/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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-22 14:48:11,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-22 14:48:11,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-22 14:48:11,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-22 14:48:11,779 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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf [2021-10-22 14:48:11,792 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-22 14:48:11,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-22 14:48:11,793 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-22 14:48:11,793 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-22 14:48:11,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-22 14:48:11,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-22 14:48:11,794 INFO L138 SettingsManager]: * Use SBE=true [2021-10-22 14:48:11,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-22 14:48:11,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-22 14:48:11,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-22 14:48:11,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-22 14:48:11,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-22 14:48:11,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-22 14:48:11,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-22 14:48:11,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-22 14:48:11,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-22 14:48:11,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-22 14:48:11,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-22 14:48:11,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 14:48:11,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-22 14:48:11,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-22 14:48:11,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-22 14:48:11,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-22 14:48:11,803 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-22 14:48:11,803 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-22 14:48:11,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-22 14:48:11,803 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-22 14:48:11,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-22 14:48:11,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-22 14:48:12,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-22 14:48:12,001 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-22 14:48:12,001 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-22 14:48:12,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert04.bpl [2021-10-22 14:48:12,002 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert04.bpl' [2021-10-22 14:48:12,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-22 14:48:12,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-22 14:48:12,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-22 14:48:12,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-22 14:48:12,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-22 14:48:12,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-22 14:48:12,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-22 14:48:12,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-22 14:48:12,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-22 14:48:12,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-22 14:48:12,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-22 14:48:12,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-22 14:48:12,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-22 14:48:12,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/1) ... [2021-10-22 14:48:12,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 14:48:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:12,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-22 14:48:12,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-22 14:48:12,112 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-10-22 14:48:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-10-22 14:48:12,113 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-10-22 14:48:12,113 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-10-22 14:48:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-10-22 14:48:12,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-10-22 14:48:12,113 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-22 14:48:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-22 14:48:12,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-22 14:48:12,114 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-22 14:48:12,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-22 14:48:12,343 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-22 14:48:12,343 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-10-22 14:48:12,344 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:48:12 BoogieIcfgContainer [2021-10-22 14:48:12,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-22 14:48:12,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-22 14:48:12,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-22 14:48:12,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-22 14:48:12,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 02:48:12" (1/2) ... [2021-10-22 14:48:12,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a82456 and model type bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:48:12, skipping insertion in model container [2021-10-22 14:48:12,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:48:12" (2/2) ... [2021-10-22 14:48:12,350 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert04.bpl [2021-10-22 14:48:12,353 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-22 14:48:12,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-22 14:48:12,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-22 14:48:12,353 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-22 14:48:12,405 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-22 14:48:12,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-22 14:48:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:12,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-10-22 14:48:12,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-10-22 14:48:12,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ServerThreadThread1of1ForFork0 ======== [2021-10-22 14:48:12,502 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-22 14:48:12,503 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-22 14:48:12,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1964553305, now seen corresponding path program 1 times [2021-10-22 14:48:12,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:12,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65369663] [2021-10-22 14:48:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:12,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:48:12,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:12,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65369663] [2021-10-22 14:48:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65369663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:48:12,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 14:48:12,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-22 14:48:12,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889387650] [2021-10-22 14:48:12,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-22 14:48:12,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-22 14:48:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-22 14:48:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:12,892 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:12,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-22 14:48:12,893 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:12,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-22 14:48:12,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1964553336, now seen corresponding path program 1 times [2021-10-22 14:48:12,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:12,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609860678] [2021-10-22 14:48:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:12,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:48:12,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:12,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609860678] [2021-10-22 14:48:12,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609860678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:48:12,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 14:48:12,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-22 14:48:12,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855933242] [2021-10-22 14:48:12,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-22 14:48:12,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-22 14:48:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-22 14:48:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:12,961 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:12,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-22 14:48:12,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:12,961 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:13,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-22 14:48:13,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:13,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1832671943, now seen corresponding