] [2021-03-12 00:34:12,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-12 00:34:12,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-12 00:34:12,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-12 00:34:12,884 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:12,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 1578 transitions, 39957 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:12,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:12,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:12,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:20,422 INFO L129 PetriNetUnfolder]: 18436/27575 cut-off events. [2021-03-12 00:34:20,423 INFO L130 PetriNetUnfolder]: For 409056/419481 co-relation queries the response was YES. [2021-03-12 00:34:20,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255348 conditions, 27575 events. 18436/27575 cut-off events. For 409056/419481 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 200799 event pairs, 1660 based on Foata normal form. 285/27818 useless extension candidates. Maximal degree in co-relation 254765. Up to 24362 conditions per place. [2021-03-12 00:34:20,671 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 762 selfloop transitions, 881 changer transitions 1/1657 dead transitions. [2021-03-12 00:34:20,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 1657 transitions, 45263 flow [2021-03-12 00:34:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-12 00:34:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-12 00:34:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2021-03-12 00:34:20,679 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5972602739726027 [2021-03-12 00:34:20,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2021-03-12 00:34:20,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2021-03-12 00:34:20,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:20,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2021-03-12 00:34:20,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:20,680 INFO L185 Difference]: Start difference. First operand has 95 places, 1578 transitions, 39957 flow. Second operand 5 states and 218 transitions. [2021-03-12 00:34:20,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 1657 transitions, 45263 flow [2021-03-12 00:34:21,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 1657 transitions, 44971 flow, removed 71 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:21,754 INFO L241 Difference]: Finished difference. Result has 98 places, 1635 transitions, 43459 flow [2021-03-12 00:34:21,755 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=39289, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=811, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=43459, PETRI_PLACES=98, PETRI_TRANSITIONS=1635} [2021-03-12 00:34:21,756 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2021-03-12 00:34:21,756 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 1635 transitions, 43459 flow [2021-03-12 00:34:21,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:21,756 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:21,756 INFO L255 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] [2021-03-12 00:34:21,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-12 00:34:21,756 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:21,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1359331528, now seen corresponding path program 15 times [2021-03-12 00:34:21,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:21,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958077636] [2021-03-12 00:34:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:21,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:21,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:21,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:21,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:21,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:21,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:21,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:21,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:21,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958077636] [2021-03-12 00:34:21,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:21,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:34:21,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314692351] [2021-03-12 00:34:21,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:34:21,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:21,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:34:21,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:34:21,831 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:21,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 1635 transitions, 43459 flow. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:21,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:21,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:21,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:29,490 INFO L129 PetriNetUnfolder]: 18280/27566 cut-off events. [2021-03-12 00:34:29,490 INFO L130 PetriNetUnfolder]: For 397357/402647 co-relation queries the response was YES. [2021-03-12 00:34:29,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250030 conditions, 27566 events. 18280/27566 cut-off events. For 397357/402647 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 203350 event pairs, 660 based on Foata normal form. 394/27939 useless extension candidates. Maximal degree in co-relation 249196. Up to 14735 conditions per place. [2021-03-12 00:34:29,692 INFO L132 encePairwiseOnDemand]: 59/73 looper letters, 109 selfloop transitions, 1754 changer transitions 0/1876 dead transitions. [2021-03-12 00:34:29,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 1876 transitions, 54109 flow [2021-03-12 00:34:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:34:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:34:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 362 transitions. [2021-03-12 00:34:29,693 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6198630136986302 [2021-03-12 00:34:29,693 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 362 transitions. [2021-03-12 00:34:29,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 362 transitions. [2021-03-12 00:34:29,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:29,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 362 transitions. [2021-03-12 00:34:29,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.25) internal successors, (362), 8 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:29,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:29,696 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:29,696 INFO L185 Difference]: Start difference. First operand has 98 places, 1635 transitions, 43459 flow. Second operand 8 states and 362 transitions. [2021-03-12 00:34:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 1876 transitions, 54109 flow [2021-03-12 00:34:30,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 1876 transitions, 53027 flow, removed 24 selfloop flow, removed 2 redundant places. [2021-03-12 00:34:30,603 INFO L241 Difference]: Finished difference. Result has 105 places, 1867 transitions, 54052 flow [2021-03-12 00:34:30,604 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=42296, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1514, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=54052, PETRI_PLACES=105, PETRI_TRANSITIONS=1867} [2021-03-12 00:34:30,604 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2021-03-12 00:34:30,604 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 1867 transitions, 54052 flow [2021-03-12 00:34:30,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:30,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:30,605 INFO L255 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] [2021-03-12 00:34:30,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-12 00:34:30,605 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:30,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:30,605 INFO L82 PathProgramCache]: Analyzing trace with hash 262884130, now seen corresponding path program 16 times [2021-03-12 00:34:30,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:30,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160664485] [2021-03-12 00:34:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:30,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:30,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:30,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:30,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:30,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:30,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:30,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:30,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160664485] [2021-03-12 00:34:30,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:30,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:34:30,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804155383] [2021-03-12 00:34:30,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:30,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:30,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:30,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:30,635 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:30,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 1867 transitions, 54052 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:30,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:30,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:30,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:38,364 INFO L129 PetriNetUnfolder]: 15378/23826 cut-off events. [2021-03-12 00:34:38,364 INFO L130 PetriNetUnfolder]: For 347169/352233 co-relation queries the response was YES. [2021-03-12 00:34:38,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233924 conditions, 23826 events. 