/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 17:53:21,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 17:53:21,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 17:53:21,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 17:53:21,193 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-FA-NoLbe.epf [2021-06-24 17:53:21,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 17:53:21,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 17:53:21,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 17:53:21,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 17:53:21,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 17:53:21,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 17:53:21,299 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 17:53:21,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 17:53:21,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 17:53:21,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 17:53:21,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 17:53:21,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 17:53:21,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 17:53:21,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 17:53:21,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 17:53:21,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 17:53:21,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 17:53:21,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 17:53:21,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 17:53:21,803 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 17:53:21,804 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 17:53:21,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl [2021-06-24 17:53:21,805 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl' [2021-06-24 17:53:21,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 17:53:21,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 17:53:21,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 17:53:21,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 17:53:21,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 17:53:21,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 17:53:21,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 17:53:21,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 17:53:21,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 17:53:21,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 17:53:21,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 17:53:21,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (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 17:53:22,020 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 17:53:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 17:53:22,021 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 17:53:22,021 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 17:53:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 17:53:22,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 17:53:22,021 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 17:53:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 17:53:22,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 17:53:22,022 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 17:53:22,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 17:53:22,249 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 17:53:22,249 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 17:53:22,251 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22 BoogieIcfgContainer [2021-06-24 17:53:22,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 17:53:22,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 17:53:22,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 17:53:22,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 17:53:22,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/2) ... [2021-06-24 17:53:22,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384fcaf2 and model type bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 05:53:22, skipping insertion in model container [2021-06-24 17:53:22,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22" (2/2) ... [2021-06-24 17:53:22,257 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02.bpl [2021-06-24 17:53:22,262 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 17:53:22,262 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 17:53:22,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 17:53:22,263 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 17:53:22,288 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 17:53:22,308 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-24 17:53:22,348 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:22,348 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:22,348 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:22,348 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:22,348 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:22,349 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:22,349 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:22,349 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 17:53:22,357 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 26 transitions, 67 flow [2021-06-24 17:53:22,484 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 341 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 17:53:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 17:53:22,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 17:53:22,492 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 17:53:22,494 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 17:53:22,502 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:22,502 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:22,502 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:22,502 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:22,503 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:22,503 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:22,503 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:22,503 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 17:53:22,504 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 26 transitions, 67 flow [2021-06-24 17:53:22,559 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 341 states, 279 states have (on average 3.229390681003584) internal successors, (901), 280 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 17:53:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 279 states have (on average 3.229390681003584) internal successors, (901), 280 states have internal predecessors, (901), 0 states have call successors, (0), 0 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 17:53:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-24 17:53:22,562 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:22,563 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:22,563 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash 218022983, now seen corresponding path program 1 times [2021-06-24 17:53:22,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:22,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888336725] [2021-06-24 17:53:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:22,714 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 17:53:22,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:22,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888336725] [2021-06-24 17:53:22,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888336725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:22,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:22,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 17:53:22,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009825476] [2021-06-24 17:53:22,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:53:22,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:22,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:53:22,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:22,736 INFO L87 