/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:32:17,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:32:17,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:32:18,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 08:32:18,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 08:32:18,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 08:32:18,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 08:32:18,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 08:32:18,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 08:32:18,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 08:32:18,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 08:32:18,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 08:32:18,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:32:18,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:32:18,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:32:18,097 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-NoLbe.epf [2021-06-13 08:32:18,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:32:18,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:32:18,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:32:18,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:32:18,132 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:32:18,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:32:18,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:32:18,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:32:18,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:32:18,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:32:18,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:32:18,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:32:18,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:32:18,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:32:18,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:32:18,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:32:18,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:32:18,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:32:18,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:32:18,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:32:18,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:32:18,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:32:18,136 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:32:18,136 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:32:18,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:32:18,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:32:18,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:32:18,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:32:18,456 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:32:18,459 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:32:18,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl [2021-06-13 08:32:18,460 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl' [2021-06-13 08:32:18,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:32:18,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:32:18,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:32:18,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:32:18,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:32:18,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:32:18,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:32:18,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:32:18,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:32:18,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/1) ... [2021-06-13 08:32:18,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:32:18,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:32:18,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:32:18,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:32:18,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (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 [2021-06-13 08:32:18,598 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-13 08:32:18,598 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-13 08:32:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-13 08:32:18,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-13 08:32:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-13 08:32:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-13 08:32:18,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-13 08:32:18,599 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-13 08:32:18,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-13 08:32:18,600 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-13 08:32:18,600 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-13 08:32:18,600 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-13 08:32:18,600 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-13 08:32:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-13 08:32:18,601 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-13 08:32:18,601 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:32:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:32:18,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:32:18,601 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-13 08:32:18,601 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-13 08:32:18,601 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-13 08:32:18,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-13 08:32:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-13 08:32:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-13 08:32:18,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-13 08:32:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-13 08:32:18,602 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-13 08:32:18,602 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-13 08:32:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-13 08:32:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-13 08:32:18,604 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:32:18,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:32:18,729 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:32:18,731 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:32:18 BoogieIcfgContainer [2021-06-13 08:32:18,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:32:18,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:32:18,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:32:18,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:32:18,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:32:18" (1/2) ... [2021-06-13 08:32:18,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3546f815 and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:32:18, skipping insertion in model container [2021-06-13 08:32:18,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:32:18" (2/2) ... [2021-06-13 08:32:18,737 INFO L111 eAbstractionObserver]: Analyzing ICFG example_9.bpl [2021-06-13 08:32:18,742 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:32:18,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:32:18,742 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:32:18,860 INFO L149 ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions. [2021-06-13 08:32:18,878 INFO L255 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-06-13 08:32:18,896 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:32:18,896 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:32:18,896 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:32:18,896 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:32:18,896 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:32:18,896 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:32:18,896 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:32:18,896 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:32:18,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions, 528 flow [2021-06-13 08:32:19,287 INFO L129 PetriNetUnfolder]: 1793/2334 cut-off events. [2021-06-13 08:32:19,287 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-06-13 08:32:19,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2334 events. 1793/2334 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8911 event pairs, 0 based on Foata normal form. 0/2333 useless extension candidates. Maximal degree in co-relation 2090. Up to 630 conditions per place. [2021-06-13 08:32:19,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 120 transitions, 528 flow [2021-06-13 08:32:19,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 109 transitions, 488 flow [2021-06-13 08:32:19,515 INFO L129 PetriNetUnfolder]: 1793/2331 cut-off events. [2021-06-13 08:32:19,515 INFO L130 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2021-06-13 08:32:19,515 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:19,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:19,516 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash -558412521, now seen corresponding path program 1 times [2021-06-13 08:32:19,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:19,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999604930] [2021-06-13 08:32:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:19,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:19,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:19,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:19,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:19,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:19,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:19,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:19,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999604930] [2021-06-13 08:32:19,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999604930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:19,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:19,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:19,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291832252] [2021-06-13 08:32:19,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:19,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:19,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:19,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:19,740 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:19,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 109 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:19,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:19,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:19,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:19,946 INFO L129 PetriNetUnfolder]: 1281/1727 cut-off events. [2021-06-13 08:32:19,947 INFO L130 PetriNetUnfolder]: For 2305/2305 co-relation queries the response was YES. [2021-06-13 08:32:19,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 1727 events. 1281/1727 cut-off events. For 2305/2305 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6691 event pairs, 0 based on Foata normal form. 93/1820 useless extension candidates. Maximal degree in co-relation 2078. Up to 504 conditions per place. [2021-06-13 08:32:19,967 INFO L132 encePairwiseOnDemand]: 115/120 looper letters, 5 selfloop transitions, 1 changer transitions 0/105 dead transitions. [2021-06-13 08:32:19,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 480 flow [2021-06-13 08:32:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:19,985 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:19,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:19,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:19,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:19,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:19,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,007 INFO L185 Difference]: Start difference. First operand has 65 places, 109 transitions, 488 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 480 flow [2021-06-13 08:32:20,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 105 transitions, 308 flow, removed 0 selfloop flow, removed 18 redundant places. [2021-06-13 08:32:20,041 INFO L241 Difference]: Finished difference. Result has 49 places, 105 transitions, 298 flow [2021-06-13 08:32:20,043 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=105} [2021-06-13 08:32:20,044 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -16 predicate places. [2021-06-13 08:32:20,044 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 105 transitions, 298 flow [2021-06-13 08:32:20,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,044 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:32:20,045 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2100292865, now seen corresponding path program 1 times [2021-06-13 08:32:20,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928972047] [2021-06-13 08:32:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928972047] [2021-06-13 08:32:20,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928972047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690190588] [2021-06-13 08:32:20,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,119 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 105 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,246 INFO L129 PetriNetUnfolder]: 1232/1670 cut-off events. [2021-06-13 08:32:20,249 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-06-13 08:32:20,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 1670 events. 1232/1670 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7367 event pairs, 0 based on Foata normal form. 8/1678 useless extension candidates. Maximal degree in co-relation 1853. Up to 504 conditions per place. [2021-06-13 08:32:20,263 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 7 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2021-06-13 08:32:20,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 103 transitions, 308 flow [2021-06-13 08:32:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:20,270 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:20,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,275 INFO L185 Difference]: Start difference. First operand has 49 places, 105 transitions, 298 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 103 transitions, 308 flow [2021-06-13 08:32:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 103 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,280 INFO L241 Difference]: Finished difference. Result has 50 places, 103 transitions, 293 flow [2021-06-13 08:32:20,280 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=50, PETRI_TRANSITIONS=103} [2021-06-13 08:32:20,281 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -15 predicate places. [2021-06-13 08:32:20,281 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 103 transitions, 293 flow [2021-06-13 08:32:20,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,281 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:32:20,282 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,283 INFO L82 PathProgramCache]: Analyzing trace with hash -884101587, now seen corresponding path program 1 times [2021-06-13 08:32:20,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107677593] [2021-06-13 08:32:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107677593] [2021-06-13 08:32:20,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107677593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652968974] [2021-06-13 08:32:20,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,336 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 103 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,401 INFO L129 PetriNetUnfolder]: 503/752 cut-off events. [2021-06-13 08:32:20,401 INFO L130 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2021-06-13 08:32:20,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 752 events. 