/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/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 19:48:33,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 19:48:33,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 19:48:33,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 19:48:33,168 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 [2021-07-13 19:48:33,204 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 19:48:33,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 19:48:33,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 19:48:33,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 19:48:33,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 19:48:33,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 19:48:33,208 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 19:48:33,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 19:48:33,208 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 19:48:33,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 19:48:33,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 19:48:33,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 19:48:33,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 19:48:33,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 19:48:33,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 19:48:33,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 19:48:33,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 19:48:33,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 19:48:33,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:48:33,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 19:48:33,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 19:48:33,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 19:48:33,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 19:48:33,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 19:48:33,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 19:48:33,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 19:48:33,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 19:48:33,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 19:48:33,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 19:48:33,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 19:48:33,595 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 19:48:33,601 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 19:48:33,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl [2021-07-13 19:48:33,602 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bluetooth.wvr.bpl' [2021-07-13 19:48:33,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 19:48:33,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 19:48:33,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 19:48:33,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 19:48:33,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 19:48:33,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 19:48:33,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 19:48:33,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 19:48:33,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 19:48:33,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... [2021-07-13 19:48:33,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 19:48:33,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 19:48:33,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 19:48:33,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 19:48:33,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 19:48:33,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-13 19:48:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-13 19:48:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-13 19:48:33,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-13 19:48:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-13 19:48:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-13 19:48:33,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 19:48:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 19:48:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 19:48:33,757 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 19:48:33,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 19:48:33,946 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-13 19:48:33,948 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:48:33 BoogieIcfgContainer [2021-07-13 19:48:33,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 19:48:33,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 19:48:33,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 19:48:33,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 19:48:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 07:48:33" (1/2) ... [2021-07-13 19:48:33,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3903c42a and model type bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:48:33, skipping insertion in model container [2021-07-13 19:48:33,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:48:33" (2/2) ... [2021-07-13 19:48:33,954 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth.wvr.bpl [2021-07-13 19:48:33,958 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 19:48:33,958 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 19:48:33,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 19:48:33,959 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 19:48:33,995 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-13 19:48:34,027 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-13 19:48:34,059 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:48:34,059 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:48:34,059 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:48:34,059 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:48:34,059 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:48:34,059 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:48:34,059 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:48:34,059 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:48:34,084 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 76 flow [2021-07-13 19:48:34,116 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 72 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 71 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 71 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-13 19:48:34,125 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:34,126 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:48:34,126 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:48:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1715268891, now seen corresponding path program 1 times [2021-07-13 19:48:34,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:34,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444993623] [2021-07-13 19:48:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:34,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:34,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444993623] [2021-07-13 19:48:34,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444993623] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:34,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:34,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 19:48:34,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661277794] [2021-07-13 19:48:34,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 19:48:34,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 19:48:34,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:48:34,334 INFO L87 Difference]: Start difference. First operand has 72 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 71 states have internal predecessors, (134), 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, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:34,365 INFO L93 Difference]: Finished difference Result 93 states and 167 transitions. [2021-07-13 19:48:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 19:48:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-07-13 19:48:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:34,377 INFO L225 Difference]: With dead ends: 93 [2021-07-13 19:48:34,377 INFO L226 Difference]: Without dead ends: 90 [2021-07-13 19:48:34,380 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 19:48:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-07-13 19:48:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2021-07-13 19:48:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.813953488372093) internal