/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-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-22 22:58:59,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-22 22:58:59,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-22 22:58:59,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-22 22:58:59,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-22 22:58:59,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-22 22:58:59,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-22 22:58:59,789 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-Random7777.epf [2021-10-22 22:58:59,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-22 22:58:59,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-22 22:58:59,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-22 22:58:59,802 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-22 22:58:59,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-22 22:58:59,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-22 22:58:59,803 INFO L138 SettingsManager]: * Use SBE=true [2021-10-22 22:58:59,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-22 22:58:59,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-22 22:58:59,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-22 22:58:59,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 22:58:59,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-22 22:58:59,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-22 22:58:59,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-22 22:58:59,807 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-22 22:58:59,807 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-22 22:58:59,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-22 22:58:59,807 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 [2021-10-22 22:58:59,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-22 22:58:59,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-22 22:59:00,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-22 22:59:00,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-22 22:59:00,003 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-22 22:59:00,006 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-22 22:59:00,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert07.bpl [2021-10-22 22:59:00,006 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert07.bpl' [2021-10-22 22:59:00,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-22 22:59:00,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-22 22:59:00,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-22 22:59:00,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-22 22:59:00,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-22 22:59:00,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-22 22:59:00,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-22 22:59:00,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-22 22:59:00,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-22 22:59:00,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-22 22:59:00,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-22 22:59:00,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-22 22:59:00,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-22 22:59:00,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ... [2021-10-22 22:59:00,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-22 22:59:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:00,104 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 22:59:00,115 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 22:59:00,137 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-10-22 22:59:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-10-22 22:59:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-10-22 22:59:00,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-10-22 22:59:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-10-22 22:59:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-10-22 22:59:00,138 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-22 22:59:00,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-22 22:59:00,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-22 22:59:00,139 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 22:59:00,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-22 22:59:00,263 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-22 22:59:00,264 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-10-22 22:59:00,265 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:59:00 BoogieIcfgContainer [2021-10-22 22:59:00,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-22 22:59:00,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-22 22:59:00,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-22 22:59:00,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-22 22:59:00,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/2) ... [2021-10-22 22:59:00,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ede35c and model type bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:59:00, skipping insertion in model container [2021-10-22 22:59:00,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:59:00" (2/2) ... [2021-10-22 22:59:00,282 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert07.bpl [2021-10-22 22:59:00,286 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-22 22:59:00,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-22 22:59:00,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-22 22:59:00,286 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-22 22:59:00,332 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-22 22:59:00,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-22 22:59:00,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:00,373 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 22:59:00,377 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 22:59:00,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ServerThreadThread1of1ForFork0 ======== [2021-10-22 22:59:00,404 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 22:59:00,404 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-22 22:59:00,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash 147755572, now seen corresponding path program 1 times [2021-10-22 22:59:00,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:00,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483865728] [2021-10-22 22:59:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:00,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:00,923 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 22:59:00,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:00,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483865728] [2021-10-22 22:59:00,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483865728] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 22:59:00,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 22:59:00,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-22 22:59:00,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240079028] [2021-10-22 22:59:00,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-22 22:59:00,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-22 22:59:00,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-22 22:59:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:00,965 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:00,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 22:59:00,966 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:01,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-22 22:59:01,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:01,013 INFO L82 PathProgramCache]: Analyzing trace with hash 147725781, now seen corresponding path program 1 times [2021-10-22 22:59:01,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:01,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022489527] [2021-10-22 22:59:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:01,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:01,061 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 22:59:01,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:01,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022489527] [2021-10-22 22:59:01,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022489527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 22:59:01,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 22:59:01,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-22 22:59:01,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772856483] [2021-10-22 22:59:01,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-22 22:59:01,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-22 22:59:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-22 22:59:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:01,064 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:01,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 22:59:01,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:01,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:01,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-22 22:59:01,610 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2024197783, now seen corresponding path program 1 times [2021-10-22 22:59:01,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:01,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543638212] [2021-10-22 22:59:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:01,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-22 22:59:01,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:01,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543638212] [2021-10-22 22:59:01,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543638212] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-22 22:59:01,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-22 22:59:01,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-22 22:59:01,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126539801] [2021-10-22 22:59:01,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-22 22:59:01,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:01,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-22 22:59:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-22 22:59:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:01,704 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:01,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-22 22:59:01,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:01,704 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:01,705 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:01,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-22 22:59:01,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:01,753 INFO L82 PathProgramCache]: Analyzing trace with hash -651953708, now seen corresponding path program 1 times [2021-10-22 22:59:01,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:01,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017123611] [2021-10-22 22:59:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:01,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 22:59:01,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:01,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017123611] [2021-10-22 22:59:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017123611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:01,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127786530] [2021-10-22 