503/752 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3237 event pairs, 0 based on Foata normal form. 148/900 useless extension candidates. Maximal degree in co-relation 794. Up to 168 conditions per place. [2021-06-13 08:32:20,408 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 3 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2021-06-13 08:32:20,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 97 transitions, 283 flow [2021-06-13 08:32:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:20,410 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:20,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,414 INFO L185 Difference]: Start difference. First operand has 50 places, 103 transitions, 293 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 97 transitions, 283 flow [2021-06-13 08:32:20,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 97 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,419 INFO L241 Difference]: Finished difference. Result has 51 places, 97 transitions, 276 flow [2021-06-13 08:32:20,419 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=51, PETRI_TRANSITIONS=97} [2021-06-13 08:32:20,419 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -14 predicate places. [2021-06-13 08:32:20,419 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 97 transitions, 276 flow [2021-06-13 08:32:20,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,420 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 08:32:20,420 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1776876375, now seen corresponding path program 1 times [2021-06-13 08:32:20,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915031398] [2021-06-13 08:32:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915031398] [2021-06-13 08:32:20,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915031398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356052100] [2021-06-13 08:32:20,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,470 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 97 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,523 INFO L129 PetriNetUnfolder]: 418/646 cut-off events. [2021-06-13 08:32:20,524 INFO L130 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2021-06-13 08:32:20,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 646 events. 418/646 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2677 event pairs, 0 based on Foata normal form. 16/662 useless extension candidates. Maximal degree in co-relation 724. Up to 168 conditions per place. [2021-06-13 08:32:20,528 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 6 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2021-06-13 08:32:20,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 94 transitions, 281 flow [2021-06-13 08:32:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:20,530 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:20,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,536 INFO L185 Difference]: Start difference. First operand has 51 places, 97 transitions, 276 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 94 transitions, 281 flow [2021-06-13 08:32:20,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,541 INFO L241 Difference]: Finished difference. Result has 52 places, 94 transitions, 268 flow [2021-06-13 08:32:20,542 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=52, PETRI_TRANSITIONS=94} [2021-06-13 08:32:20,542 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -13 predicate places. [2021-06-13 08:32:20,543 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 94 transitions, 268 flow [2021-06-13 08:32:20,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,543 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 08:32:20,543 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,544 INFO L82 PathProgramCache]: Analyzing trace with hash -349743985, now seen corresponding path program 1 times [2021-06-13 08:32:20,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821997440] [2021-06-13 08:32:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821997440] [2021-06-13 08:32:20,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821997440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765597551] [2021-06-13 08:32:20,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,583 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 94 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,635 INFO L129 PetriNetUnfolder]: 414/641 cut-off events. [2021-06-13 08:32:20,636 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-06-13 08:32:20,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 641 events. 414/641 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2695 event pairs, 0 based on Foata normal form. 1/642 useless extension candidates. Maximal degree in co-relation 719. Up to 168 conditions per place. [2021-06-13 08:32:20,640 INFO L132 encePairwiseOnDemand]: 118/120 looper letters, 8 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2021-06-13 08:32:20,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 93 transitions, 283 flow [2021-06-13 08:32:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:20,641 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:20,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,644 INFO L185 Difference]: Start difference. First operand has 52 places, 94 transitions, 268 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 93 transitions, 283 flow [2021-06-13 08:32:20,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,647 INFO L241 Difference]: Finished difference. Result has 53 places, 93 transitions, 266 flow [2021-06-13 08:32:20,647 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=53, PETRI_TRANSITIONS=93} [2021-06-13 08:32:20,647 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -12 predicate places. [2021-06-13 08:32:20,647 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 93 transitions, 266 flow [2021-06-13 08:32:20,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 08:32:20,648 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -339867065, now seen corresponding path program 1 times [2021-06-13 08:32:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412044384] [2021-06-13 08:32:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412044384] [2021-06-13 08:32:20,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412044384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11325053] [2021-06-13 08:32:20,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,690 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 93 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,724 INFO L129 PetriNetUnfolder]: 98/198 cut-off events. [2021-06-13 08:32:20,724 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2021-06-13 08:32:20,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 198 events. 98/198 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 670 event pairs, 0 based on Foata normal form. 71/269 useless extension candidates. Maximal degree in co-relation 209. Up to 45 conditions per place. [2021-06-13 08:32:20,725 INFO L132 encePairwiseOnDemand]: 111/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2021-06-13 08:32:20,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 222 flow [2021-06-13 08:32:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2021-06-13 08:32:20,726 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-13 08:32:20,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2021-06-13 08:32:20,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,729 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,729 INFO L185 Difference]: Start difference. First operand has 53 places, 93 transitions, 266 flow. Second operand 3 states and 340 transitions. [2021-06-13 08:32:20,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 222 flow [2021-06-13 08:32:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,731 INFO L241 Difference]: Finished difference. Result has 54 places, 77 transitions, 219 flow [2021-06-13 08:32:20,731 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=54, PETRI_TRANSITIONS=77} [2021-06-13 08:32:20,731 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -11 predicate places. [2021-06-13 08:32:20,732 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 77 transitions, 219 flow [2021-06-13 08:32:20,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,732 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 08:32:20,732 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1117585341, now seen corresponding path program 1 times [2021-06-13 08:32:20,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215034850] [2021-06-13 08:32:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:20,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:20,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:20,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215034850] [2021-06-13 08:32:20,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215034850] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:20,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:20,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:20,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256002262] [2021-06-13 08:32:20,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:20,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:20,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:20,772 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:20,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 77 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:20,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:20,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:20,789 INFO L129 PetriNetUnfolder]: 15/67 cut-off events. [2021-06-13 08:32:20,789 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-06-13 08:32:20,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 67 events. 15/67 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 22/89 useless extension candidates. Maximal degree in co-relation 79. Up to 10 conditions per place. [2021-06-13 08:32:20,789 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 1 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2021-06-13 08:32:20,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 163 flow [2021-06-13 08:32:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:20,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2021-06-13 08:32:20,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9416666666666667 [2021-06-13 08:32:20,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2021-06-13 08:32:20,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2021-06-13 08:32:20,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:20,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2021-06-13 08:32:20,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,794 INFO L185 Difference]: Start difference. First operand has 54 places, 77 transitions, 219 flow. Second operand 3 states and 339 transitions. [2021-06-13 08:32:20,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 163 flow [2021-06-13 08:32:20,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:20,796 INFO L241 Difference]: Finished difference. Result has 55 places, 57 transitions, 160 flow [2021-06-13 08:32:20,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2021-06-13 08:32:20,797 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, -10 predicate places. [2021-06-13 08:32:20,797 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 160 flow [2021-06-13 08:32:20,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:20,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:20,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:20,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 08:32:20,798 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:20,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1274184091, now seen corresponding path program 1 times [2021-06-13 08:32:20,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:20,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80533679] [2021-06-13 08:32:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:20,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:20,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:20,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:20,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:20,943 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:32:20,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:32:20,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:32:20,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:32:21,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:32:21,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:32:21,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:32:21,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:32:21,101 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-13 08:32:21,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:32:21,152 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-13 08:32:21,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 08:32:21,209 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:21,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:21,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:21,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80533679] [2021-06-13 08:32:21,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80533679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:21,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:21,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:21,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940418842] [2021-06-13 08:32:21,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:21,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:21,257 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:21,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 160 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:21,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:21,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:21,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:21,821 INFO L129 PetriNetUnfolder]: 2948/5672 cut-off events. [2021-06-13 08:32:21,822 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 08:32:21,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 5672 events. 2948/5672 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 46928 event pairs, 769 based on Foata normal form. 1/5452 useless extension candidates. Maximal degree in co-relation 8764. Up to 1153 conditions per place. [2021-06-13 08:32:21,871 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 44 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2021-06-13 08:32:21,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 352 flow [2021-06-13 08:32:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:21,875 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:21,875 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:21,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:21,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:21,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:21,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:21,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:21,882 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:21,882 INFO L185 Difference]: Start difference. First operand has 55 places, 57 transitions, 160 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 352 flow [2021-06-13 08:32:21,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:21,884 INFO L241 Difference]: Finished difference. Result has 73 places, 65 transitions, 228 flow [2021-06-13 08:32:21,884 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=228, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2021-06-13 08:32:21,885 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2021-06-13 08:32:21,885 INFO L482 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 228 flow [2021-06-13 08:32:21,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:21,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:21,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:21,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 08:32:21,886 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1182637745, now seen corresponding path program 2 times [2021-06-13 08:32:21,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:21,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041180291] [2021-06-13 08:32:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:21,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:21,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:21,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:21,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:21,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:21,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:21,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:32:21,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:32:21,996 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:32:22,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:32:22,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:32:22,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:32:22,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:32:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:32:22,104 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:32:22,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:32:22,146 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:22,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:22,208 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:22,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:22,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:22,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041180291] [2021-06-13 08:32:22,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041180291] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:22,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:22,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:22,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061802011] [2021-06-13 08:32:22,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:22,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:22,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:22,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:22,257 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:22,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 228 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:22,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:22,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:22,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:23,259 INFO L129 PetriNetUnfolder]: 4243/8846 cut-off events. [2021-06-13 08:32:23,259 INFO L130 PetriNetUnfolder]: For 5164/5264 co-relation queries the response was YES. [2021-06-13 08:32:23,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17366 conditions, 8846 events. 