successors, (156), 86 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 156 transitions. [2021-07-13 19:48:34,437 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 156 transitions. Word has length 22 [2021-07-13 19:48:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:34,437 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 156 transitions. [2021-07-13 19:48:34,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 156 transitions. [2021-07-13 19:48:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-13 19:48:34,439 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:34,439 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:48:34,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 19:48:34,439 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:48:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash 2137502828, now seen corresponding path program 1 times [2021-07-13 19:48:34,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:34,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26861285] [2021-07-13 19:48:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:34,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:34,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26861285] [2021-07-13 19:48:34,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26861285] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:34,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:34,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:48:34,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013082432] [2021-07-13 19:48:34,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:48:34,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:34,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:48:34,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:48:34,487 INFO L87 Difference]: Start difference. First operand 87 states and 156 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:34,515 INFO L93 Difference]: Finished difference Result 100 states and 175 transitions. [2021-07-13 19:48:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 19:48:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-07-13 19:48:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:34,516 INFO L225 Difference]: With dead ends: 100 [2021-07-13 19:48:34,516 INFO L226 Difference]: Without dead ends: 31 [2021-07-13 19:48:34,517 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:48:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-07-13 19:48:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-07-13 19:48:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-07-13 19:48:34,520 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 23 [2021-07-13 19:48:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:34,521 INFO L482 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-07-13 19:48:34,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-07-13 19:48:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-13 19:48:34,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:48:34,522 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:48:34,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 19:48:34,522 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 19:48:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:48:34,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1099733180, now seen corresponding path program 1 times [2021-07-13 19:48:34,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:48:34,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842807959] [2021-07-13 19:48:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:48:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:48:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:48:34,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:48:34,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842807959] [2021-07-13 19:48:34,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842807959] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:48:34,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:48:34,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-13 19:48:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221067290] [2021-07-13 19:48:34,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-13 19:48:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:48:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-13 19:48:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-13 19:48:34,553 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:48:34,565 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-07-13 19:48:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-13 19:48:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2021-07-13 19:48:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:48:34,567 INFO L225 Difference]: With dead ends: 29 [2021-07-13 19:48:34,567 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 19:48:34,567 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-13 19:48:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 19:48:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 19:48:34,568 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) [2021-07-13 19:48:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 19:48:34,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-13 19:48:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:48:34,568 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 19:48:34,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:48:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 19:48:34,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 19:48:34,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 19:48:34,571 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:48:34,573 INFO L202 PluginConnector]: Adding new model bluetooth.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:48:34 BasicIcfg [2021-07-13 19:48:34,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:48:34,574 INFO L168 Benchmark]: Toolchain (without parser) took 929.85 ms. Allocated memory is still 217.1 MB. Free memory was 197.6 MB in the beginning and 185.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:48:34,574 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 217.1 MB. Free memory is still 198.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:48:34,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 217.1 MB. Free memory was 197.5 MB in the beginning and 196.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 19:48:34,576 INFO L168 Benchmark]: Boogie Preprocessor took 15.17 ms. Allocated memory is still 217.1 MB. Free memory was 196.1 MB in the beginning and 195.2 MB in the end (delta: 897.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 19:48:34,576 INFO L168 Benchmark]: RCFGBuilder took 256.60 ms. Allocated memory is still 217.1 MB. Free memory was 195.2 MB in the beginning and 183.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-13 19:48:34,577 INFO L168 Benchmark]: TraceAbstraction took 623.33 ms. Allocated memory is still 217.1 MB. Free memory was 183.4 MB in the beginning and 185.1 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:48:34,579 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 0.12 ms. Allocated memory is still 217.1 MB. Free memory is still 198.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 217.1 MB. Free memory was 197.5 MB in the beginning and 196.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.17 ms. Allocated memory is still 217.1 MB. Free memory was 196.1 MB in the beginning and 195.2 MB in the end (delta: 897.1 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 256.60 ms. Allocated memory is still 217.1 MB. Free memory was 195.2 MB in the beginning and 183.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 623.33 ms. Allocated memory is still 217.1 MB. Free memory was 183.4 MB in the beginning and 185.1 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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 5 procedures, 45 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 512.4ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.5ms, AutomataDifference: 107.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 57.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 38 SDslu, 59 SDs, 0 SdLazy, 10 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=1, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.5ms SsaConstructionTime, 41.4ms SatisfiabilityAnalysisTime, 116.8ms InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...