22:59:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:01,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:01,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:01,817 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 22:59:01,818 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 22:59:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:01,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-22 22:59:01,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-22 22:59:02,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127786530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:02,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:02,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-22 22:59:02,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219007403] [2021-10-22 22:59:02,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-22 22:59:02,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-22 22:59:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-22 22:59:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:02,072 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:02,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 8 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 22:59:02,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:02,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:02,193 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 22:59:02,387 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 22:59:02,388 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:02,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1272361913, now seen corresponding path program 1 times [2021-10-22 22:59:02,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:02,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341712718] [2021-10-22 22:59:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:02,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-22 22:59:02,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:02,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341712718] [2021-10-22 22:59:02,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341712718] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:02,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061763859] [2021-10-22 22:59:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:02,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:02,494 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 22:59:02,495 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 22:59:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:02,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-22 22:59:02,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-22 22:59:02,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061763859] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:02,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:02,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-22 22:59:02,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023901318] [2021-10-22 22:59:02,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-22 22:59:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-22 22:59:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-22 22:59:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:02,765 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:02,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 22:59:02,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:02,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:02,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:02,846 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 22:59:03,043 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 22:59:03,044 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1742434102, now seen corresponding path program 1 times [2021-10-22 22:59:03,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:03,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821803445] [2021-10-22 22:59:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:03,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-22 22:59:03,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:03,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821803445] [2021-10-22 22:59:03,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821803445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:03,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233739535] [2021-10-22 22:59:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:03,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:03,153 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 22:59:03,154 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 22:59:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:03,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-22 22:59:03,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-22 22:59:03,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233739535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:03,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:03,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-22 22:59:03,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561413060] [2021-10-22 22:59:03,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-22 22:59:03,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-22 22:59:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-22 22:59:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:03,453 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:03,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:03,453 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:03,670 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 22:59:03,859 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 22:59:03,860 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash -916756059, now seen corresponding path program 2 times [2021-10-22 22:59:03,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:03,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462268655] [2021-10-22 22:59:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:03,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-22 22:59:04,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:04,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462268655] [2021-10-22 22:59:04,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462268655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:04,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053674672] [2021-10-22 22:59:04,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-22 22:59:04,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:04,099 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 22:59:04,100 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 22:59:04,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-22 22:59:04,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 22:59:04,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-22 22:59:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-22 22:59:04,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053674672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:04,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:04,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-22 22:59:04,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695436803] [2021-10-22 22:59:04,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-22 22:59:04,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-22 22:59:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-22 22:59:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:04,625 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:04,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 22:59:04,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:04,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:04,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:04,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:04,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:04,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:04,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:04,712 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 22:59:04,906 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 22:59:04,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1386828248, now seen corresponding path program 2 times [2021-10-22 22:59:04,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:04,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530006478] [2021-10-22 22:59:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:04,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 57 proven. 24 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-22 22:59:05,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:05,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530006478] [2021-10-22 22:59:05,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530006478] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:05,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487557138] [2021-10-22 22:59:05,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-22 22:59:05,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:05,151 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 22:59:05,152 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 22:59:05,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-22 22:59:05,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-22 22:59:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-22 22:59:05,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 57 proven. 24 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-10-22 22:59:05,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487557138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:05,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:05,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-22 22:59:05,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525767535] [2021-10-22 22:59:05,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-22 22:59:05,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-22 22:59:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-10-22 22:59:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:05,709 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:05,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:05,709 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:05,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:05,710 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:06,373 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 22:59:06,571 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 22:59:06,571 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2036128419, now seen corresponding path program 1 times [2021-10-22 22:59:06,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:06,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103017837] [2021-10-22 22:59:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:06,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-10-22 22:59:06,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:06,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103017837] [2021-10-22 22:59:06,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103017837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:06,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617086667] [2021-10-22 