4243/8846 cut-off events. For 5164/5264 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 82217 event pairs, 963 based on Foata normal form. 1/8546 useless extension candidates. Maximal degree in co-relation 17349. Up to 1560 conditions per place. [2021-06-13 08:32:23,344 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 62 selfloop transitions, 13 changer transitions 0/122 dead transitions. [2021-06-13 08:32:23,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 642 flow [2021-06-13 08:32:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:23,347 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:23,347 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:23,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:23,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:23,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:23,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:23,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:23,352 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:23,353 INFO L185 Difference]: Start difference. First operand has 73 places, 65 transitions, 228 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:23,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 642 flow [2021-06-13 08:32:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 633 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:23,357 INFO L241 Difference]: Finished difference. Result has 91 places, 76 transitions, 351 flow [2021-06-13 08:32:23,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=351, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2021-06-13 08:32:23,358 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2021-06-13 08:32:23,358 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 351 flow [2021-06-13 08:32:23,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:23,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:23,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:23,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 08:32:23,359 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash -846374837, now seen corresponding path program 3 times [2021-06-13 08:32:23,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:23,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603083470] [2021-06-13 08:32:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:23,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:23,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:23,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:23,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:23,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:23,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:23,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:32:23,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:32:23,421 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:32:23,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:32:23,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:32:23,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:32:23,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:32:23,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:32:23,488 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:32:23,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:32:23,525 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-13 08:32:23,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 08:32:23,581 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:23,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:23,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:23,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603083470] [2021-06-13 08:32:23,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603083470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:23,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:23,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:23,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448870200] [2021-06-13 08:32:23,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:23,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:23,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:23,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:23,629 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:23,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 351 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:23,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:23,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:23,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:25,179 INFO L129 PetriNetUnfolder]: 5815/12763 cut-off events. [2021-06-13 08:32:25,179 INFO L130 PetriNetUnfolder]: For 19276/19768 co-relation queries the response was YES. [2021-06-13 08:32:25,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30069 conditions, 12763 events. 5815/12763 cut-off events. For 19276/19768 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 131707 event pairs, 1190 based on Foata normal form. 1/12286 useless extension candidates. Maximal degree in co-relation 30043. Up to 2159 conditions per place. [2021-06-13 08:32:25,433 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 77 selfloop transitions, 23 changer transitions 0/147 dead transitions. [2021-06-13 08:32:25,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1039 flow [2021-06-13 08:32:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:25,436 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:25,436 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:25,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:25,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:25,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:25,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:25,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:25,442 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:25,442 INFO L185 Difference]: Start difference. First operand has 91 places, 76 transitions, 351 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:25,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1039 flow [2021-06-13 08:32:25,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1009 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:25,464 INFO L241 Difference]: Finished difference. Result has 109 places, 96 transitions, 616 flow [2021-06-13 08:32:25,464 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2021-06-13 08:32:25,465 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 44 predicate places. [2021-06-13 08:32:25,465 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 616 flow [2021-06-13 08:32:25,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:25,465 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:25,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:25,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 08:32:25,466 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:25,466 INFO L82 PathProgramCache]: Analyzing trace with hash 808623409, now seen corresponding path program 4 times [2021-06-13 08:32:25,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:25,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873430719] [2021-06-13 08:32:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:25,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:25,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:25,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:25,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:25,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:25,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:25,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:25,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:32:25,544 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:32:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:32:25,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-13 08:32:25,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-13 08:32:25,584 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:32:25,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:32:25,616 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:32:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:32:25,655 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:25,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:25,703 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:25,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:25,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:25,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873430719] [2021-06-13 08:32:25,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873430719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:25,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:25,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:25,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194262777] [2021-06-13 08:32:25,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:25,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:25,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:25,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:25,749 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:25,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 616 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:25,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:25,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:25,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:28,890 INFO L129 PetriNetUnfolder]: 11420/26411 cut-off events. [2021-06-13 08:32:28,890 INFO L130 PetriNetUnfolder]: For 49542/50511 co-relation queries the response was YES. [2021-06-13 08:32:29,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57174 conditions, 26411 events. 11420/26411 cut-off events. For 49542/50511 co-relation queries the response was YES. Maximal size of possible extension queue 2407. Compared 322142 event pairs, 1539 based on Foata normal form. 1/25438 useless extension candidates. Maximal degree in co-relation 57139. Up to 3778 conditions per place. [2021-06-13 08:32:29,213 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 130 selfloop transitions, 28 changer transitions 0/205 dead transitions. [2021-06-13 08:32:29,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 205 transitions, 1968 flow [2021-06-13 08:32:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:29,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:29,217 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:29,217 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:29,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:29,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:29,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:29,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,223 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,223 INFO L185 Difference]: Start difference. First operand has 109 places, 96 transitions, 616 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 205 transitions, 1968 flow [2021-06-13 08:32:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 205 transitions, 1931 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:29,283 INFO L241 Difference]: Finished difference. Result has 127 places, 119 transitions, 982 flow [2021-06-13 08:32:29,283 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=982, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2021-06-13 08:32:29,284 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 62 predicate places. [2021-06-13 08:32:29,284 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 982 flow [2021-06-13 08:32:29,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,284 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:29,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:29,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 08:32:29,285 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1449997115, now seen corresponding path program 1 times [2021-06-13 08:32:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:29,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972656305] [2021-06-13 08:32:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:29,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:29,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:32:29,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:29,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:29,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972656305] [2021-06-13 08:32:29,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972656305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:29,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:29,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:32:29,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088505484] [2021-06-13 08:32:29,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:32:29,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:29,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:32:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:32:29,307 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 120 [2021-06-13 08:32:29,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 982 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:29,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 120 [2021-06-13 08:32:29,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:29,618 INFO L129 PetriNetUnfolder]: 0/1586 cut-off events. [2021-06-13 08:32:29,618 INFO L130 PetriNetUnfolder]: For 3161/3272 co-relation queries the response was YES. [2021-06-13 08:32:29,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3468 conditions, 1586 events. 