/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/POPL2022/bluetooth-correct05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:55:55,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:55:55,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:55:55,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:55:55,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:55:55,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:55:55,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:55:55,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:55:55,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:55:55,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:55:55,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:55:55,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:55:55,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:55:55,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:55:55,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:55:55,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:55:55,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:55:55,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:55:55,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:55:55,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:55:55,638 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 [2021-07-01 09:55:55,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:55:55,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:55:55,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:55:55,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:55:55,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:55:55,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:55:55,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:55:55,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:55:55,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:55:55,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:55:55,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:55:55,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:55:55,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:55:55,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:55:55,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:55:55,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:55:55,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:55:55,666 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:55:55,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-07-01 09:55:55,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:55:55,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:55:55,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:55:55,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:55:55,986 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:55:55,987 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:55:55,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct05.bpl [2021-07-01 09:55:55,988 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct05.bpl' [2021-07-01 09:55:56,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:55:56,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:55:56,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:55:56,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:55:56,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:55:56,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:55:56,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:55:56,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:55:56,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:55:56,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/1) ... [2021-07-01 09:55:56,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:55:56,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:55:56,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:55:56,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:55:56,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (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 [2021-07-01 09:55:56,147 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:55:56,147 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:55:56,149 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:55:56,149 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:55:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:55:56,150 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:55:56,150 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:55:56,150 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:55:56,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:55:56,151 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:55:56,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:55:56,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:55:56,152 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 09:55:56,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:55:56,343 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:55:56,344 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:55:56,344 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:55:56,346 INFO L202 PluginConnector]: Adding new model bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:55:56 BoogieIcfgContainer [2021-07-01 09:55:56,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:55:56,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:55:56,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:55:56,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:55:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:56" (1/2) ... [2021-07-01 09:55:56,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73bc6229 and model type bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:55:56, skipping insertion in model container [2021-07-01 09:55:56,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:55:56" (2/2) ... [2021-07-01 09:55:56,352 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct05.bpl [2021-07-01 09:55:56,357 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:55:56,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:55:56,358 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:55:56,388 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:55:56,417 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-01 09:55:56,449 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:55:56,449 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:55:56,449 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:55:56,449 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:55:56,449 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:55:56,450 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:55:56,450 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:55:56,450 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:55:56,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:55:56,522 INFO L129 PetriNetUnfolder]: 5/33 cut-off events. [2021-07-01 09:55:56,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 33 events. 5/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2021-07-01 09:55:56,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:55:56,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-07-01 09:55:56,528 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-07-01 09:55:56,529 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,529 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:55:56,531 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:55:56,535 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:55:56,535 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:55:56,535 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:55:56,535 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:55:56,536 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:55:56,536 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:55:56,536 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:55:56,536 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:55:56,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:55:56,555 INFO L129 PetriNetUnfolder]: 5/33 cut-off events. [2021-07-01 09:55:56,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 33 events. 