/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/bluetooth05-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:22:07,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:22:07,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:22:07,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:22:07,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:22:07,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:22:07,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:22:07,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:22:07,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:22:07,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:22:07,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:22:07,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:22:07,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:22:07,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:22:07,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:22:07,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:22:07,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:22:07,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:22:07,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:22:07,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:22:07,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:22:07,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:22:07,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:22:07,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:22:07,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:22:07,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:22:07,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:22:07,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:22:07,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-24 18:22:07,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:22:07,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:22:07,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:22:07,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:22:07,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:22:07,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:22:07,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:22:07,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:22:07,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:22:07,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:22:07,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:22:07,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:22:07,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:22:07,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:22:07,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:22:07,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:22:07,998 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:22:07,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-24 18:22:07,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:22:08,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:22:08,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:22:08,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:22:08,245 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:22:08,246 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:22:08,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl [2021-06-24 18:22:08,247 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth05-incorrect.bpl' [2021-06-24 18:22:08,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:22:08,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:22:08,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:22:08,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:22:08,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:22:08,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:22:08,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:22:08,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:22:08,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:22:08,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... [2021-06-24 18:22:08,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:22:08,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:22:08,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:22:08,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:22:08,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:22:08,362 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:22:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:22:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:22:08,363 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:22:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:22:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:22:08,364 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:22:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:22:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:22:08,365 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 18:22:08,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:22:08,596 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:22:08,597 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:22:08 BoogieIcfgContainer [2021-06-24 18:22:08,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:22:08,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:22:08,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:22:08,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:22:08,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:22:08" (1/2) ... [2021-06-24 18:22:08,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba710e and model type bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:22:08, skipping insertion in model container [2021-06-24 18:22:08,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:22:08" (2/2) ... [2021-06-24 18:22:08,602 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth05-incorrect.bpl [2021-06-24 18:22:08,605 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:22:08,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:22:08,606 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:22:08,634 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:22:08,668 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-24 18:22:08,696 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:22:08,696 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:22:08,696 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:22:08,696 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:22:08,696 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:22:08,696 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:22:08,696 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:22:08,696 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:22:08,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 52 transitions, 134 flow [2021-06-24 18:22:08,724 INFO L129 PetriNetUnfolder]: 5/46 cut-off events. [2021-06-24 18:22:08,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-24 18:22:08,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 46 events. 