0/1586 cut-off events. For 3161/3272 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19979 event pairs, 0 based on Foata normal form. 329/1749 useless extension candidates. Maximal degree in co-relation 0. Up to 128 conditions per place. [2021-06-13 08:32:29,621 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 1 selfloop transitions, 1 changer transitions 4/99 dead transitions. [2021-06-13 08:32:29,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 99 transitions, 926 flow [2021-06-13 08:32:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:32:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:32:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2021-06-13 08:32:29,623 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-06-13 08:32:29,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2021-06-13 08:32:29,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2021-06-13 08:32:29,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:29,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2021-06-13 08:32:29,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,625 INFO L185 Difference]: Start difference. First operand has 127 places, 119 transitions, 982 flow. Second operand 3 states and 337 transitions. [2021-06-13 08:32:29,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 99 transitions, 926 flow [2021-06-13 08:32:29,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 99 transitions, 881 flow, removed 20 selfloop flow, removed 1 redundant places. [2021-06-13 08:32:29,644 INFO L241 Difference]: Finished difference. Result has 128 places, 95 transitions, 847 flow [2021-06-13 08:32:29,644 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=847, PETRI_PLACES=128, PETRI_TRANSITIONS=95} [2021-06-13 08:32:29,644 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 63 predicate places. [2021-06-13 08:32:29,644 INFO L482 AbstractCegarLoop]: Abstraction has has 128 places, 95 transitions, 847 flow [2021-06-13 08:32:29,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,645 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:29,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:29,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 08:32:29,645 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1151164799, now seen corresponding path program 5 times [2021-06-13 08:32:29,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:29,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424985323] [2021-06-13 08:32:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:29,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:29,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:29,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:29,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:32:29,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:29,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-06-13 08:32:29,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-06-13 08:32:29,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-13 08:32:29,759 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-06-13 08:32:29,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:32:29,811 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-13 08:32:29,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-13 08:32:29,883 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:29,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:29,937 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:29,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:29,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:29,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424985323] [2021-06-13 08:32:29,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424985323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:29,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:29,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:29,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032228392] [2021-06-13 08:32:29,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:29,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:29,978 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:29,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 95 transitions, 847 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:29,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:29,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:29,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:31,614 INFO L129 PetriNetUnfolder]: 5179/14182 cut-off events. [2021-06-13 08:32:31,614 INFO L130 PetriNetUnfolder]: For 80303/82523 co-relation queries the response was YES. [2021-06-13 08:32:31,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56240 conditions, 14182 events. 5179/14182 cut-off events. For 80303/82523 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 170587 event pairs, 1396 based on Foata normal form. 2/13963 useless extension candidates. Maximal degree in co-relation 56196. Up to 3760 conditions per place. [2021-06-13 08:32:31,828 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 116 selfloop transitions, 36 changer transitions 1/180 dead transitions. [2021-06-13 08:32:31,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 180 transitions, 2027 flow [2021-06-13 08:32:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:31,832 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:31,832 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:31,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:31,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:31,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:31,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:31,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:31,838 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:31,838 INFO L185 Difference]: Start difference. First operand has 128 places, 95 transitions, 847 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:31,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 180 transitions, 2027 flow [2021-06-13 08:32:32,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 180 transitions, 1962 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-06-13 08:32:32,022 INFO L241 Difference]: Finished difference. Result has 138 places, 109 transitions, 1146 flow [2021-06-13 08:32:32,022 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=138, PETRI_TRANSITIONS=109} [2021-06-13 08:32:32,022 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 73 predicate places. [2021-06-13 08:32:32,022 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 109 transitions, 1146 flow [2021-06-13 08:32:32,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:32,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:32,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:32,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 08:32:32,023 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1541445133, now seen corresponding path program 6 times [2021-06-13 08:32:32,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:32,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506861559] [2021-06-13 08:32:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:32,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:32,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:32,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:32,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:32,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:32,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:32,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:32:32,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:32:32,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:32:32,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:32:32,131 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:32:32,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:32:32,165 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:32:32,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:32:32,197 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-13 08:32:32,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:32:32,240 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-13 08:32:32,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 08:32:32,291 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:32,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:32,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:32,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506861559] [2021-06-13 08:32:32,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506861559] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:32,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:32,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:32,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142556838] [2021-06-13 08:32:32,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:32,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:32,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:32,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:32,339 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:32,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 109 transitions, 1146 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:32,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:32,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:32,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:35,856 INFO L129 PetriNetUnfolder]: 6358/20620 cut-off events. [2021-06-13 08:32:35,857 INFO L130 PetriNetUnfolder]: For 165098/167750 co-relation queries the response was YES. [2021-06-13 08:32:35,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86543 conditions, 20620 events. 6358/20620 cut-off events. For 165098/167750 co-relation queries the response was YES. Maximal size of possible extension queue 2220. Compared 286936 event pairs, 2008 based on Foata normal form. 3/20044 useless extension candidates. Maximal degree in co-relation 86494. Up to 4508 conditions per place. [2021-06-13 08:32:36,060 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 197 selfloop transitions, 58 changer transitions 1/283 dead transitions. [2021-06-13 08:32:36,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 283 transitions, 4044 flow [2021-06-13 08:32:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:36,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:36,063 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:36,063 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:36,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:36,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:36,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:36,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:36,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:36,069 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:36,069 INFO L185 Difference]: Start difference. First operand has 138 places, 109 transitions, 1146 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:36,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 283 transitions, 4044 flow [2021-06-13 08:32:36,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 283 transitions, 3816 flow, removed 78 selfloop flow, removed 2 redundant places. [2021-06-13 08:32:36,405 INFO L241 Difference]: Finished difference. Result has 154 places, 159 transitions, 2044 flow [2021-06-13 08:32:36,406 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2044, PETRI_PLACES=154, PETRI_TRANSITIONS=159} [2021-06-13 08:32:36,406 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 89 predicate places. [2021-06-13 08:32:36,406 INFO L482 AbstractCegarLoop]: Abstraction has has 154 places, 159 transitions, 2044 flow [2021-06-13 08:32:36,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:36,406 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:36,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:36,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 08:32:36,407 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1760089831, now seen corresponding path program 7 times [2021-06-13 08:32:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:36,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697229415] [2021-06-13 08:32:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:36,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:36,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:36,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:36,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:36,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:36,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:36,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:36,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:32:36,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:32:36,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:32:36,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:32:36,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:32:36,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:32:36,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:32:36,536 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-13 08:32:36,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 08:32:36,594 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:36,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:36,639 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:36,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:36,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:36,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697229415] [2021-06-13 08:32:36,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697229415] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:36,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:36,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:36,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251713239] [2021-06-13 08:32:36,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:36,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:36,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:36,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:36,679 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:36,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 159 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:36,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:36,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:36,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:42,320 INFO L129 PetriNetUnfolder]: 8023/29419 cut-off events. [2021-06-13 08:32:42,320 INFO L130 PetriNetUnfolder]: For 304458/310204 co-relation queries the response was YES. [2021-06-13 08:32:42,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131315 conditions, 29419 events. 8023/29419 cut-off events. For 304458/310204 co-relation queries the response was YES. Maximal size of possible extension queue 3358. Compared 452405 event pairs, 2612 based on Foata normal form. 2/28511 useless extension candidates. Maximal degree in co-relation 131258. Up to 6478 conditions per place. [2021-06-13 08:32:42,891 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 282 selfloop transitions, 76 changer transitions 1/386 dead transitions. [2021-06-13 08:32:42,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 386 transitions, 6236 flow [2021-06-13 08:32:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:42,895 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:42,895 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:42,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:42,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:42,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:42,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:42,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:42,901 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:42,901 INFO L185 Difference]: Start difference. First operand has 154 places, 159 transitions, 2044 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:42,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 386 transitions, 6236 flow [2021-06-13 08:32:43,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 386 transitions, 6140 flow, removed 40 selfloop flow, removed 2 redundant places. [2021-06-13 08:32:43,522 INFO L241 Difference]: Finished difference. Result has 170 places, 209 transitions, 3163 flow [2021-06-13 08:32:43,522 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3163, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2021-06-13 08:32:43,522 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 105 predicate places. [2021-06-13 08:32:43,522 INFO L482 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 3163 flow [2021-06-13 08:32:43,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:43,523 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:43,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:43,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 08:32:43,523 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1703086725, now seen corresponding path program 8 times [2021-06-13 08:32:43,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:43,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722723273] [2021-06-13 08:32:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:43,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:43,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:43,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:43,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:43,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:43,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:43,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:43,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:32:43,639 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:32:43,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:32:43,658 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-13 08:32:43,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-13 08:32:43,682 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-13 08:32:43,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-13 08:32:43,721 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-13 08:32:43,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 08:32:43,782 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:43,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:43,825 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:43,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:43,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:43,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722723273] [2021-06-13 08:32:43,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722723273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:43,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:43,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:43,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262797179] [2021-06-13 08:32:43,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:43,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:43,865 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:43,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 3163 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:43,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:43,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:43,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:32:50,407 INFO L129 PetriNetUnfolder]: 8661/32723 cut-off events. [2021-06-13 08:32:50,407 INFO L130 PetriNetUnfolder]: For 431117/436511 co-relation queries the response was YES. [2021-06-13 08:32:50,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159951 conditions, 32723 events. 