15378/23826 cut-off events. For 347169/352233 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 179090 event pairs, 682 based on Foata normal form. 1186/24996 useless extension candidates. Maximal degree in co-relation 233087. Up to 12695 conditions per place. [2021-03-12 00:34:38,556 INFO L132 encePairwiseOnDemand]: 59/73 looper letters, 338 selfloop transitions, 1446 changer transitions 0/1797 dead transitions. [2021-03-12 00:34:38,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 1797 transitions, 53856 flow [2021-03-12 00:34:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:34:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:34:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2021-03-12 00:34:38,558 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2021-03-12 00:34:38,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 266 transitions. [2021-03-12 00:34:38,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 266 transitions. [2021-03-12 00:34:38,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:38,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 266 transitions. [2021-03-12 00:34:38,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:38,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:38,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:38,559 INFO L185 Difference]: Start difference. First operand has 105 places, 1867 transitions, 54052 flow. Second operand 6 states and 266 transitions. [2021-03-12 00:34:38,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 1797 transitions, 53856 flow [2021-03-12 00:34:39,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 1797 transitions, 51215 flow, removed 1043 selfloop flow, removed 4 redundant places. [2021-03-12 00:34:39,977 INFO L241 Difference]: Finished difference. Result has 108 places, 1763 transitions, 51372 flow [2021-03-12 00:34:39,978 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=37944, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=51372, PETRI_PLACES=108, PETRI_TRANSITIONS=1763} [2021-03-12 00:34:39,979 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2021-03-12 00:34:39,979 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 1763 transitions, 51372 flow [2021-03-12 00:34:39,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:39,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:39,979 INFO L255 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] [2021-03-12 00:34:39,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-12 00:34:39,979 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:39,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:39,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2137063710, now seen corresponding path program 17 times [2021-03-12 00:34:39,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:39,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767465694] [2021-03-12 00:34:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:39,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:39,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:39,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:39,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:40,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:34:40,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:40,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:34:40,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:40,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:34:40,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:40,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:40,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:40,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:40,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767465694] [2021-03-12 00:34:40,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:40,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:34:40,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829602004] [2021-03-12 00:34:40,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:40,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:40,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:40,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:40,031 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:40,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 1763 transitions, 51372 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:40,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:40,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:40,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:34:48,376 INFO L129 PetriNetUnfolder]: 17870/27666 cut-off events. [2021-03-12 00:34:48,376 INFO L130 PetriNetUnfolder]: For 384184/389494 co-relation queries the response was YES. [2021-03-12 00:34:48,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262859 conditions, 27666 events. 17870/27666 cut-off events. For 384184/389494 co-relation queries the response was YES. Maximal size of possible extension queue 2192. Compared 211898 event pairs, 844 based on Foata normal form. 363/28010 useless extension candidates. Maximal degree in co-relation 261934. Up to 13435 conditions per place. [2021-03-12 00:34:48,632 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 359 selfloop transitions, 1539 changer transitions 0/1911 dead transitions. [2021-03-12 00:34:48,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 1911 transitions, 56871 flow [2021-03-12 00:34:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:34:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:34:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:34:48,633 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:34:48,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:34:48,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:34:48,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:34:48,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:34:48,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:48,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:48,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:48,635 INFO L185 Difference]: Start difference. First operand has 108 places, 1763 transitions, 51372 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:34:48,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 1911 transitions, 56871 flow [2021-03-12 00:34:50,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 1911 transitions, 54839 flow, removed 154 selfloop flow, removed 4 redundant places. [2021-03-12 00:34:50,528 INFO L241 Difference]: Finished difference. Result has 112 places, 1858 transitions, 56497 flow [2021-03-12 00:34:50,529 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=49348, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56497, PETRI_PLACES=112, PETRI_TRANSITIONS=1858} [2021-03-12 00:34:50,529 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2021-03-12 00:34:50,529 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 1858 transitions, 56497 flow [2021-03-12 00:34:50,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:50,530 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:34:50,530 INFO L255 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] [2021-03-12 00:34:50,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-12 00:34:50,530 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:34:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:34:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -814930902, now seen corresponding path program 18 times [2021-03-12 00:34:50,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:34:50,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511428291] [2021-03-12 00:34:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:34:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:34:50,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:34:50,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:50,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:50,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:50,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:34:50,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:34:50,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:34:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:34:50,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511428291] [2021-03-12 00:34:50,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:34:50,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:34:50,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996625848] [2021-03-12 00:34:50,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:34:50,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:34:50,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:34:50,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:34:50,567 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:34:50,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 1858 transitions, 56497 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:34:50,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:34:50,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:34:50,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:00,508 INFO L129 PetriNetUnfolder]: 18332/28754 cut-off events. [2021-03-12 00:35:00,508 INFO L130 PetriNetUnfolder]: For 526060/531777 co-relation queries the response was YES. [2021-03-12 00:35:00,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293303 conditions, 28754 events. 18332/28754 cut-off events. For 526060/531777 co-relation queries the response was YES. Maximal size of possible extension queue 2327. Compared 226060 event pairs, 856 based on Foata normal form. 803/29539 useless extension candidates. Maximal degree in co-relation 292205. Up to 15602 conditions per place. [2021-03-12 00:35:00,766 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 427 selfloop transitions, 1598 changer transitions 0/2038 dead transitions. [2021-03-12 00:35:00,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 2038 transitions, 66005 flow [2021-03-12 00:35:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:35:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:35:00,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:35:00,767 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:35:00,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:35:00,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:35:00,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:00,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:35:00,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:00,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:00,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:00,769 INFO L185 Difference]: Start difference. First operand has 112 places, 1858 transitions, 56497 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:35:00,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 2038 transitions, 66005 flow [2021-03-12 00:35:03,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 2038 transitions, 65953 flow, removed 23 selfloop flow, removed 1 redundant places. [2021-03-12 00:35:03,192 INFO L241 Difference]: Finished difference. Result has 116 places, 2006 transitions, 64557 flow [2021-03-12 00:35:03,193 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=56034, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1437, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64557, PETRI_PLACES=116, PETRI_TRANSITIONS=2006} [2021-03-12 00:35:03,193 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2021-03-12 00:35:03,193 