5/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2021-07-01 09:55:56,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:55:56,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 33 transitions, 84 flow [2021-07-01 09:55:56,579 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-07-01 09:55:56,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,581 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1198405354, now seen corresponding path program 1 times [2021-07-01 09:55:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703155002] [2021-07-01 09:55:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:56,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703155002] [2021-07-01 09:55:56,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703155002] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:55:56,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108408135] [2021-07-01 09:55:56,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:55:56,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:55:56,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:55:56,772 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 39 [2021-07-01 09:55:56,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 39 [2021-07-01 09:55:56,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,803 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2021-07-01 09:55:56,803 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 92 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2021-07-01 09:55:56,805 INFO L132 encePairwiseOnDemand]: 35/39 looper letters, 2 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-07-01 09:55:56,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 96 flow [2021-07-01 09:55:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:55:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:55:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2021-07-01 09:55:56,820 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-07-01 09:55:56,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2021-07-01 09:55:56,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2021-07-01 09:55:56,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2021-07-01 09:55:56,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,835 INFO L185 Difference]: Start difference. First operand has 47 places, 33 transitions, 84 flow. Second operand 3 states and 111 transitions. [2021-07-01 09:55:56,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 96 flow [2021-07-01 09:55:56,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 90 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-07-01 09:55:56,846 INFO L241 Difference]: Finished difference. Result has 45 places, 34 transitions, 96 flow [2021-07-01 09:55:56,848 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2021-07-01 09:55:56,849 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2021-07-01 09:55:56,849 INFO L482 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 96 flow [2021-07-01 09:55:56,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,850 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:55:56,850 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1564077736, now seen corresponding path program 1 times [2021-07-01 09:55:56,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784439801] [2021-07-01 09:55:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:56,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784439801] [2021-07-01 09:55:56,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784439801] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:55:56,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677863333] [2021-07-01 09:55:56,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:55:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:55:56,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:55:56,903 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 39 [2021-07-01 09:55:56,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:56,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 39 [2021-07-01 09:55:56,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:57,036 INFO L129 PetriNetUnfolder]: 80/388 cut-off events. [2021-07-01 09:55:57,038 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2021-07-01 09:55:57,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 388 events. 80/388 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2733 event pairs, 49 based on Foata normal form. 89/449 useless extension candidates. Maximal degree in co-relation 654. Up to 82 conditions per place. [2021-07-01 09:55:57,047 INFO L132 encePairwiseOnDemand]: 33/39 looper letters, 6 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2021-07-01 09:55:57,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 110 flow [2021-07-01 09:55:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:55:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:55:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2021-07-01 09:55:57,055 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2021-07-01 09:55:57,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2021-07-01 09:55:57,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2021-07-01 09:55:57,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:57,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2021-07-01 09:55:57,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,059 INFO L185 Difference]: Start difference. First operand has 45 places, 34 transitions, 96 flow. Second operand 3 states and 108 transitions. [2021-07-01 09:55:57,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 110 flow [2021-07-01 09:55:57,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-07-01 09:55:57,066 INFO L241 Difference]: Finished difference. Result has 46 places, 34 transitions, 103 flow [2021-07-01 09:55:57,066 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2021-07-01 09:55:57,067 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2021-07-01 09:55:57,067 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 103 flow [2021-07-01 09:55:57,067 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,067 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:57,067 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:57,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:55:57,067 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -414434776, now seen corresponding path program 2 times [2021-07-01 09:55:57,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:57,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138718723] [2021-07-01 09:55:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:57,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:57,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:57,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:57,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:57,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138718723] [2021-07-01 09:55:57,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138718723] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:57,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:57,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:55:57,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538295941] [2021-07-01 09:55:57,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:55:57,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:57,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:55:57,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:55:57,162 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-07-01 09:55:57,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:57,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-07-01 09:55:57,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:57,292 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][35], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,293 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,293 