Difference]: Start difference. First operand has 341 states, 279 states have (on average 3.229390681003584) internal successors, (901), 280 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 17:53:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:22,809 INFO L93 Difference]: Finished difference Result 297 states and 885 transitions. [2021-06-24 17:53:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:53:22,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-06-24 17:53:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:22,829 INFO L225 Difference]: With dead ends: 297 [2021-06-24 17:53:22,830 INFO L226 Difference]: Without dead ends: 229 [2021-06-24 17:53:22,831 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-06-24 17:53:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2021-06-24 17:53:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.9551569506726456) internal successors, (659), 224 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 17:53:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 659 transitions. [2021-06-24 17:53:22,881 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 659 transitions. Word has length 9 [2021-06-24 17:53:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:22,882 INFO L482 AbstractCegarLoop]: Abstraction has 225 states and 659 transitions. [2021-06-24 17:53:22,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 17:53:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 659 transitions. [2021-06-24 17:53:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 17:53:22,884 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:22,884 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:22,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 17:53:22,885 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash 746144645, now seen corresponding path program 1 times [2021-06-24 17:53:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:22,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456985152] [2021-06-24 17:53:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:22,944 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 17:53:22,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:22,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456985152] [2021-06-24 17:53:22,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456985152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:22,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:22,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 17:53:22,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395216537] [2021-06-24 17:53:22,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 17:53:22,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:22,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 17:53:22,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:22,948 INFO L87 Difference]: Start difference. First operand 225 states and 659 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:53:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:22,998 INFO L93 Difference]: Finished difference Result 327 states and 985 transitions. [2021-06-24 17:53:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 17:53:22,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-24 17:53:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,002 INFO L225 Difference]: With dead ends: 327 [2021-06-24 17:53:23,002 INFO L226 Difference]: Without dead ends: 327 [2021-06-24 17:53:23,003 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-24 17:53:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2021-06-24 17:53:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 317 states have (on average 3.0441640378548898) internal successors, (965), 318 states have internal predecessors, (965), 0 states have call successors, (0), 0 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 17:53:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 965 transitions. [2021-06-24 17:53:23,025 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 965 transitions. Word has length 13 [2021-06-24 17:53:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,025 INFO L482 AbstractCegarLoop]: Abstraction has 319 states and 965 transitions. [2021-06-24 17:53:23,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:53:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 965 transitions. [2021-06-24 17:53:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 17:53:23,027 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,027 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 17:53:23,028 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1004432615, now seen corresponding path program 2 times [2021-06-24 17:53:23,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109773573] [2021-06-24 17:53:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,046 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 17:53:23,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109773573] [2021-06-24 17:53:23,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109773573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 17:53:23,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413540654] [2021-06-24 17:53:23,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:53:23,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:53:23,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,050 INFO L87 Difference]: Start difference. First operand 319 states and 965 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:53:23,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,063 INFO L93 Difference]: Finished difference Result 297 states and 795 transitions. [2021-06-24 17:53:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:53:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-24 17:53:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,069 INFO L225 Difference]: With dead ends: 297 [2021-06-24 17:53:23,069 INFO L226 Difference]: Without dead ends: 141 [2021-06-24 17:53:23,070 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-06-24 17:53:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2021-06-24 17:53:23,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 2.4263565891472867) internal successors, (313), 130 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 17:53:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 313 transitions. [2021-06-24 17:53:23,077 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 313 transitions. Word has length 13 [2021-06-24 17:53:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,077 INFO L482 AbstractCegarLoop]: Abstraction has 131 states and 313 transitions. [2021-06-24 17:53:23,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 17:53:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 313 transitions. [2021-06-24 17:53:23,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 17:53:23,078 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,078 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 17:53:23,079 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash 807230196, now seen corresponding path program 1 times [2021-06-24 17:53:23,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301307957] [2021-06-24 17:53:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,181 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 17:53:23,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301307957] [2021-06-24 17:53:23,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301307957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 17:53:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215629939] [2021-06-24 17:53:23,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 17:53:23,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 17:53:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 17:53:23,185 INFO L87 Difference]: Start difference. First operand 131 states and 313 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:53:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,230 INFO L93 Difference]: Finished difference Result 83 states and 199 transitions. [2021-06-24 17:53:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 17:53:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-24 17:53:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,231 INFO L225 Difference]: With dead ends: 83 [2021-06-24 17:53:23,231 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 17:53:23,232 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 17:53:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 17:53:23,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 17:53:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 17:53:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 17:53:23,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 17:53:23,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,232 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 17:53:23,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:53:23,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 17:53:23,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 17:53:23,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 17:53:23,233 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was SAFE (2/3) [2021-06-24 17:53:23,234 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 17:53:23,235 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:23,235 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:23,235 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:23,236 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:23,236 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:23,236 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:23,236 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:23,236 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 17:53:23,241 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 26 transitions, 67 flow [2021-06-24 17:53:23,255 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 341 states, 273 states have (on average 3.238095238095238) internal successors, (884), 274 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 17:53:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 273 states have (on average 3.238095238095238) internal successors, (884), 274 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 17:53:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-24 17:53:23,256 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,256 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,257 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1808147887, now seen corresponding path program 1 times [2021-06-24 17:53:23,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036663887] [2021-06-24 17:53:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,293 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 17:53:23,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036663887] [2021-06-24 17:53:23,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036663887] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 17:53:23,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393614656] [2021-06-24 17:53:23,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:53:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:53:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,296 INFO L87 Difference]: Start difference. First operand has 341 states, 273 states have (on average 3.238095238095238) internal successors, (884), 274 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 17:53:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,306 INFO L93 Difference]: Finished difference Result 289 states and 863 transitions. [2021-06-24 17:53:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:53:23,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-06-24 17:53:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,308 INFO L225 Difference]: With dead ends: 289 [2021-06-24 17:53:23,308 INFO L226 Difference]: Without dead ends: 223 [2021-06-24 17:53:23,308 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-06-24 17:53:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2021-06-24 17:53:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 2.9585253456221197) internal successors, (642), 218 states have internal predecessors, (642), 0 states have call successors, (0), 0 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 17:53:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 642 transitions. [2021-06-24 17:53:23,319 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 642 transitions. Word has length 8 [2021-06-24 17:53:23,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,319 INFO L482 AbstractCegarLoop]: Abstraction has 219 states and 642 transitions. [2021-06-24 17:53:23,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 17:53:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 642 transitions. [2021-06-24 17:53:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 17:53:23,321 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,321 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 17:53:23,321 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 739982189, now seen corresponding path program 1 times [2021-06-24 17:53:23,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555604978] [2021-06-24 17:53:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,372 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 17:53:23,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555604978] [2021-06-24 17:53:23,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555604978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 17:53:23,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363722374] [2021-06-24 17:53:23,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 17:53:23,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 17:53:23,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:23,374 INFO L87 Difference]: Start difference. First operand 219 states and 642 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 17:53:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,434 INFO L93 Difference]: Finished difference Result 321 states and 968 transitions. [2021-06-24 17:53:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 17:53:23,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-24 17:53:23,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,438 INFO L225 Difference]: With dead ends: 321 [2021-06-24 17:53:23,438 INFO L226 Difference]: Without dead ends: 321 [2021-06-24 17:53:23,438 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-06-24 17:53:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 313. [2021-06-24 17:53:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 311 states have (on average 3.0482315112540195) internal successors, (948), 312 states have internal predecessors, (948), 0 states have call successors, (0), 0 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 17:53:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 948 transitions. [2021-06-24 17:53:23,463 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 948 transitions. Word has length 12 [2021-06-24 17:53:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,464 INFO L482 AbstractCegarLoop]: Abstraction has 313 states and 948 transitions. [2021-06-24 17:53:23,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 17:53:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 948 transitions. [2021-06-24 17:53:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 17:53:23,465 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,465 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 17:53:23,465 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,466 INFO L82 PathProgramCache]: Analyzing trace with hash 855273359, now seen corresponding path program 2 times [2021-06-24 17:53:23,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098006272] [2021-06-24 17:53:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,496 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 17:53:23,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098006272] [2021-06-24 17:53:23,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098006272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 17:53:23,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479830665] [2021-06-24 17:53:23,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:53:23,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:53:23,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,500 INFO L87 Difference]: Start difference. First operand 313 states and 948 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 17:53:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,509 INFO L93 Difference]: Finished difference Result 291 states and 778 transitions. [2021-06-24 17:53:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:53:23,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-06-24 17:53:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,511 INFO L225 Difference]: With dead ends: 291 [2021-06-24 17:53:23,511 INFO L226 Difference]: Without dead ends: 141 [2021-06-24 17:53:23,511 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:23,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-06-24 17:53:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2021-06-24 17:53:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 2.4263565891472867) internal successors, (313), 130 states have internal predecessors, (313), 0 states have call successors, (0), 0 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 17:53:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 313 transitions. [2021-06-24 17:53:23,515 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 313 transitions. Word has length 12 [2021-06-24 17:53:23,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,516 INFO L482 AbstractCegarLoop]: Abstraction has 131 states and 313 transitions. [2021-06-24 17:53:23,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 17:53:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 313 transitions. [2021-06-24 17:53:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 17:53:23,520 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:23,520 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:23,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 17:53:23,521 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:23,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:23,521 INFO L82 PathProgramCache]: Analyzing trace with hash -2044386625, now seen corresponding path program 1 times [2021-06-24 17:53:23,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:23,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839383974] [2021-06-24 17:53:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:23,587 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 17:53:23,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:23,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839383974] [2021-06-24 17:53:23,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839383974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:23,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:23,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 17:53:23,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051246250] [2021-06-24 17:53:23,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 17:53:23,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:23,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 17:53:23,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 17:53:23,590 INFO L87 Difference]: Start difference. First operand 131 states and 313 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:53:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:23,625 INFO L93 Difference]: Finished difference Result 83 states and 199 transitions. [2021-06-24 17:53:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 17:53:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-24 17:53:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:23,626 INFO L225 Difference]: With dead ends: 83 [2021-06-24 17:53:23,626 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 17:53:23,627 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 17:53:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 17:53:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 17:53:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 17:53:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 17:53:23,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 17:53:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:23,629 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 17:53:23,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 17:53:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 17:53:23,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 17:53:23,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 17:53:23,630 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was SAFE (3/3) [2021-06-24 17:53:23,631 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 17:53:23,636 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 05:53:23 BasicIcfg [2021-06-24 17:53:23,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 17:53:23,637 INFO L168 Benchmark]: Toolchain (without parser) took 1786.21 ms. Allocated memory is still 181.4 MB. Free memory was 161.1 MB in the beginning and 130.1 MB in the end (delta: 31.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:23,637 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 181.4 MB. Free memory is still 162.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 17:53:23,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.32 ms. Allocated memory is still 181.4 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:23,641 INFO L168 Benchmark]: Boogie Preprocessor took 13.05 ms. Allocated memory is still 181.4 MB. Free memory was 159.2 MB in the beginning and 158.4 MB in the end (delta: 874.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:23,642 INFO L168 Benchmark]: RCFGBuilder took 331.05 ms. Allocated memory is still 181.4 MB. Free memory was 158.4 MB in the beginning and 145.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:23,643 INFO L168 Benchmark]: TraceAbstraction took 1383.69 ms. Allocated memory is still 181.4 MB. Free memory was 145.1 MB in the beginning and 130.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:23,646 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 0.15 ms. Allocated memory is still 181.4 MB. Free memory is still 162.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.32 ms. Allocated memory is still 181.4 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.05 ms. Allocated memory is still 181.4 MB. Free memory was 159.2 MB in the beginning and 158.4 MB in the end (delta: 874.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 331.05 ms. Allocated memory is still 181.4 MB. Free memory was 158.4 MB in the beginning and 145.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1383.69 ms. Allocated memory is still 181.4 MB. Free memory was 145.1 MB in the beginning and 130.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 146.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 7.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 135.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred 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: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 731.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 7.6ms, AutomataDifference: 233.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 83 SDslu, 84 SDs, 0 SdLazy, 54 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 72.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 34.7ms SatisfiabilityAnalysisTime, 186.5ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 394.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 128.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 84 SDslu, 74 SDs, 0 SdLazy, 49 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 55.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5ms SsaConstructionTime, 21.4ms SatisfiabilityAnalysisTime, 138.1ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...