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 2006 transitions, 64557 flow [2021-03-12 00:35:03,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:03,193 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:03,194 INFO L255 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] [2021-03-12 00:35:03,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-12 00:35:03,194 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1880389264, now seen corresponding path program 19 times [2021-03-12 00:35:03,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:03,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225889980] [2021-03-12 00:35:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:03,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:03,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:03,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:03,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:03,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:03,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:03,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:03,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:03,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225889980] [2021-03-12 00:35:03,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:03,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:35:03,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595071644] [2021-03-12 00:35:03,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:35:03,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:03,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:35:03,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:35:03,232 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:35:03,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 2006 transitions, 64557 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:03,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:03,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:35:03,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:14,314 INFO L129 PetriNetUnfolder]: 18712/29260 cut-off events. [2021-03-12 00:35:14,315 INFO L130 PetriNetUnfolder]: For 555568/561745 co-relation queries the response was YES. [2021-03-12 00:35:14,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305636 conditions, 29260 events. 18712/29260 cut-off events. For 555568/561745 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 230252 event pairs, 754 based on Foata normal form. 447/29688 useless extension candidates. Maximal degree in co-relation 304689. Up to 12960 conditions per place. [2021-03-12 00:35:14,587 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 359 selfloop transitions, 1718 changer transitions 0/2090 dead transitions. [2021-03-12 00:35:14,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 2090 transitions, 69922 flow [2021-03-12 00:35:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:35:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:35:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:35:14,588 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:35:14,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:35:14,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:35:14,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:14,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:35:14,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:14,590 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:14,590 INFO L185 Difference]: Start difference. First operand has 116 places, 2006 transitions, 64557 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:35:14,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 2090 transitions, 69922 flow [2021-03-12 00:35:16,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 2090 transitions, 68291 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:35:16,877 INFO L241 Difference]: Finished difference. Result has 119 places, 2040 transitions, 67722 flow [2021-03-12 00:35:16,879 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=62926, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=67722, PETRI_PLACES=119, PETRI_TRANSITIONS=2040} [2021-03-12 00:35:16,879 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 73 predicate places. [2021-03-12 00:35:16,879 INFO L480 AbstractCegarLoop]: Abstraction has has 119 places, 2040 transitions, 67722 flow [2021-03-12 00:35:16,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:16,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:16,880 INFO L255 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] [2021-03-12 00:35:16,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-12 00:35:16,880 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1590763608, now seen corresponding path program 20 times [2021-03-12 00:35:16,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:16,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707515477] [2021-03-12 00:35:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:16,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:16,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:16,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:16,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:16,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707515477] [2021-03-12 00:35:16,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:16,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:35:16,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169229064] [2021-03-12 00:35:16,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:35:16,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:16,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:35:16,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:35:16,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:35:16,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 2040 transitions, 67722 flow. Second operand has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:16,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:16,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:35:16,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:28,857 INFO L129 PetriNetUnfolder]: 18803/29663 cut-off events. [2021-03-12 00:35:28,857 INFO L130 PetriNetUnfolder]: For 631461/637900 co-relation queries the response was YES. [2021-03-12 00:35:28,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321794 conditions, 29663 events. 18803/29663 cut-off events. For 631461/637900 co-relation queries the response was YES. Maximal size of possible extension queue 2413. Compared 236345 event pairs, 590 based on Foata normal form. 204/29848 useless extension candidates. Maximal degree in co-relation 320693. Up to 13081 conditions per place. [2021-03-12 00:35:29,116 INFO L132 encePairwiseOnDemand]: 59/73 looper letters, 233 selfloop transitions, 2221 changer transitions 0/2467 dead transitions. [2021-03-12 00:35:29,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 2467 transitions, 86018 flow [2021-03-12 00:35:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-12 00:35:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-12 00:35:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 489 transitions. [2021-03-12 00:35:29,117 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6089663760896638 [2021-03-12 00:35:29,117 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 489 transitions. [2021-03-12 00:35:29,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 489 transitions. [2021-03-12 00:35:29,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:29,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 489 transitions. [2021-03-12 00:35:29,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 44.45454545454545) internal successors, (489), 11 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:29,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:29,120 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:29,120 INFO L185 Difference]: Start difference. First operand has 119 places, 2040 transitions, 67722 flow. Second operand 11 states and 489 transitions. [2021-03-12 00:35:29,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 2467 transitions, 86018 flow [2021-03-12 00:35:31,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 2467 transitions, 83916 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:35:31,769 INFO L241 Difference]: Finished difference. Result has 129 places, 2457 transitions, 85282 flow [2021-03-12 00:35:31,771 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=65968, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=85282, PETRI_PLACES=129, PETRI_TRANSITIONS=2457} [2021-03-12 00:35:31,771 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2021-03-12 00:35:31,771 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 2457 transitions, 85282 flow [2021-03-12 00:35:31,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:31,771 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:31,771 INFO L255 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] [2021-03-12 00:35:31,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-12 00:35:31,771 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:31,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:31,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2045751216, now seen corresponding path program 21 times [2021-03-12 00:35:31,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:31,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904943844] [2021-03-12 00:35:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:31,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:31,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:31,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:31,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:31,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:31,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:31,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:31,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:31,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904943844] [2021-03-12 00:35:31,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:31,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:35:31,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713692310] [2021-03-12 00:35:31,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:35:31,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:31,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:35:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:35:31,808 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:35:31,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 2457 transitions, 85282 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:31,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:31,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:35:31,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:35:47,555 INFO L129 PetriNetUnfolder]: 19628/31260 cut-off events. [2021-03-12 00:35:47,555 INFO L130 PetriNetUnfolder]: For 921073/927421 co-relation queries the response was YES. [2021-03-12 00:35:47,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358582 conditions, 31260 events. 