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,293 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,293 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,308 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][35], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), 7#L70-2true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 30#L59true, 62#true]) [2021-07-01 09:55:57,309 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,309 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,309 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,311 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,324 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][36], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,324 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,324 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,324 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-07-01 09:55:57,325 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,335 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,336 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,336 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,336 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,336 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,375 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,375 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,376 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,376 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,376 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,384 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,385 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,385 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,385 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,385 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,421 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, Black: 56#true, 28#L70-2true, 62#true, 30#L59true]) [2021-07-01 09:55:57,421 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,421 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,421 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,421 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-07-01 09:55:57,483 INFO L129 PetriNetUnfolder]: 1116/1944 cut-off events. [2021-07-01 09:55:57,483 INFO L130 PetriNetUnfolder]: For 255/366 co-relation queries the response was YES. [2021-07-01 09:55:57,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 1944 events. 1116/1944 cut-off events. For 255/366 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10791 event pairs, 53 based on Foata normal form. 50/1925 useless extension candidates. Maximal degree in co-relation 4114. Up to 1044 conditions per place. [2021-07-01 09:55:57,502 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 17 selfloop transitions, 19 changer transitions 0/56 dead transitions. [2021-07-01 09:55:57,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 239 flow [2021-07-01 09:55:57,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:55:57,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-07-01 09:55:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2021-07-01 09:55:57,506 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8307692307692308 [2021-07-01 09:55:57,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2021-07-01 09:55:57,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2021-07-01 09:55:57,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:57,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2021-07-01 09:55:57,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,512 INFO L185 Difference]: Start difference. First operand has 46 places, 34 transitions, 103 flow. Second operand 5 states and 162 transitions. [2021-07-01 09:55:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 239 flow [2021-07-01 09:55:57,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:57,520 INFO L241 Difference]: Finished difference. Result has 50 places, 51 transitions, 226 flow [2021-07-01 09:55:57,520 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2021-07-01 09:55:57,521 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2021-07-01 09:55:57,521 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 226 flow [2021-07-01 09:55:57,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:57,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:57,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:55:57,522 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash 648785977, now seen corresponding path program 1 times [2021-07-01 09:55:57,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:57,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032093630] [2021-07-01 09:55:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:57,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:57,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:57,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:57,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:57,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:57,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032093630] [2021-07-01 09:55:57,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032093630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:57,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:57,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 09:55:57,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140860137] [2021-07-01 09:55:57,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:55:57,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:55:57,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:55:57,646 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-07-01 09:55:57,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:57,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:57,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-07-01 09:55:57,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:57,758 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][51], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,759 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,759 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,759 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,759 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,763 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][51], [Black: 64#stoppingFlag, 7#L70-2true, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,763 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,763 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,763 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,763 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:57,778 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][52], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,779 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,779 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,779 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:57,779 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-07-01 09:55:57,814 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][65], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,815 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is not cut-off event [2021-07-01 09:55:57,815 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:57,815 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is not cut-off event [2021-07-01 09:55:57,815 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:57,819 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][53], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,819 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,819 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,819 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,820 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,820 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][53], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,820 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,820 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,820 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,820 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:57,844 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][52], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:57,845 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,845 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,845 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:57,845 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-07-01 09:55:57,990 INFO L129 PetriNetUnfolder]: 1904/3131 cut-off events. [2021-07-01 09:55:57,990 INFO L130 PetriNetUnfolder]: For 1093/1445 co-relation queries the response was YES. [2021-07-01 09:55:58,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9696 conditions, 3131 events. 1904/3131 cut-off events. For 1093/1445 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17245 event pairs, 42 based on Foata normal form. 107/3175 useless extension candidates. Maximal degree in co-relation 9678. Up to 1457 conditions per place. [2021-07-01 09:55:58,082 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 17 selfloop transitions, 57 changer transitions 7/101 dead transitions. [2021-07-01 09:55:58,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 101 transitions, 645 flow [2021-07-01 09:55:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:55:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-07-01 09:55:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2021-07-01 09:55:58,084 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8504273504273504 [2021-07-01 09:55:58,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 199 transitions. [2021-07-01 09:55:58,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 199 transitions. [2021-07-01 09:55:58,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:58,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 199 transitions. [2021-07-01 09:55:58,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,087 INFO L185 Difference]: Start difference. First operand has 50 places, 51 transitions, 226 flow. Second operand 6 states and 199 transitions. [2021-07-01 09:55:58,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 101 transitions, 645 flow [2021-07-01 09:55:58,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:58,094 INFO L241 Difference]: Finished difference. Result has 56 places, 89 transitions, 649 flow [2021-07-01 09:55:58,094 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=649, PETRI_PLACES=56, PETRI_TRANSITIONS=89} [2021-07-01 09:55:58,095 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2021-07-01 09:55:58,095 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 89 transitions, 649 flow [2021-07-01 09:55:58,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,095 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:58,095 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:58,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:55:58,096 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:58,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:58,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1524457772, now seen corresponding path program 1 times [2021-07-01 09:55:58,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:58,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855252683] [2021-07-01 09:55:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:58,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:58,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:58,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:58,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:58,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:58,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:58,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855252683] [2021-07-01 09:55:58,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855252683] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:58,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:58,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-01 09:55:58,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674942147] [2021-07-01 09:55:58,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:55:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:58,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:55:58,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:55:58,210 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-07-01 09:55:58,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 89 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:58,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-07-01 09:55:58,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:58,398 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][44], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,398 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,398 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,398 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,398 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,406 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][44], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,406 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,406 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:58,406 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,407 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:58,446 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][42], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,447 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:55:58,447 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-07-01 09:55:58,447 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:58,447 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:58,494 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][62], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, 79#(and (not stoppingEvent) (<= 2 pendingIo)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 89#(and (not stoppingEvent) (<= 2 pendingIo)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,494 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is not cut-off event [2021-07-01 09:55:58,494 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is not cut-off event [2021-07-01 09:55:58,494 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:58,494 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:58,501 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][46], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,501 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,501 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,501 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,501 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:58,503 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][46], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,503 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,503 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:58,503 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,503 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:58,536 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][42], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, DeviceThreadThread1of1ForFork4InUse, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 56#true, 30#L59true]) [2021-07-01 09:55:58,537 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2021-07-01 09:55:58,537 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:58,537 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:58,537 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-07-01 09:55:58,832 INFO L129 PetriNetUnfolder]: 2589/4098 cut-off events. [2021-07-01 09:55:58,832 INFO L130 PetriNetUnfolder]: For 4967/5342 co-relation queries the response was YES. [2021-07-01 09:55:58,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18078 conditions, 4098 events. 2589/4098 cut-off events. For 4967/5342 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 21700 event pairs, 59 based on Foata normal form. 137/4181 useless extension candidates. Maximal degree in co-relation 18056. Up to 2044 conditions per place. [2021-07-01 09:55:58,884 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 17 selfloop transitions, 131 changer transitions 10/178 dead transitions. [2021-07-01 09:55:58,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 178 transitions, 1688 flow [2021-07-01 09:55:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:55:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-07-01 09:55:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2021-07-01 09:55:58,886 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8644688644688645 [2021-07-01 09:55:58,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 236 transitions. [2021-07-01 09:55:58,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 236 transitions. [2021-07-01 09:55:58,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:58,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 236 transitions. [2021-07-01 09:55:58,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,889 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,889 INFO L185 Difference]: Start difference. First operand has 56 places, 89 transitions, 649 flow. Second operand 7 states and 236 transitions. [2021-07-01 09:55:58,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 178 transitions, 1688 flow [2021-07-01 09:55:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 178 transitions, 1626 flow, removed 30 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:58,904 INFO L241 Difference]: Finished difference. Result has 64 places, 168 transitions, 1756 flow [2021-07-01 09:55:58,904 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1756, PETRI_PLACES=64, PETRI_TRANSITIONS=168} [2021-07-01 09:55:58,904 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2021-07-01 09:55:58,904 INFO L482 AbstractCegarLoop]: Abstraction has has 64 places, 168 transitions, 1756 flow [2021-07-01 09:55:58,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.125) internal successors, (209), 8 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:58,905 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:58,905 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] [2021-07-01 09:55:58,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 09:55:58,949 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash 182559207, now seen corresponding path program 1 times [2021-07-01 09:55:58,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:58,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127817789] [2021-07-01 09:55:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:59,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:59,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:59,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:59,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:59,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127817789] [2021-07-01 09:55:59,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127817789] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:59,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:59,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-01 09:55:59,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166810608] [2021-07-01 09:55:59,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-01 09:55:59,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:59,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-01 09:55:59,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-01 09:55:59,066 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-07-01 09:55:59,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 168 transitions, 1756 flow. Second operand has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:59,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-07-01 09:55:59,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:59,193 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][39], [Black: 64#stoppingFlag, 102#(and (<= 3 pendingIo) (not stoppingEvent)), 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork2InUse, Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 56#true, 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 89#(and (not stoppingEvent) (<= 2 pendingIo))]) [2021-07-01 09:55:59,194 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,194 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,194 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,194 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,200 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][39], [Black: 64#stoppingFlag, 102#(and (<= 3 pendingIo) (not stoppingEvent)), 7#L70-2true, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 16#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 56#true, 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo))]) [2021-07-01 09:55:59,200 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,200 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:59,200 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,201 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:55:59,229 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][38], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), 103#(and (<= 4 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:55:59,229 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:55:59,230 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-07-01 09:55:59,230 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:59,230 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:55:59,280 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][57], [Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 64#stoppingFlag, 67#true, 101#(and (not stoppingEvent) (<= 2 pendingIo)), 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, 79#(and (not stoppingEvent) (<= 2 pendingIo)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 89#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 56#true, 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true]) [2021-07-01 09:55:59,280 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is not cut-off event [2021-07-01 09:55:59,280 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is not cut-off event [2021-07-01 09:55:59,281 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:59,281 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:55:59,291 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork3InUse, 18#L70-2true, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 56#true, 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 89#(and (not stoppingEvent) (<= 2 pendingIo))]) [2021-07-01 09:55:59,291 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,291 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:59,291 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,291 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,292 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][43], [Black: 64#stoppingFlag, 67#true, 102#(and (<= 3 pendingIo) (not stoppingEvent)), 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork5InUse, 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, DeviceThreadThread1of1ForFork4InUse, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 56#true, 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo))]) [2021-07-01 09:55:59,292 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,292 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,292 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:55:59,292 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:59,338 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][38], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), 103#(and (<= 4 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:55:59,338 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2021-07-01 09:55:59,338 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-07-01 09:55:59,338 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:59,338 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:55:59,734 INFO L129 PetriNetUnfolder]: 2838/4368 cut-off events. [2021-07-01 09:55:59,734 INFO L130 PetriNetUnfolder]: For 8193/8910 co-relation queries the response was YES. [2021-07-01 09:55:59,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23821 conditions, 4368 events. 2838/4368 cut-off events. For 8193/8910 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21543 event pairs, 49 based on Foata normal form. 148/4478 useless extension candidates. Maximal degree in co-relation 23794. Up to 1625 conditions per place. [2021-07-01 09:55:59,862 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 22 selfloop transitions, 256 changer transitions 14/312 dead transitions. [2021-07-01 09:55:59,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 312 transitions, 3802 flow [2021-07-01 09:55:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:55:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-07-01 09:55:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2021-07-01 09:55:59,864 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-07-01 09:55:59,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 273 transitions. [2021-07-01 09:55:59,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 273 transitions. [2021-07-01 09:55:59,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:59,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 273 transitions. [2021-07-01 09:55:59,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.125) internal successors, (273), 8 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,866 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 39.0) internal successors, (351), 9 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,866 INFO L185 Difference]: Start difference. First operand has 64 places, 168 transitions, 1756 flow. Second operand 8 states and 273 transitions. [2021-07-01 09:55:59,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 312 transitions, 3802 flow [2021-07-01 09:55:59,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 312 transitions, 3628 flow, removed 86 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:59,897 INFO L241 Difference]: Finished difference. Result has 74 places, 298 transitions, 3938 flow [2021-07-01 09:55:59,898 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3938, PETRI_PLACES=74, PETRI_TRANSITIONS=298} [2021-07-01 09:55:59,898 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, 27 predicate places. [2021-07-01 09:55:59,898 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 298 transitions, 3938 flow [2021-07-01 09:55:59,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,899 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:59,899 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] [2021-07-01 09:55:59,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-01 09:55:59,899 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:59,899 INFO L82 PathProgramCache]: Analyzing trace with hash -458815646, now seen corresponding path program 1 times [2021-07-01 09:55:59,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:59,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821407927] [2021-07-01 09:55:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:59,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:59,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:59,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:59,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:59,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:55:59,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:59,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821407927] [2021-07-01 09:55:59,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821407927] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:59,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:59,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-01 09:55:59,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424227004] [2021-07-01 09:55:59,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 09:55:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 09:55:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-01 09:55:59,986 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-07-01 09:55:59,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 298 transitions, 3938 flow. Second operand has 10 states, 10 states have (on average 26.3) internal successors, (263), 10 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:55:59,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:59,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-07-01 09:55:59,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:56:00,103 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][39], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 18#L70-2true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 103#(and (<= 4 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 116#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,104 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,104 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,104 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,104 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,110 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][39], [Black: 64#stoppingFlag, 7#L70-2true, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 103#(and (<= 4 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 116#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,111 INFO L384 tUnfolder$Statistics]: this new event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,111 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:56:00,111 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,111 INFO L387 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2021-07-01 09:56:00,141 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][41], [Black: 64#stoppingFlag, 71#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), 103#(and (<= 4 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 102#(and (<= 3 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 117#(and (<= 4 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,142 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2021-07-01 09:56:00,142 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:56:00,142 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2021-07-01 09:56:00,142 INFO L387 tUnfolder$Statistics]: existing Event has 13 ancestors and is cut-off event [2021-07-01 09:56:00,191 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][58], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 79#(and (not stoppingEvent) (<= 2 pendingIo)), 18#L70-2true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 89#(and (not stoppingEvent) (<= 2 pendingIo)), 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), 101#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 103#(and (<= 4 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, 115#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork2InUse, DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,191 INFO L384 tUnfolder$Statistics]: this new event has 15 ancestors and is not cut-off event [2021-07-01 09:56:00,191 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:56:00,191 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is not cut-off event [2021-07-01 09:56:00,191 INFO L387 tUnfolder$Statistics]: existing Event has 15 ancestors and is not cut-off event [2021-07-01 09:56:00,201 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][40], [Black: 64#stoppingFlag, 67#true, 7#L70-2true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 103#(and (<= 4 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 116#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,202 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,202 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:56:00,202 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,202 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,237 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][40], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 