8661/32723 cut-off events. For 431117/436511 co-relation queries the response was YES. Maximal size of possible extension queue 3932. Compared 516581 event pairs, 2837 based on Foata normal form. 3/31855 useless extension candidates. Maximal degree in co-relation 159886. Up to 6975 conditions per place. [2021-06-13 08:32:50,908 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 236 selfloop transitions, 104 changer transitions 1/368 dead transitions. [2021-06-13 08:32:50,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 368 transitions, 6407 flow [2021-06-13 08:32:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:32:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:32:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:32:50,911 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:32:50,911 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:32:50,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:32:50,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:32:50,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:32:50,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:50,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:50,916 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:50,916 INFO L185 Difference]: Start difference. First operand has 170 places, 209 transitions, 3163 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:32:50,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 368 transitions, 6407 flow [2021-06-13 08:32:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 368 transitions, 6150 flow, removed 110 selfloop flow, removed 2 redundant places. [2021-06-13 08:32:52,480 INFO L241 Difference]: Finished difference. Result has 186 places, 249 transitions, 4186 flow [2021-06-13 08:32:52,480 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4186, PETRI_PLACES=186, PETRI_TRANSITIONS=249} [2021-06-13 08:32:52,480 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 121 predicate places. [2021-06-13 08:32:52,480 INFO L482 AbstractCegarLoop]: Abstraction has has 186 places, 249 transitions, 4186 flow [2021-06-13 08:32:52,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:52,481 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:32:52,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:32:52,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 08:32:52,481 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:32:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:32:52,482 INFO L82 PathProgramCache]: Analyzing trace with hash -472044735, now seen corresponding path program 9 times [2021-06-13 08:32:52,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:32:52,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455367132] [2021-06-13 08:32:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:32:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:32:52,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:52,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:32:52,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:52,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:32:52,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:32:52,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:32:52,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:32:52,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:32:52,542 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:32:52,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:32:52,558 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-13 08:32:52,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-13 08:32:52,633 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-13 08:32:52,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-13 08:32:52,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:32:52,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:32:52,707 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:32:52,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:32:52,741 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:32:52,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:32:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:32:52,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:32:52,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455367132] [2021-06-13 08:32:52,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455367132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:32:52,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:32:52,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:32:52,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551188050] [2021-06-13 08:32:52,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:32:52,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:32:52,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:32:52,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:32:52,778 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:32:52,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 249 transitions, 4186 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:32:52,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:32:52,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:32:52,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:33:00,943 INFO L129 PetriNetUnfolder]: 9196/36880 cut-off events. [2021-06-13 08:33:00,943 INFO L130 PetriNetUnfolder]: For 577875/583797 co-relation queries the response was YES. [2021-06-13 08:33:01,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188714 conditions, 36880 events. 9196/36880 cut-off events. For 577875/583797 co-relation queries the response was YES. Maximal size of possible extension queue 4519. Compared 604264 event pairs, 3173 based on Foata normal form. 7/35962 useless extension candidates. Maximal degree in co-relation 188641. Up to 8111 conditions per place. [2021-06-13 08:33:01,657 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 299 selfloop transitions, 127 changer transitions 1/454 dead transitions. [2021-06-13 08:33:01,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 454 transitions, 8916 flow [2021-06-13 08:33:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:33:01,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:33:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:33:01,659 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:33:01,659 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:33:01,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:33:01,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:33:01,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:33:01,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:01,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:01,664 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:01,664 INFO L185 Difference]: Start difference. First operand has 186 places, 249 transitions, 4186 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:33:01,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 454 transitions, 8916 flow [2021-06-13 08:33:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 454 transitions, 8512 flow, removed 156 selfloop flow, removed 2 redundant places. [2021-06-13 08:33:03,551 INFO L241 Difference]: Finished difference. Result has 202 places, 310 transitions, 5760 flow [2021-06-13 08:33:03,552 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5760, PETRI_PLACES=202, PETRI_TRANSITIONS=310} [2021-06-13 08:33:03,552 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 137 predicate places. [2021-06-13 08:33:03,552 INFO L482 AbstractCegarLoop]: Abstraction has has 202 places, 310 transitions, 5760 flow [2021-06-13 08:33:03,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:03,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:33:03,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:33:03,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-13 08:33:03,553 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:33:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:33:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash -802819203, now seen corresponding path program 10 times [2021-06-13 08:33:03,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:33:03,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633675319] [2021-06-13 08:33:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:33:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:33:03,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:03,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:33:03,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:03,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:33:03,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:03,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:33:03,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:03,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:33:03,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-13 08:33:03,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-13 08:33:03,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-06-13 08:33:03,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-13 08:33:03,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-06-13 08:33:03,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:33:03,702 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-13 08:33:03,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-13 08:33:03,764 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:33:03,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:33:03,801 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:33:03,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:33:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:33:03,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:33:03,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633675319] [2021-06-13 08:33:03,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633675319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:33:03,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:33:03,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:33:03,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560831079] [2021-06-13 08:33:03,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:33:03,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:33:03,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:33:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:33:03,833 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:33:03,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 310 transitions, 5760 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:03,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:33:03,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:33:03,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:33:16,007 INFO L129 PetriNetUnfolder]: 11763/47574 cut-off events. [2021-06-13 08:33:16,008 INFO L130 PetriNetUnfolder]: For 941704/952999 co-relation queries the response was YES. [2021-06-13 08:33:16,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267913 conditions, 47574 events. 11763/47574 cut-off events. For 941704/952999 co-relation queries the response was YES. Maximal size of possible extension queue 6068. Compared 807980 event pairs, 7310 based on Foata normal form. 10/46565 useless extension candidates. Maximal degree in co-relation 267832. Up to 10891 conditions per place. [2021-06-13 08:33:17,042 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 343 selfloop transitions, 173 changer transitions 2/545 dead transitions. [2021-06-13 08:33:17,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 545 transitions, 11302 flow [2021-06-13 08:33:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:33:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:33:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:33:17,044 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:33:17,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:33:17,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:33:17,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:33:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:33:17,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:17,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:17,047 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:17,047 INFO L185 Difference]: Start difference. First operand has 202 places, 310 transitions, 5760 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:33:17,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 545 transitions, 11302 flow [2021-06-13 08:33:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 545 transitions, 10794 flow, removed 168 selfloop flow, removed 2 redundant places. [2021-06-13 08:33:20,884 INFO L241 Difference]: Finished difference. Result has 218 places, 358 transitions, 7286 flow [2021-06-13 08:33:20,884 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=5570, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7286, PETRI_PLACES=218, PETRI_TRANSITIONS=358} [2021-06-13 08:33:20,884 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 153 predicate places. [2021-06-13 08:33:20,884 INFO L482 AbstractCegarLoop]: Abstraction has has 218 places, 358 transitions, 7286 flow [2021-06-13 08:33:20,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:20,884 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:33:20,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:33:20,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-13 08:33:20,885 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:33:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:33:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash 634177005, now seen corresponding path program 11 times [2021-06-13 08:33:20,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:33:20,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049170468] [2021-06-13 08:33:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:33:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:33:20,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:20,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:33:20,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:20,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:33:20,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-13 08:33:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:33:20,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:33:20,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:33:20,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-13 08:33:20,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 08:33:20,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:33:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:33:20,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:33:20,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:33:21,014 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-13 08:33:21,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-13 08:33:21,046 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:33:21,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:33:21,081 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:33:21,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:33:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:33:21,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:33:21,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049170468] [2021-06-13 08:33:21,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049170468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:33:21,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:33:21,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:33:21,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472221040] [2021-06-13 08:33:21,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:33:21,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:33:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:33:21,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:33:21,119 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:33:21,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 358 transitions, 7286 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:21,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:33:21,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:33:21,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:33:39,896 INFO L129 PetriNetUnfolder]: 13420/57646 cut-off events. [2021-06-13 08:33:39,897 INFO L130 PetriNetUnfolder]: For 1240532/1269887 co-relation queries the response was YES. [2021-06-13 08:33:40,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327151 conditions, 57646 events. 