19628/31260 cut-off events. For 921073/927421 co-relation queries the response was YES. Maximal size of possible extension queue 2686. Compared 256956 event pairs, 1151 based on Foata normal form. 1266/32509 useless extension candidates. Maximal degree in co-relation 357582. Up to 13690 conditions per place. [2021-03-12 00:35:47,870 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 448 selfloop transitions, 2323 changer transitions 0/2784 dead transitions. [2021-03-12 00:35:47,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 2784 transitions, 101093 flow [2021-03-12 00:35:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:35:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:35:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:35:47,872 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:35:47,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:35:47,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:35:47,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:35:47,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:35:47,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:47,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:47,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:47,873 INFO L185 Difference]: Start difference. First operand has 129 places, 2457 transitions, 85282 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:35:47,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 2784 transitions, 101093 flow [2021-03-12 00:35:51,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 2784 transitions, 100947 flow, removed 70 selfloop flow, removed 1 redundant places. [2021-03-12 00:35:51,992 INFO L241 Difference]: Finished difference. Result has 134 places, 2734 transitions, 100581 flow [2021-03-12 00:35:51,993 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=83498, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2004, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100581, PETRI_PLACES=134, PETRI_TRANSITIONS=2734} [2021-03-12 00:35:51,993 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 88 predicate places. [2021-03-12 00:35:51,993 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 2734 transitions, 100581 flow [2021-03-12 00:35:51,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:51,994 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:35:51,994 INFO L255 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] [2021-03-12 00:35:51,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-12 00:35:51,994 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:35:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:35:51,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1713002684, now seen corresponding path program 22 times [2021-03-12 00:35:51,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:35:51,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228165907] [2021-03-12 00:35:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:35:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:35:52,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:35:52,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:52,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:52,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:35:52,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:35:52,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:35:52,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:35:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:35:52,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228165907] [2021-03-12 00:35:52,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:35:52,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:35:52,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787911188] [2021-03-12 00:35:52,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:35:52,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:35:52,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:35:52,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:35:52,030 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:35:52,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 2734 transitions, 100581 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:35:52,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:35:52,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:35:52,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:36:09,848 INFO L129 PetriNetUnfolder]: 19778/31653 cut-off events. [2021-03-12 00:36:09,848 INFO L130 PetriNetUnfolder]: For 866129/872853 co-relation queries the response was YES. [2021-03-12 00:36:09,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389531 conditions, 31653 events. 19778/31653 cut-off events. For 866129/872853 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 262046 event pairs, 750 based on Foata normal form. 600/32236 useless extension candidates. Maximal degree in co-relation 388561. Up to 13549 conditions per place. [2021-03-12 00:36:10,157 INFO L132 encePairwiseOnDemand]: 59/73 looper letters, 447 selfloop transitions, 2461 changer transitions 0/2921 dead transitions. [2021-03-12 00:36:10,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 2921 transitions, 111817 flow [2021-03-12 00:36:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:36:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:36:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2021-03-12 00:36:10,158 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2021-03-12 00:36:10,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 266 transitions. [2021-03-12 00:36:10,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 266 transitions. [2021-03-12 00:36:10,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:36:10,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 266 transitions. [2021-03-12 00:36:10,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:10,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:10,159 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:10,159 INFO L185 Difference]: Start difference. First operand has 134 places, 2734 transitions, 100581 flow. Second operand 6 states and 266 transitions. [2021-03-12 00:36:10,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 2921 transitions, 111817 flow [2021-03-12 00:36:14,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 2921 transitions, 110869 flow, removed 217 selfloop flow, removed 3 redundant places. [2021-03-12 00:36:15,017 INFO L241 Difference]: Finished difference. Result has 138 places, 2878 transitions, 111620 flow [2021-03-12 00:36:15,019 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=99624, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111620, PETRI_PLACES=138, PETRI_TRANSITIONS=2878} [2021-03-12 00:36:15,019 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2021-03-12 00:36:15,019 INFO L480 AbstractCegarLoop]: Abstraction has has 138 places, 2878 transitions, 111620 flow [2021-03-12 00:36:15,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:15,020 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:36:15,020 INFO L255 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] [2021-03-12 00:36:15,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-12 00:36:15,020 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:36:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:36:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1692464216, now seen corresponding path program 23 times [2021-03-12 00:36:15,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:36:15,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335907849] [2021-03-12 00:36:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:36:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:36:15,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:36:15,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:15,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:15,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:36:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:36:15,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335907849] [2021-03-12 00:36:15,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:36:15,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:36:15,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483065833] [2021-03-12 00:36:15,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:36:15,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:36:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:36:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:36:15,051 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:36:15,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 2878 transitions, 111620 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:15,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:36:15,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:36:15,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:36:35,117 INFO L129 PetriNetUnfolder]: 19882/32171 cut-off events. [2021-03-12 00:36:35,117 INFO L130 PetriNetUnfolder]: For 1042659/1049886 co-relation queries the response was YES. [2021-03-12 00:36:35,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420904 conditions, 32171 events. 