18#L70-2true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 90#(and (<= 3 pendingIo) (not stoppingEvent)), 28#L70-2true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), 30#L59true, Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), 102#(and (<= 3 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadWithAssertThread1of1ForFork1InUse, Black: 103#(and (<= 4 pendingIo) (not stoppingEvent)), ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 116#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,237 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,237 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,237 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:56:00,237 INFO L387 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2021-07-01 09:56:00,268 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([102] L70-2-->L59: Formula: (and (not v_stoppingFlag_5) (= v_pendingIo_18 (+ v_pendingIo_19 1))) InVars {pendingIo=v_pendingIo_19, stoppingFlag=v_stoppingFlag_5} OutVars{pendingIo=v_pendingIo_18, stoppingFlag=v_stoppingFlag_5} AuxVars[] AssignedVars[pendingIo][41], [Black: 64#stoppingFlag, 67#true, Black: 70#(and (<= 1 pendingIo) (not stoppingEvent)), 12#L59true, 80#(and (<= 3 pendingIo) (not stoppingEvent)), 16#L59true, Black: 78#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 79#(and (not stoppingEvent) (<= 2 pendingIo)), 22#ServerThreadENTRYtrue, 23#ULTIMATE.startFINALtrue, 25#L70-2true, 91#(and (<= 4 pendingIo) (not stoppingEvent)), 28#L70-2true, 30#L59true, Black: 88#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 89#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 90#(and (<= 3 pendingIo) (not stoppingEvent)), 103#(and (<= 4 pendingIo) (not stoppingEvent)), Black: 100#(and (<= 1 pendingIo) (not stoppingEvent)), Black: 101#(and (not stoppingEvent) (<= 2 pendingIo)), Black: 102#(and (<= 3 pendingIo) (not stoppingEvent)), DeviceThreadWithAssertThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork2InUse, 117#(and (<= 4 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork5InUse, DeviceThreadThread1of1ForFork4InUse, Black: 56#true]) [2021-07-01 09:56:00,268 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2021-07-01 09:56:00,268 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:56:00,268 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-07-01 09:56:00,268 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-07-01 09:56:00,581 INFO L129 PetriNetUnfolder]: 2470/3696 cut-off events. [2021-07-01 09:56:00,581 INFO L130 PetriNetUnfolder]: For 10246/11166 co-relation queries the response was YES. [2021-07-01 09:56:00,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25197 conditions, 3696 events. 2470/3696 cut-off events. For 10246/11166 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17435 event pairs, 0 based on Foata normal form. 130/3820 useless extension candidates. Maximal degree in co-relation 25164. Up to 1308 conditions per place. [2021-07-01 09:56:00,610 INFO L132 encePairwiseOnDemand]: 25/39 looper letters, 0 selfloop transitions, 0 changer transitions 480/480 dead transitions. [2021-07-01 09:56:00,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 480 transitions, 7062 flow [2021-07-01 09:56:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:56:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-07-01 09:56:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2021-07-01 09:56:00,612 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8376068376068376 [2021-07-01 09:56:00,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 294 transitions. [2021-07-01 09:56:00,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 294 transitions. [2021-07-01 09:56:00,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:56:00,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 294 transitions. [2021-07-01 09:56:00,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:56:00,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:56:00,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:56:00,614 INFO L185 Difference]: Start difference. First operand has 74 places, 298 transitions, 3938 flow. Second operand 9 states and 294 transitions. [2021-07-01 09:56:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 480 transitions, 7062 flow [2021-07-01 09:56:00,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 480 transitions, 6862 flow, removed 97 selfloop flow, removed 3 redundant places. [2021-07-01 09:56:00,676 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-07-01 09:56:00,677 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-07-01 09:56:00,677 INFO L335 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2021-07-01 09:56:00,677 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-07-01 09:56:00,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.3) internal successors, (263), 10 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:56:00,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-01 09:56:00,678 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-01 09:56:00,678 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:56:00,681 INFO L202 PluginConnector]: Adding new model bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:56:00 BasicIcfg [2021-07-01 09:56:00,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:56:00,685 INFO L168 Benchmark]: Toolchain (without parser) took 4661.10 ms. Allocated memory was 204.5 MB in the beginning and 475.0 MB in the end (delta: 270.5 MB). Free memory was 184.4 MB in the beginning and 235.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 219.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:00,685 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 204.5 MB. Free memory is still 185.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:56:00,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 204.5 MB. Free memory was 184.3 MB in the beginning and 182.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:00,688 INFO L168 Benchmark]: Boogie Preprocessor took 19.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 181.5 MB in the end (delta: 916.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:00,689 INFO L168 Benchmark]: RCFGBuilder took 270.33 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 166.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:00,689 INFO L168 Benchmark]: TraceAbstraction took 4334.26 ms. Allocated memory was 204.5 MB in the beginning and 475.0 MB in the end (delta: 270.5 MB). Free memory was 165.9 MB in the beginning and 235.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:00,692 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 204.5 MB. Free memory is still 185.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 204.5 MB. Free memory was 184.3 MB in the beginning and 182.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 181.5 MB in the end (delta: 916.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 270.33 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 166.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4334.26 ms. Allocated memory was 204.5 MB in the beginning and 475.0 MB in the end (delta: 270.5 MB). Free memory was 165.9 MB in the beginning and 235.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 96.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 78.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadWithAssertThread1of1ForFork1 with 1 thread instances CFG has 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4143.7ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3282.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 30 SDs, 0 SdLazy, 426 SolverSat, 278 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 391.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 187.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3938occurred in iteration=6, InterpolantAutomatonStates: 41, 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: 17.1ms SsaConstructionTime, 64.4ms SatisfiabilityAnalysisTime, 485.4ms InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...