13420/57646 cut-off events. For 1240532/1269887 co-relation queries the response was YES. Maximal size of possible extension queue 7110. Compared 1026633 event pairs, 5479 based on Foata normal form. 26/55992 useless extension candidates. Maximal degree in co-relation 327062. Up to 12016 conditions per place. [2021-06-13 08:33:41,236 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 255 selfloop transitions, 226 changer transitions 1/509 dead transitions. [2021-06-13 08:33:41,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 509 transitions, 11498 flow [2021-06-13 08:33:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:33:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:33:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:33:41,238 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:33:41,238 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:33:41,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:33:41,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:33:41,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:33:41,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:41,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:41,242 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:41,242 INFO L185 Difference]: Start difference. First operand has 218 places, 358 transitions, 7286 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:33:41,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 509 transitions, 11498 flow [2021-06-13 08:33:49,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 509 transitions, 11207 flow, removed 109 selfloop flow, removed 3 redundant places. [2021-06-13 08:33:49,247 INFO L241 Difference]: Finished difference. Result has 233 places, 424 transitions, 9748 flow [2021-06-13 08:33:49,247 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=7147, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9748, PETRI_PLACES=233, PETRI_TRANSITIONS=424} [2021-06-13 08:33:49,248 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 168 predicate places. [2021-06-13 08:33:49,248 INFO L482 AbstractCegarLoop]: Abstraction has has 233 places, 424 transitions, 9748 flow [2021-06-13 08:33:49,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:49,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:33:49,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:33:49,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-13 08:33:49,248 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:33:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:33:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash 397988083, now seen corresponding path program 12 times [2021-06-13 08:33:49,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:33:49,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533336447] [2021-06-13 08:33:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:33:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:33:49,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:49,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:33:49,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:49,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:33:49,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:49,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:33:49,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:33:49,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:33:49,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-13 08:33:49,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-13 08:33:49,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-06-13 08:33:49,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-06-13 08:33:49,369 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.1 percent of original size [2021-06-13 08:33:49,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:33:49,452 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-13 08:33:49,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-13 08:33:49,498 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:33:49,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:33:49,540 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:33:49,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:33:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:33:49,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:33:49,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533336447] [2021-06-13 08:33:49,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533336447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:33:49,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:33:49,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:33:49,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542107905] [2021-06-13 08:33:49,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:33:49,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:33:49,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:33:49,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:33:49,584 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:33:49,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 424 transitions, 9748 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:33:49,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:33:49,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:33:49,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:34:00,178 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-13 08:34:13,849 INFO L129 PetriNetUnfolder]: 14404/62727 cut-off events. [2021-06-13 08:34:13,849 INFO L130 PetriNetUnfolder]: For 1544652/1576650 co-relation queries the response was YES. [2021-06-13 08:34:14,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 378073 conditions, 62727 events. 14404/62727 cut-off events. For 1544652/1576650 co-relation queries the response was YES. Maximal size of possible extension queue 8145. Compared 1129334 event pairs, 6298 based on Foata normal form. 13/61125 useless extension candidates. Maximal degree in co-relation 377977. Up to 13850 conditions per place. [2021-06-13 08:34:15,119 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 362 selfloop transitions, 264 changer transitions 2/655 dead transitions. [2021-06-13 08:34:15,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 655 transitions, 15622 flow [2021-06-13 08:34:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:34:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:34:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:34:15,133 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:34:15,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:34:15,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:34:15,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:34:15,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:34:15,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:15,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:15,136 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:15,136 INFO L185 Difference]: Start difference. First operand has 233 places, 424 transitions, 9748 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:34:15,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 655 transitions, 15622 flow [2021-06-13 08:34:23,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 655 transitions, 15033 flow, removed 227 selfloop flow, removed 2 redundant places. [2021-06-13 08:34:23,433 INFO L241 Difference]: Finished difference. Result has 249 places, 474 transitions, 11443 flow [2021-06-13 08:34:23,434 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=9481, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11443, PETRI_PLACES=249, PETRI_TRANSITIONS=474} [2021-06-13 08:34:23,434 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 184 predicate places. [2021-06-13 08:34:23,434 INFO L482 AbstractCegarLoop]: Abstraction has has 249 places, 474 transitions, 11443 flow [2021-06-13 08:34:23,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:23,434 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:34:23,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:34:23,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-13 08:34:23,434 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:34:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:34:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1442361847, now seen corresponding path program 13 times [2021-06-13 08:34:23,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:34:23,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190864799] [2021-06-13 08:34:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:34:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:34:23,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:34:23,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:34:23,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:34:23,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:34:23,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:34:23,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:34:23,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:34:23,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:34:23,510 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:34:23,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:34:23,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:34:23,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:34:23,549 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-13 08:34:23,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 08:34:23,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-13 08:34:23,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:34:23,612 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:34:23,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:34:23,655 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:34:23,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:34:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:34:23,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:34:23,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190864799] [2021-06-13 08:34:23,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190864799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:34:23,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:34:23,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:34:23,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234699158] [2021-06-13 08:34:23,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:34:23,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:34:23,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:34:23,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:34:23,692 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:34:23,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 474 transitions, 11443 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:23,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:34:23,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:34:23,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:34:55,550 INFO L129 PetriNetUnfolder]: 15296/73133 cut-off events. [2021-06-13 08:34:55,550 INFO L130 PetriNetUnfolder]: For 1906722/1944998 co-relation queries the response was YES. [2021-06-13 08:34:56,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440669 conditions, 73133 events. 15296/73133 cut-off events. For 1906722/1944998 co-relation queries the response was YES. Maximal size of possible extension queue 9400. Compared 1378711 event pairs, 6551 based on Foata normal form. 30/70709 useless extension candidates. Maximal degree in co-relation 440565. Up to 15902 conditions per place. [2021-06-13 08:34:57,328 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 401 selfloop transitions, 316 changer transitions 1/745 dead transitions. [2021-06-13 08:34:57,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 745 transitions, 18829 flow [2021-06-13 08:34:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:34:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:34:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:34:57,330 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:34:57,330 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:34:57,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:34:57,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:34:57,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:34:57,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:57,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:57,333 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:34:57,333 INFO L185 Difference]: Start difference. First operand has 249 places, 474 transitions, 11443 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:34:57,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 745 transitions, 18829 flow [2021-06-13 08:35:13,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 745 transitions, 18350 flow, removed 147 selfloop flow, removed 3 redundant places. [2021-06-13 08:35:13,241 INFO L241 Difference]: Finished difference. Result has 264 places, 578 transitions, 14724 flow [2021-06-13 08:35:13,241 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=11112, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14724, PETRI_PLACES=264, PETRI_TRANSITIONS=578} [2021-06-13 08:35:13,241 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 199 predicate places. [2021-06-13 08:35:13,241 INFO L482 AbstractCegarLoop]: Abstraction has has 264 places, 578 transitions, 14724 flow [2021-06-13 08:35:13,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:35:13,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:35:13,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:35:13,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-13 08:35:13,242 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:35:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:35:13,242 INFO L82 PathProgramCache]: Analyzing trace with hash -733579493, now seen corresponding path program 14 times [2021-06-13 08:35:13,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:35:13,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485044268] [2021-06-13 08:35:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:35:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:35:13,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:35:13,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:35:13,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:35:13,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:35:13,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:35:13,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:35:13,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:35:13,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:35:13,296 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-13 08:35:13,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 08:35:13,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-13 08:35:13,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-13 08:35:13,329 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-13 08:35:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-13 08:35:13,353 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-13 08:35:13,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-13 08:35:13,384 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:35:13,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:35:13,430 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:35:13,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:35:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:35:13,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:35:13,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485044268] [2021-06-13 08:35:13,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485044268] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:35:13,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:35:13,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:35:13,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949483370] [2021-06-13 08:35:13,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:35:13,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:35:13,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:35:13,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:35:13,471 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:35:13,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 578 transitions, 14724 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:35:13,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:35:13,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:35:13,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:35:56,019 INFO L129 PetriNetUnfolder]: 16383/84756 cut-off events. [2021-06-13 08:35:56,019 INFO L130 PetriNetUnfolder]: For 2406177/2448521 co-relation queries the response was YES. [2021-06-13 08:35:57,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 517292 conditions, 84756 events. 