19882/32171 cut-off events. For 1042659/1049886 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 271950 event pairs, 810 based on Foata normal form. 1041/33193 useless extension candidates. Maximal degree in co-relation 419914. Up to 16706 conditions per place. [2021-03-12 00:36:35,440 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 651 selfloop transitions, 2460 changer transitions 0/3124 dead transitions. [2021-03-12 00:36:35,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 3124 transitions, 127791 flow [2021-03-12 00:36:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:36:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:36:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:36:35,441 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:36:35,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:36:35,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:36:35,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:36:35,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:36:35,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:35,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:35,443 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:35,443 INFO L185 Difference]: Start difference. First operand has 138 places, 2878 transitions, 111620 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:36:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 3124 transitions, 127791 flow [2021-03-12 00:36:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 3124 transitions, 124961 flow, removed 52 selfloop flow, removed 3 redundant places. [2021-03-12 00:36:41,268 INFO L241 Difference]: Finished difference. Result has 140 places, 3089 transitions, 122923 flow [2021-03-12 00:36:41,270 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=106858, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122923, PETRI_PLACES=140, PETRI_TRANSITIONS=3089} [2021-03-12 00:36:41,270 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 94 predicate places. [2021-03-12 00:36:41,270 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 3089 transitions, 122923 flow [2021-03-12 00:36:41,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:41,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:36:41,271 INFO L255 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] [2021-03-12 00:36:41,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-12 00:36:41,271 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:36:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:36:41,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2049078708, now seen corresponding path program 24 times [2021-03-12 00:36:41,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:36:41,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320764123] [2021-03-12 00:36:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:36:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:36:41,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:36:41,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:36:41,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:36:41,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:36:41,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:36:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:36:41,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320764123] [2021-03-12 00:36:41,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:36:41,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:36:41,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268484191] [2021-03-12 00:36:41,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:36:41,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:36:41,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:36:41,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:36:41,324 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:36:41,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 3089 transitions, 122923 flow. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:36:41,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:36:41,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:36:41,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:37:05,762 INFO L129 PetriNetUnfolder]: 20238/33396 cut-off events. [2021-03-12 00:37:05,762 INFO L130 PetriNetUnfolder]: For 1097098/1106556 co-relation queries the response was YES. [2021-03-12 00:37:05,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 427568 conditions, 33396 events. 20238/33396 cut-off events. For 1097098/1106556 co-relation queries the response was YES. Maximal size of possible extension queue 3143. Compared 292172 event pairs, 136 based on Foata normal form. 1746/35118 useless extension candidates. Maximal degree in co-relation 426524. Up to 13302 conditions per place. [2021-03-12 00:37:06,091 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 124 selfloop transitions, 3317 changer transitions 0/3454 dead transitions. [2021-03-12 00:37:06,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 3454 transitions, 140513 flow [2021-03-12 00:37:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:37:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:37:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 410 transitions. [2021-03-12 00:37:06,092 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.624048706240487 [2021-03-12 00:37:06,092 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 410 transitions. [2021-03-12 00:37:06,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 410 transitions. [2021-03-12 00:37:06,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:37:06,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 410 transitions. [2021-03-12 00:37:06,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:06,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:06,094 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:06,094 INFO L185 Difference]: Start difference. First operand has 140 places, 3089 transitions, 122923 flow. Second operand 9 states and 410 transitions. [2021-03-12 00:37:06,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 3454 transitions, 140513 flow [2021-03-12 00:37:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 3454 transitions, 137859 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:37:11,845 INFO L241 Difference]: Finished difference. Result has 146 places, 3408 transitions, 138055 flow [2021-03-12 00:37:11,847 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=118479, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2953, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138055, PETRI_PLACES=146, PETRI_TRANSITIONS=3408} [2021-03-12 00:37:11,847 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 100 predicate places. [2021-03-12 00:37:11,847 INFO L480 AbstractCegarLoop]: Abstraction has has 146 places, 3408 transitions, 138055 flow [2021-03-12 00:37:11,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:11,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:37:11,848 INFO L255 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] [2021-03-12 00:37:11,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-12 00:37:11,848 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:37:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:37:11,848 INFO L82 PathProgramCache]: Analyzing trace with hash -460231360, now seen corresponding path program 25 times [2021-03-12 00:37:11,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:37:11,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127822583] [2021-03-12 00:37:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:37:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:37:11,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:37:11,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:11,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:37:11,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:11,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:37:11,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:11,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:11,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:11,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:11,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:12,032 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-03-12 00:37:12,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:12,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:12,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:12,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:12,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:12,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:37:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:37:12,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127822583] [2021-03-12 00:37:12,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:37:12,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:37:12,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932512157] [2021-03-12 00:37:12,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:37:12,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:37:12,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:37:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:37:12,049 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:37:12,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 3408 transitions, 138055 flow. Second operand has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:12,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:37:12,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:37:12,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:37:44,193 INFO L129 PetriNetUnfolder]: 23980/39966 cut-off events. [2021-03-12 00:37:44,194 INFO L130 PetriNetUnfolder]: For 1359708/1367411 co-relation queries the response was YES. [2021-03-12 00:37:44,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552312 conditions, 39966 events. 23980/39966 cut-off events. For 1359708/1367411 co-relation queries the response was YES. Maximal size of possible extension queue 4093. Compared 364610 event pairs, 154 based on Foata normal form. 2597/42546 useless extension candidates. Maximal degree in co-relation 551290. Up to 16983 conditions per place. [2021-03-12 00:37:44,593 INFO L132 encePairwiseOnDemand]: 59/73 looper letters, 179 selfloop transitions, 4425 changer transitions 57/4674 dead transitions. [2021-03-12 00:37:44,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 4674 transitions, 192718 flow [2021-03-12 00:37:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 00:37:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-12 00:37:44,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 592 transitions. [2021-03-12 00:37:44,594 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6238145416227608 [2021-03-12 00:37:44,594 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 592 transitions. [2021-03-12 00:37:44,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 592 transitions. [2021-03-12 00:37:44,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:37:44,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 592 transitions. [2021-03-12 00:37:44,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 45.53846153846154) internal successors, (592), 13 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:44,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:44,597 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:44,597 INFO L185 Difference]: Start difference. First operand has 146 places, 3408 transitions, 138055 flow. Second operand 13 states and 592 transitions. [2021-03-12 00:37:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 4674 transitions, 192718 flow [2021-03-12 00:37:53,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 4674 transitions, 186109 flow, removed 43 selfloop flow, removed 6 redundant places. [2021-03-12 00:37:53,621 INFO L241 Difference]: Finished difference. Result has 159 places, 4519 transitions, 188468 flow [2021-03-12 00:37:53,623 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132935, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=188468, PETRI_PLACES=159, PETRI_TRANSITIONS=4519} [2021-03-12 00:37:53,623 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 113 predicate places. [2021-03-12 00:37:53,623 INFO L480 AbstractCegarLoop]: Abstraction has has 159 places, 4519 transitions, 188468 flow [2021-03-12 00:37:53,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:53,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:37:53,624 INFO L255 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] [2021-03-12 00:37:53,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-12 00:37:53,624 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:37:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:37:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1993320614, now seen corresponding path program 26 times [2021-03-12 00:37:53,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:37:53,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897781716] [2021-03-12 00:37:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:37:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:37:53,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:37:53,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:37:53,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:37:53,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:37:53,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:37:53,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:37:53,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:37:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:37:53,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897781716] [2021-03-12 00:37:53,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:37:53,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-12 00:37:53,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369887602] [2021-03-12 00:37:53,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-12 00:37:53,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:37:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-12 00:37:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-12 00:37:53,677 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:37:53,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 4519 transitions, 188468 flow. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:37:53,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:37:53,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:37:53,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:38:46,199 INFO L129 PetriNetUnfolder]: 25885/44121 cut-off events. [2021-03-12 00:38:46,200 INFO L130 PetriNetUnfolder]: For 1871062/1881043 co-relation queries the response was YES. [2021-03-12 00:38:46,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 640507 conditions, 44121 events. 25885/44121 cut-off events. For 1871062/1881043 co-relation queries the response was YES. Maximal size of possible extension queue 4690. Compared 421533 event pairs, 364 based on Foata normal form. 1766/45868 useless extension candidates. Maximal degree in co-relation 639374. Up to 18760 conditions per place. [2021-03-12 00:38:46,669 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 389 selfloop transitions, 5008 changer transitions 31/5441 dead transitions. [2021-03-12 00:38:46,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 5441 transitions, 229393 flow [2021-03-12 00:38:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 00:38:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-12 00:38:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 408 transitions. [2021-03-12 00:38:46,670 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6210045662100456 [2021-03-12 00:38:46,670 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 408 transitions. [2021-03-12 00:38:46,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 408 transitions. [2021-03-12 00:38:46,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:38:46,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 408 transitions. [2021-03-12 00:38:46,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.333333333333336) internal successors, (408), 9 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:46,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:46,672 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:38:46,672 INFO L185 Difference]: Start difference. First operand has 159 places, 4519 transitions, 188468 flow. Second operand 9 states and 408 transitions. [2021-03-12 00:38:46,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 5441 transitions, 229393 flow [2021-03-12 00:39:02,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 5441 transitions, 225528 flow, removed 944 selfloop flow, removed 6 redundant places. [2021-03-12 00:39:02,824 INFO L241 Difference]: Finished difference. Result has 166 places, 5325 transitions, 231203 flow [2021-03-12 00:39:02,826 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=182594, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=231203, PETRI_PLACES=166, PETRI_TRANSITIONS=5325} [2021-03-12 00:39:02,827 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2021-03-12 00:39:02,827 INFO L480 AbstractCegarLoop]: Abstraction has has 166 places, 5325 transitions, 231203 flow [2021-03-12 00:39:02,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:02,827 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:39:02,827 INFO L255 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] [2021-03-12 00:39:02,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-12 00:39:02,827 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:39:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:39:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash 303989520, now seen corresponding path program 27 times [2021-03-12 00:39:02,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:39:02,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042756042] [2021-03-12 00:39:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:39:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:39:02,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:39:02,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:39:02,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:39:02,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:39:02,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:39:02,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:39:02,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:39:02,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:39:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:39:02,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042756042] [2021-03-12 00:39:02,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:39:02,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:39:02,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315292202] [2021-03-12 00:39:02,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:39:02,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:39:02,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:39:02,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:39:02,860 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:39:02,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 5325 transitions, 231203 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:39:02,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:39:02,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:39:02,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:40:08,225 INFO L129 PetriNetUnfolder]: 25114/43404 cut-off events. [2021-03-12 00:40:08,226 INFO L130 PetriNetUnfolder]: For 2166897/2176433 co-relation queries the response was YES. [2021-03-12 00:40:08,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667350 conditions, 43404 events. 25114/43404 cut-off events. For 2166897/2176433 co-relation queries the response was YES. Maximal size of possible extension queue 4693. Compared 422310 event pairs, 1376 based on Foata normal form. 990/44377 useless extension candidates. Maximal degree in co-relation 666179. Up to 16210 conditions per place. [2021-03-12 00:40:08,741 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 1013 selfloop transitions, 4502 changer transitions 9/5537 dead transitions. [2021-03-12 00:40:08,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 5537 transitions, 247635 flow [2021-03-12 00:40:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:40:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-12 00:40:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 267 transitions. [2021-03-12 00:40:08,742 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2021-03-12 00:40:08,742 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 267 transitions. [2021-03-12 00:40:08,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 267 transitions. [2021-03-12 00:40:08,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:40:08,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 267 transitions. [2021-03-12 00:40:08,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:40:08,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:40:08,744 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:40:08,744 INFO L185 Difference]: Start difference. First operand has 166 places, 5325 transitions, 231203 flow. Second operand 6 states and 267 transitions. [2021-03-12 00:40:08,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 5537 transitions, 247635 flow [2021-03-12 00:40:31,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 5537 transitions, 245610 flow, removed 77 selfloop flow, removed 2 redundant places. [2021-03-12 00:40:31,675 INFO L241 Difference]: Finished difference. Result has 170 places, 5482 transitions, 245352 flow [2021-03-12 00:40:31,679 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=228409, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=977, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245352, PETRI_PLACES=170, PETRI_TRANSITIONS=5482} [2021-03-12 00:40:31,679 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2021-03-12 00:40:31,680 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 5482 transitions, 245352 flow [2021-03-12 00:40:31,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:40:31,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:40:31,680 INFO L255 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] [2021-03-12 00:40:31,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-12 00:40:31,680 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:40:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:40:31,680 INFO L82 PathProgramCache]: Analyzing trace with hash -325522892, now seen corresponding path program 28 times [2021-03-12 00:40:31,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:40:31,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426633559] [2021-03-12 00:40:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:40:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:40:31,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:40:31,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:40:31,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:40:31,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:40:31,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:40:31,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:40:31,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:40:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:40:31,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426633559] [2021-03-12 00:40:31,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:40:31,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-12 00:40:31,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989620310] [2021-03-12 00:40:31,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 00:40:31,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:40:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 00:40:31,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-12 00:40:31,712 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:40:31,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 5482 transitions, 245352 flow. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:40:31,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:40:31,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:40:31,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:41:51,134 INFO L129 PetriNetUnfolder]: 25193/44126 cut-off events. [2021-03-12 00:41:51,134 INFO L130 PetriNetUnfolder]: For 2289116/2303658 co-relation queries the response was YES. [2021-03-12 00:41:51,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 709634 conditions, 44126 events. 25193/44126 cut-off events. For 2289116/2303658 co-relation queries the response was YES. Maximal size of possible extension queue 4939. Compared 438545 event pairs, 1326 based on Foata normal form. 1653/45754 useless extension candidates. Maximal degree in co-relation 708528. Up to 24080 conditions per place. [2021-03-12 00:41:51,685 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 1786 selfloop transitions, 4186 changer transitions 6/5991 dead transitions. [2021-03-12 00:41:51,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 5991 transitions, 282059 flow [2021-03-12 00:41:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-12 00:41:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-12 00:41:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 360 transitions. [2021-03-12 00:41:51,687 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6164383561643836 [2021-03-12 00:41:51,687 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 360 transitions. [2021-03-12 00:41:51,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 360 transitions. [2021-03-12 00:41:51,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:41:51,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 360 transitions. [2021-03-12 00:41:51,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:51,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:51,688 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:41:51,688 INFO L185 Difference]: Start difference. First operand has 170 places, 5482 transitions, 245352 flow. Second operand 8 states and 360 transitions. [2021-03-12 00:41:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 5991 transitions, 282059 flow [2021-03-12 00:42:18,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 5991 transitions, 276905 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:42:18,290 INFO L241 Difference]: Finished difference. Result has 174 places, 5925 transitions, 271578 flow [2021-03-12 00:42:18,295 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=236072, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3651, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1745, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271578, PETRI_PLACES=174, PETRI_TRANSITIONS=5925} [2021-03-12 00:42:18,295 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 128 predicate places. [2021-03-12 00:42:18,295 INFO L480 AbstractCegarLoop]: Abstraction has has 174 places, 5925 transitions, 271578 flow [2021-03-12 00:42:18,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:42:18,295 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:42:18,295 INFO L255 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] [2021-03-12 00:42:18,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-12 00:42:18,296 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:42:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:42:18,296 INFO L82 PathProgramCache]: Analyzing trace with hash -541087334, now seen corresponding path program 29 times [2021-03-12 00:42:18,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:42:18,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502675940] [2021-03-12 00:42:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:42:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:42:18,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:42:18,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:42:18,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:42:18,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:42:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:42:18,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502675940] [2021-03-12 00:42:18,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:42:18,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-12 00:42:18,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966231531] [2021-03-12 00:42:18,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 00:42:18,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:42:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 00:42:18,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-12 00:42:18,343 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:42:18,344 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 5925 transitions, 271578 flow. Second operand has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:42:18,344 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:42:18,344 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:42:18,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:43:40,818 INFO L129 PetriNetUnfolder]: 25521/44996 cut-off events. [2021-03-12 00:43:40,818 INFO L130 PetriNetUnfolder]: For 2304881/2315459 co-relation queries the response was YES. [2021-03-12 00:43:41,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724638 conditions, 44996 events. 25521/44996 cut-off events. For 2304881/2315459 co-relation queries the response was YES. Maximal size of possible extension queue 5142. Compared 450712 event pairs, 956 based on Foata normal form. 601/45578 useless extension candidates. Maximal degree in co-relation 723436. Up to 16672 conditions per place. [2021-03-12 00:43:41,352 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 1215 selfloop transitions, 5120 changer transitions 11/6359 dead transitions. [2021-03-12 00:43:41,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 6359 transitions, 305453 flow [2021-03-12 00:43:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 00:43:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-12 00:43:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 455 transitions. [2021-03-12 00:43:41,353 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2021-03-12 00:43:41,353 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 455 transitions. [2021-03-12 00:43:41,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 455 transitions. [2021-03-12 00:43:41,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:43:41,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 455 transitions. [2021-03-12 00:43:41,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.5) internal successors, (455), 10 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:43:41,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:43:41,355 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:43:41,355 INFO L185 Difference]: Start difference. First operand has 174 places, 5925 transitions, 271578 flow. Second operand 10 states and 455 transitions. [2021-03-12 00:43:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 6359 transitions, 305453 flow [2021-03-12 00:44:11,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 6359 transitions, 300643 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-12 00:44:11,927 INFO L241 Difference]: Finished difference. Result has 180 places, 6322 transitions, 297109 flow [2021-03-12 00:44:11,932 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=267217, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5925, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4718, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297109, PETRI_PLACES=180, PETRI_TRANSITIONS=6322} [2021-03-12 00:44:11,932 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 134 predicate places. [2021-03-12 00:44:11,932 INFO L480 AbstractCegarLoop]: Abstraction has has 180 places, 6322 transitions, 297109 flow [2021-03-12 00:44:11,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:44:11,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:44:11,932 INFO L255 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] [2021-03-12 00:44:11,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-12 00:44:11,933 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:44:11,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:44:11,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1919714350, now seen corresponding path program 30 times [2021-03-12 00:44:11,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:44:11,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336342728] [2021-03-12 00:44:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:44:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:44:11,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:44:11,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:44:11,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-12 00:44:11,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:44:11,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:44:11,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:44:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:44:11,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336342728] [2021-03-12 00:44:11,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:44:11,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-12 00:44:11,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820137594] [2021-03-12 00:44:11,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-12 00:44:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:44:11,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-12 00:44:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-12 00:44:11,989 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:44:11,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 6322 transitions, 297109 flow. Second operand has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:44:11,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:44:11,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:44:11,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-12 00:45:54,046 INFO L129 PetriNetUnfolder]: 27194/48450 cut-off events. [2021-03-12 00:45:54,047 INFO L130 PetriNetUnfolder]: For 2544186/2554630 co-relation queries the response was YES. [2021-03-12 00:45:54,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 797554 conditions, 48450 events. 