path program 1 times [2021-10-22 14:48:13,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:13,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797517403] [2021-10-22 14:48:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:13,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:48:13,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:13,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797517403] [2021-10-22 14:48:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797517403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 14:48:13,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 14:48:13,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-22 14:48:13,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955689640] [2021-10-22 14:48:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-22 14:48:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-22 14:48:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-22 14:48:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:13,213 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:13,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-10-22 14:48:13,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:13,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-22 14:48:13,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:13,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1406362733, now seen corresponding path program 2 times [2021-10-22 14:48:13,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:13,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392738150] [2021-10-22 14:48:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:13,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:48:13,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392738150] [2021-10-22 14:48:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392738150] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388845718] [2021-10-22 14:48:13,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-22 14:48:13,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:13,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:13,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:13,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-22 14:48:13,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-22 14:48:13,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 14:48:13,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-22 14:48:13,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-22 14:48:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388845718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:13,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:13,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-22 14:48:13,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604460612] [2021-10-22 14:48:13,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-22 14:48:13,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:13,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-22 14:48:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-22 14:48:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:13,556 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:13,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2021-10-22 14:48:13,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:13,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:13,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-22 14:48:13,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash -434520915, now seen corresponding path program 1 times [2021-10-22 14:48:13,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:13,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186955719] [2021-10-22 14:48:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:13,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 14:48:14,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:14,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186955719] [2021-10-22 14:48:14,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186955719] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:14,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39169561] [2021-10-22 14:48:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:14,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:14,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:14,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:14,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-22 14:48:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:14,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-22 14:48:14,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 14:48:14,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39169561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:14,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:14,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-22 14:48:14,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490083684] [2021-10-22 14:48:14,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-22 14:48:14,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-22 14:48:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-22 14:48:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:14,241 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:14,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-10-22 14:48:14,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:14,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:14,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:14,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:14,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:14,520 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1161084312, now seen corresponding path program 1 times [2021-10-22 14:48:14,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:14,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374986783] [2021-10-22 14:48:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:14,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-22 14:48:14,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:14,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374986783] [2021-10-22 14:48:14,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374986783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:14,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218823461] [2021-10-22 14:48:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:14,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:14,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:14,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:14,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-22 14:48:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:14,695 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-22 14:48:14,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-22 14:48:14,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218823461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:14,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:14,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-10-22 14:48:14,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16797896] [2021-10-22 14:48:14,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-22 14:48:14,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-22 14:48:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-22 14:48:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:14,882 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:14,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:14,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:15,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:15,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:15,390 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:15,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1346286208, now seen corresponding path program 1 times [2021-10-22 14:48:15,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:15,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677558583] [2021-10-22 14:48:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:15,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-22 14:48:15,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:15,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677558583] [2021-10-22 14:48:15,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677558583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:15,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317753404] [2021-10-22 14:48:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:15,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:15,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:15,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-22 14:48:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:15,664 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-22 14:48:15,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-22 14:48:15,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317753404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:15,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:15,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-22 14:48:15,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154805226] [2021-10-22 14:48:15,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-22 14:48:15,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-22 14:48:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-22 