5/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 131 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-06-24 18:22:08,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 52 transitions, 134 flow [2021-06-24 18:22:08,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-24 18:22:08,731 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-24 18:22:08,731 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-24 18:22:08,732 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/6) [2021-06-24 18:22:08,733 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:22:08,735 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:22:08,735 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:22:08,735 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:22:08,736 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:22:08,736 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:22:08,736 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:22:08,736 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:22:08,736 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:22:08,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 52 transitions, 134 flow [2021-06-24 18:22:08,770 INFO L129 PetriNetUnfolder]: 5/46 cut-off events. [2021-06-24 18:22:08,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-24 18:22:08,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 46 events. 5/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 131 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2021-06-24 18:22:08,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 52 transitions, 134 flow [2021-06-24 18:22:08,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 46 transitions, 110 flow [2021-06-24 18:22:08,791 INFO L129 PetriNetUnfolder]: 4/42 cut-off events. [2021-06-24 18:22:08,791 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-24 18:22:08,792 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-24 18:22:08,792 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:22:08,793 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:22:08,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:22:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1347614714, now seen corresponding path program 1 times [2021-06-24 18:22:08,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:22:08,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323243847] [2021-06-24 18:22:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:22:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:22:08,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:22:08,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:08,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:22:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:22:08,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:22:08,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323243847] [2021-06-24 18:22:08,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323243847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:22:08,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:22:08,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:22:08,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472982357] [2021-06-24 18:22:08,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:22:08,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:22:08,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:22:08,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:22:08,911 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 52 [2021-06-24 18:22:08,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:08,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-24 18:22:08,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 52 [2021-06-24 18:22:08,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-24 18:22:09,164 INFO L129 PetriNetUnfolder]: 1019/1793 cut-off events. [2021-06-24 18:22:09,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-24 18:22:09,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3133 conditions, 1793 events. 1019/1793 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 11317 event pairs, 437 based on Foata normal form. 0/1302 useless extension candidates. Maximal degree in co-relation 3117. Up to 883 conditions per place. [2021-06-24 18:22:09,188 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 10 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2021-06-24 18:22:09,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 154 flow [2021-06-24 18:22:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:22:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-24 18:22:09,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2021-06-24 18:22:09,197 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9102564102564102 [2021-06-24 18:22:09,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2021-06-24 18:22:09,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2021-06-24 18:22:09,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-24 18:22:09,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2021-06-24 18:22:09,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,205 INFO L185 Difference]: Start difference. First operand has 60 places, 46 transitions, 110 flow. Second operand 3 states and 142 transitions. [2021-06-24 18:22:09,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 154 flow [2021-06-24 18:22:09,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-24 18:22:09,216 INFO L241 Difference]: Finished difference. Result has 58 places, 51 transitions, 162 flow [2021-06-24 18:22:09,218 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2021-06-24 18:22:09,218 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2021-06-24 18:22:09,218 INFO L482 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 162 flow [2021-06-24 18:22:09,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,219 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-24 18:22:09,219 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:22:09,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:22:09,219 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:22:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:22:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 545860420, now seen corresponding path program 1 times [2021-06-24 18:22:09,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:22:09,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519944537] [2021-06-24 18:22:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:22:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:22:09,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:22:09,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:22:09,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:22:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:22:09,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:22:09,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519944537] [2021-06-24 18:22:09,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519944537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:22:09,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:22:09,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:22:09,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966691253] [2021-06-24 18:22:09,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:22:09,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:22:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:22:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:22:09,274 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 52 [2021-06-24 18:22:09,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-24 18:22:09,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 52 [2021-06-24 18:22:09,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-24 18:22:09,772 INFO L129 PetriNetUnfolder]: 2873/6172 cut-off events. [2021-06-24 18:22:09,772 INFO L130 PetriNetUnfolder]: For 1192/1192 co-relation queries the response was YES. [2021-06-24 18:22:09,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12193 conditions, 6172 events. 2873/6172 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 57355 event pairs, 1202 based on Foata normal form. 492/6406 useless extension candidates. Maximal degree in co-relation 12179. Up to 2511 conditions per place. [2021-06-24 18:22:09,829 INFO L132 encePairwiseOnDemand]: 46/52 looper letters, 6 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2021-06-24 18:22:09,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 176 flow [2021-06-24 18:22:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:22:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-24 18:22:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2021-06-24 18:22:09,837 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9423076923076923 [2021-06-24 18:22:09,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2021-06-24 18:22:09,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2021-06-24 18:22:09,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-24 18:22:09,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2021-06-24 18:22:09,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,845 INFO L185 Difference]: Start difference. First operand has 58 places, 51 transitions, 162 flow. Second operand 3 states and 147 transitions. [2021-06-24 18:22:09,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 176 flow [2021-06-24 18:22:09,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-24 18:22:09,863 INFO L241 Difference]: Finished difference. Result has 59 places, 51 transitions, 161 flow [2021-06-24 18:22:09,864 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2021-06-24 18:22:09,864 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2021-06-24 18:22:09,864 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 161 flow [2021-06-24 18:22:09,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:09,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-24 18:22:09,865 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:22:09,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:22:09,865 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:22:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:22:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2081848124, now seen corresponding path program 2 times [2021-06-24 18:22:09,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:22:09,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371902806] [2021-06-24 18:22:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:22:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:22:09,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:22:09,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:22:09,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:22:10,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:10,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:22:10,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:22:10,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:22:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:22:10,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:22:10,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371902806] [2021-06-24 18:22:10,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371902806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:22:10,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:22:10,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:22:10,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161760212] [2021-06-24 18:22:10,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:22:10,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:22:10,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:22:10,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:22:10,009 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 52 [2021-06-24 18:22:10,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:10,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-24 18:22:10,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 52 [2021-06-24 18:22:10,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-24 18:22:10,560 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([70] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][28], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, 36#L47true, 7#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, Black: 77#stoppingFlag, 80#true, 26#L47true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 28#L22true, 29#L47true, DeviceThreadThread1of1ForFork2InUse]) [2021-06-24 18:22:10,561 INFO L384 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2021-06-24 18:22:10,561 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-24 18:22:10,561 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-24 18:22:10,561 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-06-24 18:22:10,561 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 7#L56-2true, 8#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, 15#ULTIMATE.startFINALtrue, Black: 77#stoppingFlag, 80#true, 26#L47true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse]) [2021-06-24 18:22:10,561 INFO L384 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,561 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,562 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,562 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,777 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 7#L56-2true, 8#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, 15#ULTIMATE.startFINALtrue, Black: 77#stoppingFlag, 80#true, DeviceThreadThread1of1ForFork1InUse, 26#L47true, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse]) [2021-06-24 18:22:10,777 INFO L384 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,778 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,778 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,779 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:10,779 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:11,053 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 8#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, Black: 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 80#true, DeviceThreadThread1of1ForFork1InUse, 26#L47true, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:11,054 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,054 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,054 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,054 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,064 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 36#L47true, 37#L47true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, Black: 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 80#true, 56#L56-2true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:11,065 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,065 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,065 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,065 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:11,361 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 8#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, 15#ULTIMATE.startFINALtrue, 47#L42true, Black: 77#stoppingFlag, 83#(and (<= 1 pendingIo) (not stoppingEvent)), DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:11,361 INFO L384 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2021-06-24 18:22:11,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-24 18:22:11,361 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-24 18:22:11,361 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-06-24 18:22:11,720 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([101] L77-->L79-2: Formula: (and (let ((.cse0 (= v_pendingIo_20 0))) (or (and .cse0 v_stoppingEvent_13) (and (= v_stoppingEvent_13 v_stoppingEvent_14) (not .cse0)))) (= v_pendingIo_20 (+ v_pendingIo_21 (- 1)))) InVars {pendingIo=v_pendingIo_21, stoppingEvent=v_stoppingEvent_14} OutVars{pendingIo=v_pendingIo_20, stoppingEvent=v_stoppingEvent_13} AuxVars[] AssignedVars[stoppingEvent, pendingIo][72], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, 3#L56-2true, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 8#L56-2true, Black: 69#true, 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 80#true, 50#L79-2true, DeviceThreadThread1of1ForFork1InUse, 26#L47true, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:11,721 INFO L384 tUnfolder$Statistics]: this new event has 27 ancestors and is cut-off event [2021-06-24 18:22:11,721 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-06-24 18:22:11,721 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-06-24 18:22:11,721 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-06-24 18:22:12,152 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([101] L77-->L79-2: Formula: (and (let ((.cse0 (= v_pendingIo_20 0))) (or (and .cse0 v_stoppingEvent_13) (and (= v_stoppingEvent_13 v_stoppingEvent_14) (not .cse0)))) (= v_pendingIo_20 (+ v_pendingIo_21 (- 1)))) InVars {pendingIo=v_pendingIo_21, stoppingEvent=v_stoppingEvent_14} OutVars{pendingIo=v_pendingIo_20, stoppingEvent=v_stoppingEvent_13} AuxVars[] AssignedVars[stoppingEvent, pendingIo][72], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, 3#L56-2true, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 8#L56-2true, Black: 69#true, 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 47#L42true, 80#true, 50#L79-2true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:12,152 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-06-24 18:22:12,153 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-06-24 18:22:12,153 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-06-24 18:22:12,153 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-06-24 18:22:12,195 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([76] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][38], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, 36#L47true, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 7#L56-2true, Black: 69#true, 75#true, 45#ServerThreadENTRYtrue, 15#ULTIMATE.startFINALtrue, Black: 77#stoppingFlag, 80#true, 56#L56-2true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse]) [2021-06-24 18:22:12,196 INFO L384 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2021-06-24 18:22:12,196 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:12,196 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:12,196 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-06-24 18:22:12,509 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([88] L56-2-->L47: Formula: (not v_stoppingFlag_1) InVars {stoppingFlag=v_stoppingFlag_1} OutVars{stoppingFlag=v_stoppingFlag_1} AuxVars[] AssignedVars[][19], [DeviceThreadThread1of1ForFork3InUse, Black: 69#true, 75#true, 11#L21true, 45#ServerThreadENTRYtrue, Black: 77#stoppingFlag, 80#true, DeviceThreadThread1of1ForFork1InUse, 26#L47true, ServerThreadThread1of1ForFork0InUse, 29#L47true, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:12,509 INFO L384 tUnfolder$Statistics]: this new event has 27 ancestors and is cut-off event [2021-06-24 18:22:12,509 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-24 18:22:12,509 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-24 18:22:12,509 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-06-24 18:22:13,152 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([101] L77-->L79-2: Formula: (and (let ((.cse0 (= v_pendingIo_20 0))) (or (and .cse0 v_stoppingEvent_13) (and (= v_stoppingEvent_13 v_stoppingEvent_14) (not .cse0)))) (= v_pendingIo_20 (+ v_pendingIo_21 (- 1)))) InVars {pendingIo=v_pendingIo_21, stoppingEvent=v_stoppingEvent_14} OutVars{pendingIo=v_pendingIo_20, stoppingEvent=v_stoppingEvent_13} AuxVars[] AssignedVars[stoppingEvent, pendingIo][72], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 8#L56-2true, Black: 69#true, 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 80#true, 49#L42true, 50#L79-2true, 54#L42true, DeviceThreadThread1of1ForFork1InUse, 26#L47true, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:13,152 INFO L384 tUnfolder$Statistics]: this new event has 30 ancestors and is cut-off event [2021-06-24 18:22:13,153 INFO L387 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2021-06-24 18:22:13,153 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-06-24 18:22:13,153 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-06-24 18:22:13,166 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([80] L42-->L54: Formula: (not v_stopped_2) InVars {stopped=v_stopped_2} OutVars{stopped=v_stopped_2} AuxVars[] AssignedVars[][57], [DeviceThreadThread1of1ForFork3InUse, 32#L54true, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 40#L54true, Black: 69#true, 75#true, 43#L54true, 45#ServerThreadENTRYtrue, Black: 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 49#L42true, 84#(and (not stoppingEvent) (<= 2 pendingIo)), DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:13,166 INFO L384 tUnfolder$Statistics]: this new event has 30 ancestors and is cut-off event [2021-06-24 18:22:13,166 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-06-24 18:22:13,166 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-06-24 18:22:13,166 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-06-24 18:22:13,320 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([101] L77-->L79-2: Formula: (and (let ((.cse0 (= v_pendingIo_20 0))) (or (and .cse0 v_stoppingEvent_13) (and (= v_stoppingEvent_13 v_stoppingEvent_14) (not .cse0)))) (= v_pendingIo_20 (+ v_pendingIo_21 (- 1)))) InVars {pendingIo=v_pendingIo_21, stoppingEvent=v_stoppingEvent_14} OutVars{pendingIo=v_pendingIo_20, stoppingEvent=v_stoppingEvent_13} AuxVars[] AssignedVars[stoppingEvent, pendingIo][72], [DeviceThreadThread1of1ForFork3InUse, DeviceThreadThread1of1ForFork4InUse, DeviceThreadThread1of1ForFork5InUse, 37#L47true, 8#L56-2true, Black: 69#true, 77#stoppingFlag, 15#ULTIMATE.startFINALtrue, 80#true, 49#L42true, 50#L79-2true, 26#L47true, DeviceThreadThread1of1ForFork1InUse, ServerThreadThread1of1ForFork0InUse, DeviceThreadThread1of1ForFork2InUse, 31#L47true]) [2021-06-24 18:22:13,321 INFO L384 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2021-06-24 18:22:13,321 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-06-24 18:22:13,321 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2021-06-24 18:22:13,321 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2021-06-24 18:22:13,391 INFO L129 PetriNetUnfolder]: 26559/44048 cut-off events. [2021-06-24 18:22:13,391 INFO L130 PetriNetUnfolder]: For 668/668 co-relation queries the response was YES. [2021-06-24 18:22:13,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85110 conditions, 44048 events. 26559/44048 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 2933. Compared 393130 event pairs, 7868 based on Foata normal form. 1189/37240 useless extension candidates. Maximal degree in co-relation 85095. Up to 16505 conditions per place. [2021-06-24 18:22:13,962 INFO L132 encePairwiseOnDemand]: 38/52 looper letters, 17 selfloop transitions, 19 changer transitions 0/73 dead transitions. [2021-06-24 18:22:13,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 277 flow [2021-06-24 18:22:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:22:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-24 18:22:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2021-06-24 18:22:13,969 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8769230769230769 [2021-06-24 18:22:13,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 228 transitions. [2021-06-24 18:22:13,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 228 transitions. [2021-06-24 18:22:13,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-24 18:22:13,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 228 transitions. [2021-06-24 18:22:13,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:13,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-06-24 18:22:13,973 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 52.0) internal successors, (312), 6 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) [2021-06-24 18:22:13,973 INFO L185 Difference]: Start difference. First operand has 59 places, 51 transitions, 161 flow. Second operand 5 states and 228 transitions. [2021-06-24 18:22:13,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 277 flow [2021-06-24 18:22:13,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-24 18:22:13,977 INFO L241 Difference]: Finished difference. Result has 64 places, 68 transitions, 287 flow [2021-06-24 18:22:13,977 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2021-06-24 18:22:13,977 INFO L335 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2021-06-24 18:22:13,977 INFO L482 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 287 flow [2021-06-24 18:22:13,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 38.833333333333336) internal successors, (233), 6 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:22:13,977 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-24 18:22:13,978 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:22:13,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:22:13,978 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:22:13,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:22:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1279307414, now seen corresponding path program 3 times [2021-06-24 18:22:13,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:22:13,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047897786] [2021-06-24 18:22:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:22:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:22:13,995 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:22:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:22:14,005 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:22:14,019 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:22:14,020 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:22:14,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:22:14,020 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was UNSAFE (2/6) [2021-06-24 18:22:14,021 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:22:14,042 INFO L202 PluginConnector]: Adding new model bluetooth05-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:22:14 BasicIcfg [2021-06-24 18:22:14,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:22:14,043 INFO L168 Benchmark]: Toolchain (without parser) took 5775.02 ms. Allocated memory was 189.8 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 170.3 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 398.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:22:14,044 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 189.8 MB. Free memory is still 171.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:22:14,044 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.18 ms. Allocated memory is still 189.8 MB. Free memory was 170.2 MB in the beginning and 168.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:22:14,045 INFO L168 Benchmark]: Boogie Preprocessor took 10.30 ms. Allocated memory is still 189.8 MB. Free memory was 168.5 MB in the beginning and 167.6 MB in the end (delta: 854.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:22:14,048 INFO L168 Benchmark]: RCFGBuilder took 288.04 ms. Allocated memory is still 189.8 MB. Free memory was 167.5 MB in the beginning and 155.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:22:14,048 INFO L168 Benchmark]: TraceAbstraction took 5444.08 ms. Allocated memory was 189.8 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 154.5 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 381.8 MB. Max. memory is 8.0 GB. [2021-06-24 18:22:14,051 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 0.10 ms. Allocated memory is still 189.8 MB. Free memory is still 171.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.18 ms. Allocated memory is still 189.8 MB. Free memory was 170.2 MB in the beginning and 168.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.30 ms. Allocated memory is still 189.8 MB. Free memory was 168.5 MB in the beginning and 167.6 MB in the end (delta: 854.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 288.04 ms. Allocated memory is still 189.8 MB. Free memory was 167.5 MB in the beginning and 155.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5444.08 ms. Allocated memory was 189.8 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 154.5 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 381.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 3 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L22] FORK 0 fork 4 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L46] 5 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L68] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L78] 1 pendingIo := pendingIo - 1; [L79] COND TRUE 1 pendingIo == 0 [L80] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L70] 1 assume stoppingEvent; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L47] 5 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L71] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L36] 5 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 66 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 51.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.3ms, 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: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 9 procedures, 66 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 5285.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4871.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 7 SDs, 0 SdLazy, 60 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=3, InterpolantAutomatonStates: 11, 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: 11.7ms SsaConstructionTime, 38.2ms SatisfiabilityAnalysisTime, 187.7ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 106 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...