27194/48450 cut-off events. For 2544186/2554630 co-relation queries the response was YES. Maximal size of possible extension queue 5578. Compared 498363 event pairs, 217 based on Foata normal form. 1297/49724 useless extension candidates. Maximal degree in co-relation 796350. Up to 17811 conditions per place. [2021-03-12 00:45:54,632 INFO L132 encePairwiseOnDemand]: 60/73 looper letters, 180 selfloop transitions, 7088 changer transitions 65/7346 dead transitions. [2021-03-12 00:45:54,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 7346 transitions, 350852 flow [2021-03-12 00:45:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 00:45:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-12 00:45:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 595 transitions. [2021-03-12 00:45:54,634 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6269757639620653 [2021-03-12 00:45:54,634 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 595 transitions. [2021-03-12 00:45:54,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 595 transitions. [2021-03-12 00:45:54,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-12 00:45:54,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 595 transitions. [2021-03-12 00:45:54,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 45.76923076923077) internal successors, (595), 13 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:54,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:54,635 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:45:54,635 INFO L185 Difference]: Start difference. First operand has 180 places, 6322 transitions, 297109 flow. Second operand 13 states and 595 transitions. [2021-03-12 00:45:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 7346 transitions, 350852 flow [2021-03-12 00:46:30,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 7346 transitions, 338268 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-12 00:46:30,514 INFO L241 Difference]: Finished difference. Result has 186 places, 7179 transitions, 333535 flow [2021-03-12 00:46:30,518 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=285650, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=333535, PETRI_PLACES=186, PETRI_TRANSITIONS=7179} [2021-03-12 00:46:30,519 INFO L335 CegarLoopForPetriNet]: 46 programPoint places, 140 predicate places. [2021-03-12 00:46:30,519 INFO L480 AbstractCegarLoop]: Abstraction has has 186 places, 7179 transitions, 333535 flow [2021-03-12 00:46:30,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 36.4) internal successors, (364), 10 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:30,519 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-12 00:46:30,519 INFO L255 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] [2021-03-12 00:46:30,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-12 00:46:30,519 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-12 00:46:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 00:46:30,520 INFO L82 PathProgramCache]: Analyzing trace with hash 641529516, now seen corresponding path program 31 times [2021-03-12 00:46:30,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 00:46:30,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311944655] [2021-03-12 00:46:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 00:46:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 00:46:30,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-12 00:46:30,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:30,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:30,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:30,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-12 00:46:30,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 00:46:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-12 00:46:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 00:46:30,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311944655] [2021-03-12 00:46:30,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 00:46:30,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-12 00:46:30,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341645048] [2021-03-12 00:46:30,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-12 00:46:30,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 00:46:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-12 00:46:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-12 00:46:30,546 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 73 [2021-03-12 00:46:30,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 7179 transitions, 333535 flow. Second operand has 6 states, 6 states have (on average 37.333333333333336) internal successors, (224), 6 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 00:46:30,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-12 00:46:30,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 73 [2021-03-12 00:46:30,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-12 00:47:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-12 00:47:21,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-12 00:47:21,418 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-12 00:47:21,421 WARN L224 ceAbstractionStarter]: Timeout [2021-03-12 00:47:21,421 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.03 12:47:21 BasicIcfg [2021-03-12 00:47:21,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-12 00:47:21,421 INFO L168 Benchmark]: Toolchain (without parser) took 833502.92 ms. Allocated memory was 381.7 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 361.4 MB in the beginning and 5.8 GB in the end (delta: -5.4 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 381.7 MB. Free memory was 362.6 MB in the beginning and 362.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.23 ms. Allocated memory is still 381.7 MB. Free memory was 360.8 MB in the beginning and 359.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L168 Benchmark]: Boogie Preprocessor took 12.86 ms. Allocated memory is still 381.7 MB. Free memory was 359.4 MB in the beginning and 358.4 MB in the end (delta: 981.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L168 Benchmark]: RCFGBuilder took 236.92 ms. Allocated memory is still 381.7 MB. Free memory was 358.3 MB in the beginning and 342.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L168 Benchmark]: TraceAbstraction took 833217.11 ms. Allocated memory was 381.7 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 341.8 MB in the beginning and 5.8 GB in the end (delta: -5.4 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. [2021-03-12 00:47:21,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 381.7 MB. Free memory was 362.6 MB in the beginning and 362.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.23 ms. Allocated memory is still 381.7 MB. Free memory was 360.8 MB in the beginning and 359.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.86 ms. Allocated memory is still 381.7 MB. Free memory was 359.4 MB in the beginning and 358.4 MB in the end (delta: 981.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 236.92 ms. Allocated memory is still 381.7 MB. Free memory was 358.3 MB in the beginning and 342.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 833217.11 ms. Allocated memory was 381.7 MB in the beginning and 11.5 GB in the end (delta: 11.1 GB). Free memory was 341.8 MB in the beginning and 5.8 GB in the end (delta: -5.4 GB). Peak memory consumption was 6.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1561.9ms, 65 PlacesBefore, 46 PlacesAfterwards, 46 TransitionsBefore, 27 TransitionsAfterwards, 1110 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 2371 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1154, positive: 1076, positive conditional: 0, positive unconditional: 1076, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 795, positive: 743, positive conditional: 0, positive unconditional: 743, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 795, positive: 656, positive conditional: 0, positive unconditional: 656, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 139, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 543, positive: 347, positive conditional: 0, positive unconditional: 347, negative: 196, negative conditional: 0, negative unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1154, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 795, unknown conditional: 0, unknown unconditional: 795] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 110). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (6states, 35/73 universal loopers) in iteration 31,while PetriNetUnfolder was constructing finite prefix that currently has 247865 conditions, 13717 events (7132/13716 cut-off events. For 1140984/1151409 co-relation queries the response was YES. Maximal size of possible extension queue 5451. Compared 162682 event pairs, 454 based on Foata normal form. 773/19851 useless extension candidates. Maximal degree in co-relation 247796. Up to 6249 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 833105.8ms, OverallIterations: 31, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 829524.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1661.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 107 SDslu, 25 SDs, 0 SdLazy, 5577 SolverSat, 1109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2753.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 993.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=333535occurred in iteration=30, InterpolantAutomatonStates: 213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.3ms SsaConstructionTime, 263.5ms SatisfiabilityAnalysisTime, 1355.0ms InterpolantComputationTime, 837 NumberOfCodeBlocks, 837 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown