/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-correct03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:55:55,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:55:55,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:55:55,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:55:55,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:55:55,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:55:55,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:55:55,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:55:55,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:55:55,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:55:55,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:55:55,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:55:55,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:55:55,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:55:55,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:55:55,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:55:55,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:55:55,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:55:55,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:55:55,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:55:55,311 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 09:55:55,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:55:55,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:55:55,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:55:55,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:55:55,364 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:55:55,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:55:55,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:55:55,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:55:55,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:55:55,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:55:55,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:55:55,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:55:55,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:55:55,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:55:55,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:55:55,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-07-01 09:55:55,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:55:55,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:55:55,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:55:55,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:55:55,647 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:55:55,649 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:55:55,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl [2021-07-01 09:55:55,650 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl' [2021-07-01 09:55:55,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:55:55,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:55:55,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:55:55,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:55:55,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:55:55,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:55:55,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:55:55,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:55:55,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:55:55,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/1) ... [2021-07-01 09:55:55,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:55:55,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:55:55,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:55:55,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:55:55,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (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 09:55:55,762 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:55:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:55:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:55:55,762 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:55:55,762 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:55:55,762 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:55:55,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:55:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:55:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:55:55,763 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:55:55,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:55:55,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:55:55,764 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 09:55:56,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:55:56,017 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:55:56,018 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:55:56,018 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:55:56,019 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:55:56 BoogieIcfgContainer [2021-07-01 09:55:56,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:55:56,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:55:56,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:55:56,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:55:56,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:55:55" (1/2) ... [2021-07-01 09:55:56,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba96ffe and model type bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:55:56, skipping insertion in model container [2021-07-01 09:55:56,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:55:56" (2/2) ... [2021-07-01 09:55:56,024 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct03.bpl [2021-07-01 09:55:56,028 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:55:56,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:55:56,029 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:55:56,054 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:55:56,077 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-01 09:55:56,106 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:55:56,106 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:55:56,106 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:55:56,107 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:55:56,107 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:55:56,107 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:55:56,107 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:55:56,107 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:55:56,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 78 flow [2021-07-01 09:55:56,144 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-07-01 09:55:56,144 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2021-07-01 09:55:56,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 29 transitions, 78 flow [2021-07-01 09:55:56,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-07-01 09:55:56,150 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-07-01 09:55:56,150 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,150 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:55:56,152 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:55:56,162 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:55:56,162 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:55:56,162 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:55:56,162 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:55:56,162 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:55:56,162 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:55:56,162 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:55:56,162 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:55:56,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 78 flow [2021-07-01 09:55:56,174 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-07-01 09:55:56,174 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 44 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2021-07-01 09:55:56,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 29 transitions, 78 flow [2021-07-01 09:55:56,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 62 flow [2021-07-01 09:55:56,185 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-07-01 09:55:56,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,185 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,186 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,186 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1868001698, now seen corresponding path program 1 times [2021-07-01 09:55:56,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752020989] [2021-07-01 09:55:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:56,296 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 09:55:56,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752020989] [2021-07-01 09:55:56,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752020989] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:55:56,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861937394] [2021-07-01 09:55:56,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:55:56,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:55:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:55:56,315 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 29 [2021-07-01 09:55:56,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 09:55:56,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 29 [2021-07-01 09:55:56,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,332 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-07-01 09:55:56,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:55:56,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 32 events. 4/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 40. Up to 4 conditions per place. [2021-07-01 09:55:56,334 INFO L132 encePairwiseOnDemand]: 25/29 looper letters, 2 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2021-07-01 09:55:56,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 74 flow [2021-07-01 09:55:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:55:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:55:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2021-07-01 09:55:56,341 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9310344827586207 [2021-07-01 09:55:56,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2021-07-01 09:55:56,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2021-07-01 09:55:56,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2021-07-01 09:55:56,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 09:55:56,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 09:55:56,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 09:55:56,349 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 62 flow. Second operand 3 states and 81 transitions. [2021-07-01 09:55:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 74 flow [2021-07-01 09:55:56,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-07-01 09:55:56,353 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 76 flow [2021-07-01 09:55:56,354 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-07-01 09:55:56,354 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2021-07-01 09:55:56,355 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 76 flow [2021-07-01 09:55:56,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 09:55:56,355 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,355 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:55:56,355 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1060968860, now seen corresponding path program 1 times [2021-07-01 09:55:56,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499734878] [2021-07-01 09:55:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,378 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 09:55:56,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499734878] [2021-07-01 09:55:56,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499734878] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:55:56,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345876502] [2021-07-01 09:55:56,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:55:56,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:55:56,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:55:56,381 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 29 [2021-07-01 09:55:56,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 09:55:56,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 29 [2021-07-01 09:55:56,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,402 INFO L129 PetriNetUnfolder]: 12/98 cut-off events. [2021-07-01 09:55:56,402 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-07-01 09:55:56,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 98 events. 12/98 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 420 event pairs, 5 based on Foata normal form. 15/106 useless extension candidates. Maximal degree in co-relation 158. Up to 17 conditions per place. [2021-07-01 09:55:56,403 INFO L132 encePairwiseOnDemand]: 25/29 looper letters, 4 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-07-01 09:55:56,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 86 flow [2021-07-01 09:55:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:55:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:55:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2021-07-01 09:55:56,405 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9195402298850575 [2021-07-01 09:55:56,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2021-07-01 09:55:56,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2021-07-01 09:55:56,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2021-07-01 09:55:56,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 09:55:56,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 09:55:56,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 09:55:56,406 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 76 flow. Second operand 3 states and 80 transitions. [2021-07-01 09:55:56,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 86 flow [2021-07-01 09:55:56,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-07-01 09:55:56,408 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 79 flow [2021-07-01 09:55:56,408 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-07-01 09:55:56,409 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2021-07-01 09:55:56,409 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 79 flow [2021-07-01 09:55:56,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 09:55:56,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,409 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:55:56,409 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,410 INFO L82 PathProgramCache]: Analyzing trace with hash -745768932, now seen corresponding path program 2 times [2021-07-01 09:55:56,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298933557] [2021-07-01 09:55:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:56,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:56,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,454 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 09:55:56,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298933557] [2021-07-01 09:55:56,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298933557] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:55:56,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775169429] [2021-07-01 09:55:56,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:55:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:55:56,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:55:56,456 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 29 [2021-07-01 09:55:56,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 09:55:56,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 29 [2021-07-01 09:55:56,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,522 INFO L129 PetriNetUnfolder]: 117/293 cut-off events. [2021-07-01 09:55:56,522 INFO L130 PetriNetUnfolder]: For 33/46 co-relation queries the response was YES. [2021-07-01 09:55:56,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 293 events. 117/293 cut-off events. For 33/46 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1282 event pairs, 5 based on Foata normal form. 10/290 useless extension candidates. Maximal degree in co-relation 581. Up to 140 conditions per place. [2021-07-01 09:55:56,525 INFO L132 encePairwiseOnDemand]: 19/29 looper letters, 11 selfloop transitions, 13 changer transitions 0/40 dead transitions. [2021-07-01 09:55:56,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 167 flow [2021-07-01 09:55:56,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:55:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-07-01 09:55:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2021-07-01 09:55:56,526 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8275862068965517 [2021-07-01 09:55:56,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 120 transitions. [2021-07-01 09:55:56,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 120 transitions. [2021-07-01 09:55:56,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 120 transitions. [2021-07-01 09:55:56,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 09:55:56,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 09:55:56,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 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 09:55:56,529 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 79 flow. Second operand 5 states and 120 transitions. [2021-07-01 09:55:56,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 167 flow [2021-07-01 09:55:56,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:56,534 INFO L241 Difference]: Finished difference. Result has 40 places, 37 transitions, 160 flow [2021-07-01 09:55:56,534 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2021-07-01 09:55:56,534 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2021-07-01 09:55:56,534 INFO L482 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 160 flow [2021-07-01 09:55:56,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 09:55:56,535 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,535 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:55:56,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:55:56,535 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1716750191, now seen corresponding path program 1 times [2021-07-01 09:55:56,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801862909] [2021-07-01 09:55:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:56,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:56,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,620 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 09:55:56,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801862909] [2021-07-01 09:55:56,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801862909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 09:55:56,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843708411] [2021-07-01 09:55:56,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:55:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:55:56,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:55:56,622 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 29 [2021-07-01 09:55:56,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 09:55:56,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 29 [2021-07-01 09:55:56,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,754 INFO L129 PetriNetUnfolder]: 162/363 cut-off events. [2021-07-01 09:55:56,754 INFO L130 PetriNetUnfolder]: For 131/159 co-relation queries the response was YES. [2021-07-01 09:55:56,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 363 events. 162/363 cut-off events. For 131/159 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1461 event pairs, 5 based on Foata normal form. 21/376 useless extension candidates. Maximal degree in co-relation 1042. Up to 152 conditions per place. [2021-07-01 09:55:56,758 INFO L132 encePairwiseOnDemand]: 19/29 looper letters, 11 selfloop transitions, 37 changer transitions 5/69 dead transitions. [2021-07-01 09:55:56,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 429 flow [2021-07-01 09:55:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:55:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-07-01 09:55:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2021-07-01 09:55:56,765 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8448275862068966 [2021-07-01 09:55:56,768 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2021-07-01 09:55:56,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2021-07-01 09:55:56,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2021-07-01 09:55:56,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 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) [2021-07-01 09:55:56,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 09:55:56,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 09:55:56,773 INFO L185 Difference]: Start difference. First operand has 40 places, 37 transitions, 160 flow. Second operand 6 states and 147 transitions. [2021-07-01 09:55:56,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 429 flow [2021-07-01 09:55:56,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 69 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-07-01 09:55:56,779 INFO L241 Difference]: Finished difference. Result has 46 places, 61 transitions, 429 flow [2021-07-01 09:55:56,779 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=46, PETRI_TRANSITIONS=61} [2021-07-01 09:55:56,779 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2021-07-01 09:55:56,779 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 61 transitions, 429 flow [2021-07-01 09:55:56,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 09:55:56,780 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:55:56,780 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 09:55:56,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:55:56,780 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:55:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:55:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash 894737698, now seen corresponding path program 1 times [2021-07-01 09:55:56,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:55:56,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874077720] [2021-07-01 09:55:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:55:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:55:56,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 09:55:56,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 09:55:56,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:55:56,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:55:56,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:55:56,846 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 09:55:56,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:55:56,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874077720] [2021-07-01 09:55:56,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874077720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:55:56,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:55:56,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-01 09:55:56,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803173179] [2021-07-01 09:55:56,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:55:56,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:55:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:55:56,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:55:56,851 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 29 [2021-07-01 09:55:56,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 61 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 09:55:56,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:55:56,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 29 [2021-07-01 09:55:56,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:55:56,929 INFO L129 PetriNetUnfolder]: 144/287 cut-off events. [2021-07-01 09:55:56,930 INFO L130 PetriNetUnfolder]: For 391/434 co-relation queries the response was YES. [2021-07-01 09:55:56,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 287 events. 144/287 cut-off events. For 391/434 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1074 event pairs, 0 based on Foata normal form. 23/309 useless extension candidates. Maximal degree in co-relation 1234. Up to 128 conditions per place. [2021-07-01 09:55:56,932 INFO L132 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 106/106 dead transitions. [2021-07-01 09:55:56,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 106 transitions, 980 flow [2021-07-01 09:55:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:55:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-07-01 09:55:56,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2021-07-01 09:55:56,935 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8078817733990148 [2021-07-01 09:55:56,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 164 transitions. [2021-07-01 09:55:56,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 164 transitions. [2021-07-01 09:55:56,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:55:56,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 164 transitions. [2021-07-01 09:55:56,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 0 states have call successors, (0), 0 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 09:55:56,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 09:55:56,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 09:55:56,937 INFO L185 Difference]: Start difference. First operand has 46 places, 61 transitions, 429 flow. Second operand 7 states and 164 transitions. [2021-07-01 09:55:56,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 106 transitions, 980 flow [2021-07-01 09:55:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 106 transitions, 940 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-07-01 09:55:56,943 INFO L241 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2021-07-01 09:55:56,943 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2021-07-01 09:55:56,943 INFO L335 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2021-07-01 09:55:56,943 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2021-07-01 09:55:56,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 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 09:55:56,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 09:55:56,944 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-01 09:55:56,944 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:55:56,947 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:55:56 BasicIcfg [2021-07-01 09:55:56,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:55:56,948 INFO L168 Benchmark]: Toolchain (without parser) took 1279.21 ms. Allocated memory is still 217.1 MB. Free memory was 197.2 MB in the beginning and 94.6 MB in the end (delta: 102.5 MB). Peak memory consumption was 104.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:55:56,949 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 217.1 MB. Free memory is still 198.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:55:56,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 217.1 MB. Free memory was 197.1 MB in the beginning and 195.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-07-01 09:55:56,950 INFO L168 Benchmark]: Boogie Preprocessor took 12.29 ms. Allocated memory is still 217.1 MB. Free memory was 195.3 MB in the beginning and 194.3 MB in the end (delta: 963.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:55:56,950 INFO L168 Benchmark]: RCFGBuilder took 307.96 ms. Allocated memory is still 217.1 MB. Free memory was 194.3 MB in the beginning and 179.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:55:56,952 INFO L168 Benchmark]: TraceAbstraction took 926.99 ms. Allocated memory is still 217.1 MB. Free memory was 178.9 MB in the beginning and 94.6 MB in the end (delta: 84.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 8.0 GB. [2021-07-01 09:55:56,956 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 217.1 MB. Free memory is still 198.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 217.1 MB. Free memory was 197.1 MB in the beginning and 195.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.29 ms. Allocated memory is still 217.1 MB. Free memory was 195.3 MB in the beginning and 194.3 MB in the end (delta: 963.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 307.96 ms. Allocated memory is still 217.1 MB. Free memory was 194.3 MB in the beginning and 179.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 926.99 ms. Allocated memory is still 217.1 MB. Free memory was 178.9 MB in the beginning and 94.6 MB in the end (delta: 84.3 MB). Peak memory consumption was 85.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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 8 procedures, 45 locations, 6 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: 47.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.6ms, 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 8 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 787.6ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 404.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 4 SDslu, 12 SDs, 0 SdLazy, 133 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 82.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=4, InterpolantAutomatonStates: 24, 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: 6.5ms SsaConstructionTime, 28.5ms SatisfiabilityAnalysisTime, 220.5ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...