16383/84756 cut-off events. For 2406177/2448521 co-relation queries the response was YES. Maximal size of possible extension queue 10877. Compared 1659164 event pairs, 7227 based on Foata normal form. 46/81642 useless extension candidates. Maximal degree in co-relation 517181. Up to 16142 conditions per place. [2021-06-13 08:35:58,586 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 465 selfloop transitions, 395 changer transitions 1/888 dead transitions. [2021-06-13 08:35:58,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 888 transitions, 24098 flow [2021-06-13 08:35:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:35:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:35:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:35:58,588 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:35:58,588 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:35:58,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:35:58,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:35:58,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:35:58,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:35:58,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:35:58,592 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:35:58,592 INFO L185 Difference]: Start difference. First operand has 264 places, 578 transitions, 14724 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:35:58,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 888 transitions, 24098 flow [2021-06-13 08:36:19,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 888 transitions, 23432 flow, removed 241 selfloop flow, removed 2 redundant places. [2021-06-13 08:36:19,675 INFO L241 Difference]: Finished difference. Result has 280 places, 729 transitions, 19732 flow [2021-06-13 08:36:19,675 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=14288, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19732, PETRI_PLACES=280, PETRI_TRANSITIONS=729} [2021-06-13 08:36:19,675 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 215 predicate places. [2021-06-13 08:36:19,675 INFO L482 AbstractCegarLoop]: Abstraction has has 280 places, 729 transitions, 19732 flow [2021-06-13 08:36:19,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:36:19,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:36:19,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:36:19,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-13 08:36:19,676 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:36:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:36:19,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2111407913, now seen corresponding path program 15 times [2021-06-13 08:36:19,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:36:19,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459456381] [2021-06-13 08:36:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:36:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:36:19,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:36:19,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:36:19,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:36:19,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:36:19,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:36:19,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:36:19,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:36:19,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:36:19,733 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-13 08:36:19,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-13 08:36:19,749 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-13 08:36:19,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-13 08:36:19,772 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-13 08:36:19,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-13 08:36:19,820 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-13 08:36:19,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-13 08:36:19,877 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:36:19,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:36:19,918 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:36:19,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:36:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:36:19,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:36:19,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459456381] [2021-06-13 08:36:19,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459456381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:36:19,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:36:19,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:36:19,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885651333] [2021-06-13 08:36:19,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:36:19,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:36:19,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:36:19,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:36:19,957 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:36:19,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 729 transitions, 19732 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:36:19,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:36:19,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:36:19,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:37:07,187 INFO L129 PetriNetUnfolder]: 16558/84302 cut-off events. [2021-06-13 08:37:07,187 INFO L130 PetriNetUnfolder]: For 2837182/2879142 co-relation queries the response was YES. [2021-06-13 08:37:09,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 557344 conditions, 84302 events. 16558/84302 cut-off events. For 2837182/2879142 co-relation queries the response was YES. Maximal size of possible extension queue 11242. Compared 1638927 event pairs, 8779 based on Foata normal form. 35/82128 useless extension candidates. Maximal degree in co-relation 557225. Up to 15720 conditions per place. [2021-06-13 08:37:09,686 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 487 selfloop transitions, 478 changer transitions 1/993 dead transitions. [2021-06-13 08:37:09,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 993 transitions, 28114 flow [2021-06-13 08:37:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:37:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:37:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:37:09,688 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:37:09,688 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:37:09,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:37:09,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:37:09,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:37:09,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:37:09,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:37:09,690 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:37:09,690 INFO L185 Difference]: Start difference. First operand has 280 places, 729 transitions, 19732 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:37:09,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 993 transitions, 28114 flow [2021-06-13 08:37:32,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 993 transitions, 27490 flow, removed 220 selfloop flow, removed 2 redundant places. [2021-06-13 08:37:32,041 INFO L241 Difference]: Finished difference. Result has 296 places, 802 transitions, 22956 flow [2021-06-13 08:37:32,042 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=19222, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22956, PETRI_PLACES=296, PETRI_TRANSITIONS=802} [2021-06-13 08:37:32,042 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 231 predicate places. [2021-06-13 08:37:32,042 INFO L482 AbstractCegarLoop]: Abstraction has has 296 places, 802 transitions, 22956 flow [2021-06-13 08:37:32,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:37:32,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:37:32,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:37:32,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-13 08:37:32,043 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:37:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:37:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash -231583753, now seen corresponding path program 16 times [2021-06-13 08:37:32,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:37:32,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403470862] [2021-06-13 08:37:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:37:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:37:32,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:37:32,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:37:32,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:37:32,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:37:32,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-13 08:37:32,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:37:32,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:37:32,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:37:32,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-13 08:37:32,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-13 08:37:32,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:37:32,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:37:32,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-13 08:37:32,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 08:37:32,167 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-13 08:37:32,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:37:32,213 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-13 08:37:32,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 08:37:32,258 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:37:32,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:37:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:37:32,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:37:32,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403470862] [2021-06-13 08:37:32,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403470862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:37:32,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:37:32,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:37:32,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079571473] [2021-06-13 08:37:32,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:37:32,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:37:32,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:37:32,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:37:32,298 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:37:32,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 802 transitions, 22956 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:37:32,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:37:32,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:37:32,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:38:25,161 INFO L129 PetriNetUnfolder]: 16650/89350 cut-off events. [2021-06-13 08:38:25,162 INFO L130 PetriNetUnfolder]: For 3294931/3343918 co-relation queries the response was YES. [2021-06-13 08:38:27,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 602241 conditions, 89350 events. 16650/89350 cut-off events. For 3294931/3343918 co-relation queries the response was YES. Maximal size of possible extension queue 11775. Compared 1775860 event pairs, 8865 based on Foata normal form. 49/86541 useless extension candidates. Maximal degree in co-relation 602114. Up to 15912 conditions per place. [2021-06-13 08:38:27,772 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 586 selfloop transitions, 462 changer transitions 1/1076 dead transitions. [2021-06-13 08:38:27,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1076 transitions, 32668 flow [2021-06-13 08:38:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:38:27,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:38:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:38:27,774 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:38:27,774 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:38:27,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:38:27,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:38:27,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:38:27,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:38:27,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:38:27,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:38:27,777 INFO L185 Difference]: Start difference. First operand has 296 places, 802 transitions, 22956 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:38:27,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1076 transitions, 32668 flow [2021-06-13 08:38:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1076 transitions, 31994 flow, removed 245 selfloop flow, removed 2 redundant places. [2021-06-13 08:38:57,788 INFO L241 Difference]: Finished difference. Result has 312 places, 853 transitions, 25564 flow [2021-06-13 08:38:57,788 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=22462, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25564, PETRI_PLACES=312, PETRI_TRANSITIONS=853} [2021-06-13 08:38:57,788 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 247 predicate places. [2021-06-13 08:38:57,788 INFO L482 AbstractCegarLoop]: Abstraction has has 312 places, 853 transitions, 25564 flow [2021-06-13 08:38:57,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:38:57,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:38:57,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:38:57,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-13 08:38:57,789 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:38:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:38:57,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1675289973, now seen corresponding path program 17 times [2021-06-13 08:38:57,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:38:57,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317556129] [2021-06-13 08:38:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:38:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:38:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:38:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:38:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:38:57,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:38:57,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:38:57,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:38:57,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:38:57,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:38:57,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-13 08:38:57,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-13 08:38:57,867 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:38:57,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:38:57,906 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-13 08:38:57,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-13 08:38:57,952 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-13 08:38:57,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 08:38:58,008 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:38:58,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:38:58,048 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:38:58,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:38:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:38:58,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:38:58,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317556129] [2021-06-13 08:38:58,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317556129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:38:58,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:38:58,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:38:58,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255777346] [2021-06-13 08:38:58,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:38:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:38:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:38:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:38:58,086 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:38:58,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 853 transitions, 25564 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:38:58,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:38:58,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:38:58,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:39:58,273 INFO L129 PetriNetUnfolder]: 16614/92164 cut-off events. [2021-06-13 08:39:58,273 INFO L130 PetriNetUnfolder]: For 3683142/3725733 co-relation queries the response was YES. [2021-06-13 08:40:00,633 INFO L84 FinitePrefix]: Finished finitePrefix Result has 640924 conditions, 92164 events. 