/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-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 17:53:20,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 17:53:20,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 17:53:20,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 17:53:21,275 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 17:53:21,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 17:53:21,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 17:53:21,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 17:53:21,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 17:53:21,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 17:53:21,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 17:53:21,308 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 17:53:21,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 17:53:21,308 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 17:53:21,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 17:53:21,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 17:53:21,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 17:53:21,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 17:53:21,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 17:53:21,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 17:53:21,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 17:53:21,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 17:53:21,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 17:53:21,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 17:53:21,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 17:53:21,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 17:53:21,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 17:53:21,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 17:53:21,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 17:53:21,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 17:53:21,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 17:53:21,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 17:53:21,802 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 17:53:21,804 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 17:53:21,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02-incorrect.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-incorrect.bpl' [2021-06-24 17:53:21,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 17:53:21,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 17:53:21,876 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 17:53:21,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 17:53:21,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 17:53:21,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 17:53:21,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 17:53:21,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 17:53:21,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 17:53:21,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02-incorrect.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 17:53:22,021 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 17:53:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 17:53:22,021 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 17:53:22,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 17:53:22,160 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 17:53:22,162 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22 BoogieIcfgContainer [2021-06-24 17:53:22,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 17:53:22,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 17:53:22,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 17:53:22,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 17:53:22,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/2) ... [2021-06-24 17:53:22,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e95ba4 and model type bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 05:53:22, skipping insertion in model container [2021-06-24 17:53:22,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22" (2/2) ... [2021-06-24 17:53:22,178 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02-incorrect.bpl [2021-06-24 17:53:22,182 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 17:53:22,182 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 17:53:22,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 17:53:22,183 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 17:53:22,220 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 17:53:22,251 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-24 17:53:22,265 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:22,265 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:22,265 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:22,265 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:22,265 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:22,265 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:22,265 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:22,265 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 17:53:22,272 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 71 flow [2021-06-24 17:53:22,366 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 479 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 46 states have internal predecessors, (82), 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 17:53:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 45 states have (on average 1.8222222222222222) internal successors, (82), 46 states have internal predecessors, (82), 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 17:53:22,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 17:53:22,374 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 17:53:22,376 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 17:53:22,386 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:22,387 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:22,387 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:22,387 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:22,387 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:22,387 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:22,387 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:22,387 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 17:53:22,391 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 71 flow [2021-06-24 17:53:22,412 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 479 states, 405 states have (on average 3.254320987654321) internal successors, (1318), 406 states have internal predecessors, (1318), 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 17:53:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 405 states have (on average 3.254320987654321) internal successors, (1318), 406 states have internal predecessors, (1318), 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 17:53:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-24 17:53:22,416 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:22,417 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:22,417 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash 780098874, now seen corresponding path program 1 times [2021-06-24 17:53:22,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:22,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330295175] [2021-06-24 17:53:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:22,531 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 17:53:22,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:22,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330295175] [2021-06-24 17:53:22,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330295175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:22,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:22,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 17:53:22,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788984900] [2021-06-24 17:53:22,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:53:22,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:22,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:53:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:22,549 INFO L87 Difference]: Start difference. First operand has 479 states, 405 states have (on average 3.254320987654321) internal successors, (1318), 406 states have internal predecessors, (1318), 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 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 17:53:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:22,613 INFO L93 Difference]: Finished difference Result 449 states and 1363 transitions. [2021-06-24 17:53:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:53:22,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-06-24 17:53:22,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:22,639 INFO L225 Difference]: With dead ends: 449 [2021-06-24 17:53:22,639 INFO L226 Difference]: Without dead ends: 343 [2021-06-24 17:53:22,641 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:53:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-06-24 17:53:22,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2021-06-24 17:53:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 337 states have (on average 3.026706231454006) internal successors, (1020), 338 states have internal predecessors, (1020), 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 17:53:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1020 transitions. [2021-06-24 17:53:22,694 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 1020 transitions. Word has length 10 [2021-06-24 17:53:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:22,695 INFO L482 AbstractCegarLoop]: Abstraction has 339 states and 1020 transitions. [2021-06-24 17:53:22,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 17:53:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 1020 transitions. [2021-06-24 17:53:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-24 17:53:22,697 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:22,697 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:22,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 17:53:22,697 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:22,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:22,698 INFO L82 PathProgramCache]: Analyzing trace with hash -111332616, now seen corresponding path program 1 times [2021-06-24 17:53:22,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:22,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754628299] [2021-06-24 17:53:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:53:22,769 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 17:53:22,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:53:22,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754628299] [2021-06-24 17:53:22,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754628299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:53:22,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:53:22,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 17:53:22,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546996013] [2021-06-24 17:53:22,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 17:53:22,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:53:22,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 17:53:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:22,772 INFO L87 Difference]: Start difference. First operand 339 states and 1020 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 17:53:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:53:22,816 INFO L93 Difference]: Finished difference Result 497 states and 1534 transitions. [2021-06-24 17:53:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 17:53:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-24 17:53:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 17:53:22,820 INFO L225 Difference]: With dead ends: 497 [2021-06-24 17:53:22,820 INFO L226 Difference]: Without dead ends: 497 [2021-06-24 17:53:22,820 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 17:53:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-06-24 17:53:22,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 489. [2021-06-24 17:53:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 487 states have (on average 3.108829568788501) internal successors, (1514), 488 states have internal predecessors, (1514), 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 17:53:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 1514 transitions. [2021-06-24 17:53:22,835 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 1514 transitions. Word has length 14 [2021-06-24 17:53:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 17:53:22,835 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 1514 transitions. [2021-06-24 17:53:22,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 17:53:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 1514 transitions. [2021-06-24 17:53:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-24 17:53:22,837 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:53:22,837 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:53:22,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 17:53:22,837 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:53:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:53:22,838 INFO L82 PathProgramCache]: Analyzing trace with hash 175554714, now seen corresponding path program 2 times [2021-06-24 17:53:22,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:53:22,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096100272] [2021-06-24 17:53:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:53:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 17:53:22,843 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 17:53:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 17:53:22,847 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 17:53:22,860 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 17:53:22,861 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 17:53:22,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 17:53:22,861 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was UNSAFE (2/3) [2021-06-24 17:53:22,862 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 17:53:22,874 INFO L202 PluginConnector]: Adding new model bluetooth02-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 05:53:22 BasicIcfg [2021-06-24 17:53:22,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 17:53:22,875 INFO L168 Benchmark]: Toolchain (without parser) took 1040.44 ms. Allocated memory is still 177.2 MB. Free memory was 157.2 MB in the beginning and 120.9 MB in the end (delta: 36.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:22,875 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 17:53:22,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.88 ms. Allocated memory is still 177.2 MB. Free memory was 157.1 MB in the beginning and 155.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:22,876 INFO L168 Benchmark]: Boogie Preprocessor took 9.74 ms. Allocated memory is still 177.2 MB. Free memory was 155.3 MB in the beginning and 154.5 MB in the end (delta: 836.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:22,877 INFO L168 Benchmark]: RCFGBuilder took 250.78 ms. Allocated memory is still 177.2 MB. Free memory was 154.4 MB in the beginning and 141.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:22,877 INFO L168 Benchmark]: TraceAbstraction took 710.66 ms. Allocated memory is still 177.2 MB. Free memory was 141.5 MB in the beginning and 120.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. [2021-06-24 17:53:22,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 177.2 MB. Free memory is still 158.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.88 ms. Allocated memory is still 177.2 MB. Free memory was 157.1 MB in the beginning and 155.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.74 ms. Allocated memory is still 177.2 MB. Free memory was 155.3 MB in the beginning and 154.5 MB in the end (delta: 836.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 250.78 ms. Allocated memory is still 177.2 MB. Free memory was 154.4 MB in the beginning and 141.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 710.66 ms. Allocated memory is still 177.2 MB. Free memory was 141.5 MB in the beginning and 120.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L43] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L65] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L75] 1 pendingIo := pendingIo - 1; [L76] COND TRUE 1 pendingIo == 0 [L77] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L44] 3 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L67] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L68] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L33] 3 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 42 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 110.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 7.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 100.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=479occurred 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, 42 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 474.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.5ms, AutomataDifference: 150.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 46 SDslu, 55 SDs, 0 SdLazy, 27 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 37.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=489occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 20.8ms SatisfiabilityAnalysisTime, 103.3ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...