14:48:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:15,985 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:15,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-10-22 14:48:15,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:15,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:15,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:15,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:15,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:15,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:15,994 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:16,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:16,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:16,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1603588231, now seen corresponding path program 1 times [2021-10-22 14:48:16,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:16,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305062114] [2021-10-22 14:48:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:16,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-22 14:48:16,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:16,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305062114] [2021-10-22 14:48:16,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305062114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:16,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861121514] [2021-10-22 14:48:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:16,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:16,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:16,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:16,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-22 14:48:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:16,595 WARN L261 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-22 14:48:16,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-22 14:48:16,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861121514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:16,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:16,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14 [2021-10-22 14:48:16,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955347109] [2021-10-22 14:48:16,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-22 14:48:16,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-22 14:48:16,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-22 14:48:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:16,925 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:16,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 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) [2021-10-22 14:48:16,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:16,925 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:16,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-22 14:48:17,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:17,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:17,814 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -964431659, now seen corresponding path program 1 times [2021-10-22 14:48:17,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:17,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050205122] [2021-10-22 14:48:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:17,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-22 14:48:18,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:18,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050205122] [2021-10-22 14:48:18,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050205122] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:18,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439594957] [2021-10-22 14:48:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:18,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:18,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:18,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:18,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-22 14:48:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:18,274 WARN L261 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 129 conjunts are in the unsatisfiable core [2021-10-22 14:48:18,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-10-22 14:48:18,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439594957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:18,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:18,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-22 14:48:18,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102224587] [2021-10-22 14:48:18,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-22 14:48:18,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-22 14:48:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-22 14:48:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:18,703 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:18,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2021-10-22 14:48:18,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:18,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:18,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-10-22 14:48:18,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-22 14:48:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 14:48:18,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-22 14:48:19,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:19,089 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 14:48:19,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 14:48:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash -410812510, now seen corresponding path program 1 times [2021-10-22 14:48:19,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 14:48:19,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992577286] [2021-10-22 14:48:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:19,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 14:48:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 74 proven. 56 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-10-22 14:48:19,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 14:48:19,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992577286] [2021-10-22 14:48:19,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992577286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:19,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733890500] [2021-10-22 14:48:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 14:48:19,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 14:48:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:19,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 14:48:19,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-22 14:48:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 14:48:19,660 WARN L261 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 165 conjunts are in the unsatisfiable core [2021-10-22 14:48:19,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 14:48:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-22 14:48:20,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733890500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 14:48:20,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 14:48:20,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-22 14:48:20,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655984282] [2021-10-22 14:48:20,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-22 14:48:20,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 14:48:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-22 14:48:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-10-22 14:48:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:20,167 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 14:48:20,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-22 14:48:20,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:20,167 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 14:48:20,168 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 14:48:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 14:48:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 14:48:20,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ServerThreadErr0ASSERT_VIOLATIONASSERT [2021-10-22 14:48:20,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-22 14:48:21,138 INFO L308 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-10-22 14:48:21,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-22 14:48:21,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 14:48:21,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-10-22 14:48:21,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2021-10-22 14:48:21,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-22 14:48:21,149 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-22 14:48:21,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-22 14:48:21,388 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-22 14:48:21,388 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-22 14:48:21,388 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-22 14:48:21,388 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-22 14:48:21,388 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-10-22 14:48:21,389 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2021-10-22 14:48:21,389 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-22 14:48:21,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-22 14:48:21,392 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:48:21 BasicIcfg [2021-10-22 14:48:21,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-22 14:48:21,393 INFO L168 Benchmark]: Toolchain (without parser) took 9372.09 ms. Allocated memory was 180.4 MB in the beginning and 416.3 MB in the end (delta: 235.9 MB). Free memory was 140.9 MB in the beginning and 326.9 MB in the end (delta: -186.1 MB). Peak memory consumption was 254.2 MB. Max. memory is 8.0 GB. [2021-10-22 14:48:21,393 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 180.4 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-22 14:48:21,393 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 180.4 MB. Free memory was 140.8 MB in the beginning and 138.