16614/92164 cut-off events. For 3683142/3725733 co-relation queries the response was YES. Maximal size of possible extension queue 12478. Compared 1850068 event pairs, 10440 based on Foata normal form. 46/89432 useless extension candidates. Maximal degree in co-relation 640789. Up to 16053 conditions per place. [2021-06-13 08:40:01,297 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 743 selfloop transitions, 499 changer transitions 1/1270 dead transitions. [2021-06-13 08:40:01,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 1270 transitions, 39282 flow [2021-06-13 08:40:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:40:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:40:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:40:01,299 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:40:01,299 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:40:01,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:40:01,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:40:01,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:40:01,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:40:01,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:40:01,302 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:40:01,302 INFO L185 Difference]: Start difference. First operand has 312 places, 853 transitions, 25564 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:40:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 1270 transitions, 39282 flow [2021-06-13 08:40:43,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1270 transitions, 38478 flow, removed 310 selfloop flow, removed 2 redundant places. [2021-06-13 08:40:43,695 INFO L241 Difference]: Finished difference. Result has 327 places, 929 transitions, 28578 flow [2021-06-13 08:40:43,695 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=25004, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=28578, PETRI_PLACES=327, PETRI_TRANSITIONS=929} [2021-06-13 08:40:43,695 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 262 predicate places. [2021-06-13 08:40:43,695 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 929 transitions, 28578 flow [2021-06-13 08:40:43,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:40:43,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:40:43,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:40:43,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-13 08:40:43,696 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:40:43,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:40:43,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1072929417, now seen corresponding path program 18 times [2021-06-13 08:40:43,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:40:43,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503888924] [2021-06-13 08:40:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:40:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:40:43,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:40:43,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:40:43,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:40:43,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:40:43,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-13 08:40:43,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:40:43,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-13 08:40:43,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-13 08:40:43,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-13 08:40:43,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-13 08:40:43,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:40:43,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:40:43,813 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-06-13 08:40:43,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 08:40:43,841 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-13 08:40:43,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-13 08:40:43,876 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:40:43,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:40:43,917 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:40:43,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:40:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:40:43,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:40:43,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503888924] [2021-06-13 08:40:43,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503888924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:40:43,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:40:43,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:40:43,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186641417] [2021-06-13 08:40:43,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:40:43,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:40:43,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:40:43,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:40:43,957 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:40:43,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 929 transitions, 28578 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:40:43,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:40:43,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:40:43,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:41:42,310 INFO L129 PetriNetUnfolder]: 16666/99730 cut-off events. [2021-06-13 08:41:42,311 INFO L130 PetriNetUnfolder]: For 4024713/4081069 co-relation queries the response was YES. [2021-06-13 08:41:45,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 678111 conditions, 99730 events. 16666/99730 cut-off events. For 4024713/4081069 co-relation queries the response was YES. Maximal size of possible extension queue 13014. Compared 2055928 event pairs, 8081 based on Foata normal form. 78/95788 useless extension candidates. Maximal degree in co-relation 677969. Up to 16338 conditions per place. [2021-06-13 08:41:45,774 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 702 selfloop transitions, 538 changer transitions 1/1268 dead transitions. [2021-06-13 08:41:45,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1268 transitions, 40980 flow [2021-06-13 08:41:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:41:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:41:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:41:45,775 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:41:45,775 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:41:45,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:41:45,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:41:45,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:41:45,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:41:45,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:41:45,778 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:41:45,778 INFO L185 Difference]: Start difference. First operand has 327 places, 929 transitions, 28578 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:41:45,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1268 transitions, 40980 flow [2021-06-13 08:42:27,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1268 transitions, 39600 flow, removed 302 selfloop flow, removed 3 redundant places. [2021-06-13 08:42:27,708 INFO L241 Difference]: Finished difference. Result has 341 places, 994 transitions, 30954 flow [2021-06-13 08:42:27,709 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=27588, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30954, PETRI_PLACES=341, PETRI_TRANSITIONS=994} [2021-06-13 08:42:27,709 INFO L335 CegarLoopForPetriNet]: 65 programPoint places, 276 predicate places. [2021-06-13 08:42:27,709 INFO L482 AbstractCegarLoop]: Abstraction has has 341 places, 994 transitions, 30954 flow [2021-06-13 08:42:27,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:42:27,709 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:42:27,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 08:42:27,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-13 08:42:27,709 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-13 08:42:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:42:27,710 INFO L82 PathProgramCache]: Analyzing trace with hash 663546915, now seen corresponding path program 19 times [2021-06-13 08:42:27,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:42:27,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348375919] [2021-06-13 08:42:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:42:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:42:27,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:42:27,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:42:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:42:27,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:42:27,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:42:27,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:42:27,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:42:27,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 08:42:27,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-06-13 08:42:27,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-13 08:42:27,785 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-13 08:42:27,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-13 08:42:27,824 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-13 08:42:27,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-13 08:42:27,872 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-13 08:42:27,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-13 08:42:27,915 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-13 08:42:27,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 08:42:27,947 INFO L142 QuantifierPusher]: treesize reduction 72, result has 47.4 percent of original size [2021-06-13 08:42:27,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-13 08:42:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:42:27,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:42:27,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348375919] [2021-06-13 08:42:27,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348375919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:42:27,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:42:27,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 08:42:27,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183002579] [2021-06-13 08:42:27,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 08:42:27,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:42:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 08:42:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-06-13 08:42:27,978 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 120 [2021-06-13 08:42:27,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 994 transitions, 30954 flow. Second operand has 11 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:42:27,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:42:27,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 120 [2021-06-13 08:42:27,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:43:30,856 INFO L129 PetriNetUnfolder]: 16652/97033 cut-off events. [2021-06-13 08:43:30,856 INFO L130 PetriNetUnfolder]: For 4203196/4260627 co-relation queries the response was YES. [2021-06-13 08:43:33,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692147 conditions, 97033 events. 16652/97033 cut-off events. For 4203196/4260627 co-relation queries the response was YES. Maximal size of possible extension queue 13066. Compared 1981611 event pairs, 8386 based on Foata normal form. 58/93929 useless extension candidates. Maximal degree in co-relation 691998. Up to 16444 conditions per place. [2021-06-13 08:43:34,261 INFO L132 encePairwiseOnDemand]: 110/120 looper letters, 895 selfloop transitions, 547 changer transitions 1/1470 dead transitions. [2021-06-13 08:43:34,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1470 transitions, 47738 flow [2021-06-13 08:43:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 08:43:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 08:43:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2021-06-13 08:43:34,262 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9492424242424242 [2021-06-13 08:43:34,262 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2021-06-13 08:43:34,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2021-06-13 08:43:34,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:43:34,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2021-06-13 08:43:34,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:43:34,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:43:34,265 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:43:34,265 INFO L185 Difference]: Start difference. First operand has 341 places, 994 transitions, 30954 flow. Second operand 11 states and 1253 transitions. [2021-06-13 08:43:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1470 transitions, 47738 flow Received shutdown request... [2021-06-13 08:43:51,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-13 08:43:51,592 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-13 08:43:51,594 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:43:51,596 WARN L196 ceAbstractionStarter]: Timeout [2021-06-13 08:43:51,596 INFO L202 PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:43:51 BasicIcfg [2021-06-13 08:43:51,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:43:51,596 INFO L168 Benchmark]: Toolchain (without parser) took 693092.01 ms. Allocated memory was 182.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 161.6 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-06-13 08:43:51,596 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 182.5 MB. Free memory is still 162.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:43:51,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.46 ms. Allocated memory is still 182.5 MB. Free memory was 161.6 MB in the beginning and 160.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 08:43:51,597 INFO L168 Benchmark]: Boogie Preprocessor took 12.35 ms. Allocated memory is still 182.5 MB. Free memory was 160.0 MB in the beginning and 159.1 MB in the end (delta: 896.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:43:51,597 INFO L168 Benchmark]: RCFGBuilder took 188.49 ms. Allocated memory is still 182.5 MB. Free memory was 159.1 MB in the beginning and 147.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 08:43:51,597 INFO L168 Benchmark]: TraceAbstraction took 692863.63 ms. Allocated memory was 182.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 146.6 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. [2021-06-13 08:43:51,597 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 0.11 ms. Allocated memory is still 182.5 MB. Free memory is still 162.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.46 ms. Allocated memory is still 182.5 MB. Free memory was 161.6 MB in the beginning and 160.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.35 ms. Allocated memory is still 182.5 MB. Free memory was 160.0 MB in the beginning and 159.1 MB in the end (delta: 896.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 188.49 ms. Allocated memory is still 182.5 MB. Free memory was 159.1 MB in the beginning and 147.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 692863.63 ms. Allocated memory was 182.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 146.6 MB in the beginning and 4.5 GB in the end (delta: -4.3 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 19 procedures, 85 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 182.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 692700.8ms, OverallIterations: 27, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 685905.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 436.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 829 SDtfs, 893 SDslu, 801 SDs, 0 SdLazy, 1515 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1382.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 5452.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30954occurred in iteration=26, InterpolantAutomatonStates: 222, 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: 45.7ms SsaConstructionTime, 131.4ms SatisfiabilityAnalysisTime, 5757.1ms InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 27685 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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