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-22 14:48:21,394 INFO L168 Benchmark]: Boogie Preprocessor took 13.12 ms. Allocated memory is still 180.4 MB. Free memory was 138.9 MB in the beginning and 138.1 MB in the end (delta: 830.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-22 14:48:21,394 INFO L168 Benchmark]: RCFGBuilder took 282.43 ms. Allocated memory is still 180.4 MB. Free memory was 138.0 MB in the beginning and 125.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-22 14:48:21,394 INFO L168 Benchmark]: TraceAbstraction took 9046.15 ms. Allocated memory was 180.4 MB in the beginning and 416.3 MB in the end (delta: 235.9 MB). Free memory was 124.8 MB in the beginning and 326.9 MB in the end (delta: -202.1 MB). Peak memory consumption was 236.3 MB. Max. memory is 8.0 GB. [2021-10-22 14:48:21,395 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 0.09 ms. Allocated memory is still 180.4 MB. Free memory is still 141.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.32 ms. Allocated memory is still 180.4 MB. Free memory was 140.8 MB in the beginning and 138.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.12 ms. Allocated memory is still 180.4 MB. Free memory was 138.9 MB in the beginning and 138.1 MB in the end (delta: 830.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 282.43 ms. Allocated memory is still 180.4 MB. Free memory was 138.0 MB in the beginning and 125.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9046.15 ms. Allocated memory was 180.4 MB in the beginning and 416.3 MB in the end (delta: 235.9 MB). Free memory was 124.8 MB in the beginning and 326.9 MB in the end (delta: -202.1 MB). Peak memory consumption was 236.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 341974, positive: 243650, positive conditional: 243059, positive unconditional: 591, negative: 98324, negative conditional: 98268, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 304786, positive: 243650, positive conditional: 0, positive unconditional: 243650, negative: 61136, negative conditional: 0, negative unconditional: 61136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 652, positive: 593, positive conditional: 0, positive unconditional: 593, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 652, positive: 553, positive conditional: 0, positive unconditional: 553, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 99, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 286, positive: 113, positive conditional: 0, positive unconditional: 113, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 304786, positive: 243057, positive conditional: 0, positive unconditional: 243057, negative: 61077, negative conditional: 0, negative unconditional: 61077, unknown: 652, unknown conditional: 0, unknown unconditional: 652] , Statistics on independence cache: Total cache size (in pairs): 652, Positive cache size: 593, Positive conditional cache size: 0, Positive unconditional cache size: 593, Negative cache size: 59, Negative conditional cache size: 0, Negative unconditional cache size: 59, Independence queries for same thread: 37188 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 460, Number of persistent set computation: 771, Number of trivial persistent sets: 692, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 341974, positive: 243650, positive conditional: 243059, positive unconditional: 591, negative: 98324, negative conditional: 98268, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 304786, positive: 243650, positive conditional: 0, positive unconditional: 243650, negative: 61136, negative conditional: 0, negative unconditional: 61136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 652, positive: 593, positive conditional: 0, positive unconditional: 593, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 652, positive: 553, positive conditional: 0, positive unconditional: 553, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 99, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 286, positive: 113, positive conditional: 0, positive unconditional: 113, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 304786, positive: 243057, positive conditional: 0, positive unconditional: 243057, negative: 61077, negative conditional: 0, negative unconditional: 61077, unknown: 652, unknown conditional: 0, unknown unconditional: 652] , Statistics on independence cache: Total cache size (in pairs): 652, Positive cache size: 593, Positive conditional cache size: 0, Positive unconditional cache size: 593, Negative cache size: 59, Negative conditional cache size: 0, Negative unconditional cache size: 59, Independence queries for same thread: 37188 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15637, positive: 10862, positive conditional: 10322, positive unconditional: 540, negative: 4775, negative conditional: 4724, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13781, positive: 10862, positive conditional: 0, positive unconditional: 10862, negative: 2919, negative conditional: 0, negative unconditional: 2919, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 586, positive: 529, positive conditional: 0, positive unconditional: 529, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 586, positive: 498, positive conditional: 0, positive unconditional: 498, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 88, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 181, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13781, positive: 10333, positive conditional: 0, positive unconditional: 10333, negative: 2862, negative conditional: 0, negative unconditional: 2862, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 586, Positive cache size: 529, Positive conditional cache size: 0, Positive unconditional cache size: 529, Negative cache size: 57, Negative conditional cache size: 0, Negative unconditional cache size: 57, Independence queries for same thread: 1856 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 140, Number of persistent set computation: 187, Number of trivial persistent sets: 130, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 15637, positive: 10862, positive conditional: 10322, positive unconditional: 540, negative: 4775, negative conditional: 4724, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13781, positive: 10862, positive conditional: 0, positive unconditional: 10862, negative: 2919, negative conditional: 0, negative unconditional: 2919, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 586, positive: 529, positive conditional: 0, positive unconditional: 529, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 586, positive: 498, positive conditional: 0, positive unconditional: 498, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 88, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 181, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13781, positive: 10333, positive conditional: 0, positive unconditional: 10333, negative: 2862, negative conditional: 0, negative unconditional: 2862, unknown: 586, unknown conditional: 0, unknown unconditional: 586] , Statistics on independence cache: Total cache size (in pairs): 586, Positive cache size: 529, Positive conditional cache size: 0, Positive unconditional cache size: 529, Negative cache size: 57, Negative conditional cache size: 0, Negative unconditional cache size: 57, Independence queries for same thread: 1856 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 73]: 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: ServerThreadThread1of1ForFork0 with 1 thread instances CFG has 8 procedures, 47 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 8672.2ms, OverallIterations: 10, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.0ms, PartialOrderReductionTime: 2671.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.4ms SsaConstructionTime, 205.4ms SatisfiabilityAnalysisTime, 3345.1ms InterpolantComputationTime, 727 NumberOfCodeBlocks, 727 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 710 ConstructedInterpolants, 0 QuantifiedInterpolants, 4277 SizeOfPredicates, 2 NumberOfNonLiveVariables, 815 ConjunctsInSsa, 503 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 702/1331 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: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 47 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 244.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.6ms, PartialOrderReductionTime: 237.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-22 14:48:21,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:21,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-10-22 14:48:21,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...