22:59:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:06,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:06,993 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 22:59:06,994 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 22:59:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:07,289 WARN L261 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 205 conjunts are in the unsatisfiable core [2021-10-22 22:59:07,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-10-22 22:59:08,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617086667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:08,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:08,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-22 22:59:08,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145653344] [2021-10-22 22:59:08,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-22 22:59:08,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-22 22:59:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-22 22:59:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:08,064 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:08,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:08,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:08,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-22 22:59:08,395 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 22:59:08,395 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash 664246112, now seen corresponding path program 1 times [2021-10-22 22:59:08,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:08,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648917349] [2021-10-22 22:59:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:08,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 324 proven. 117 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-10-22 22:59:08,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:08,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648917349] [2021-10-22 22:59:08,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648917349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:08,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769451534] [2021-10-22 22:59:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:08,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:08,888 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 22:59:08,888 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 22:59:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:09,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 155 conjunts are in the unsatisfiable core [2021-10-22 22:59:09,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 324 proven. 117 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-10-22 22:59:10,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769451534] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:10,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:10,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-22 22:59:10,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702270532] [2021-10-22 22:59:10,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-22 22:59:10,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-22 22:59:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-22 22:59:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:10,143 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:10,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:10,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:12,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-22 22:59:12,693 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 22:59:12,694 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:12,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:12,694 INFO L82 PathProgramCache]: Analyzing trace with hash -327120781, now seen corresponding path program 1 times [2021-10-22 22:59:12,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:12,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043474366] [2021-10-22 22:59:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:12,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 2086 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-10-22 22:59:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043474366] [2021-10-22 22:59:13,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043474366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805883995] [2021-10-22 22:59:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:13,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:13,623 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 22:59:13,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-22 22:59:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:14,168 WARN L261 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 469 conjunts are in the unsatisfiable core [2021-10-22 22:59:14,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 2086 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2021-10-22 22:59:15,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805883995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:15,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:15,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-22 22:59:15,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567427473] [2021-10-22 22:59:15,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-22 22:59:15,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-22 22:59:15,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-22 22:59:15,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:15,644 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:15,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:15,644 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:15,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-22 22:59:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:16,143 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash 437302454, now seen corresponding path program 1 times [2021-10-22 22:59:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:16,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729345981] [2021-10-22 22:59:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:16,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1590 proven. 474 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2021-10-22 22:59:17,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:17,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729345981] [2021-10-22 22:59:17,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729345981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:17,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544665929] [2021-10-22 22:59:17,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:17,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:17,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:17,377 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 22:59:17,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-22 22:59:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:18,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 353 conjunts are in the unsatisfiable core [2021-10-22 22:59:18,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1590 proven. 474 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2021-10-22 22:59:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544665929] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:19,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:19,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-22 22:59:19,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887550123] [2021-10-22 22:59:19,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-22 22:59:19,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-22 22:59:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2021-10-22 22:59:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:19,868 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 22:59:19,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:19,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 22:59:33,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-22 22:59:33,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-22 22:59:33,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash 836091086, now seen corresponding path program 1 times [2021-10-22 22:59:33,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:33,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535756029] [2021-10-22 22:59:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:33,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 22097 backedges. 0 proven. 15116 refuted. 0 times theorem prover too weak. 6981 trivial. 0 not checked. [2021-10-22 22:59:36,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:36,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535756029] [2021-10-22 22:59:36,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535756029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:36,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831281990] [2021-10-22 22:59:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:36,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:36,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:36,695 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 22:59:36,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-22 22:59:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:37,925 WARN L261 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 1281 conjunts are in the unsatisfiable core [2021-10-22 22:59:37,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22097 backedges. 0 proven. 15116 refuted. 0 times theorem prover too weak. 6981 trivial. 0 not checked. [2021-10-22 22:59:41,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831281990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:41,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:41,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-22 22:59:41,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430653060] [2021-10-22 22:59:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-22 22:59:41,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-22 22:59:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-22 22:59:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:41,689 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:41,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 22:59:41,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 22:59:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:42,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-22 22:59:42,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-22 22:59:42,539 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 22:59:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 22:59:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1957191355, now seen corresponding path program 1 times [2021-10-22 22:59:42,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 22:59:42,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115306254] [2021-10-22 22:59:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:42,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-22 22:59:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22097 backedges. 10361 proven. 4727 refuted. 0 times theorem prover too weak. 7009 trivial. 0 not checked. [2021-10-22 22:59:49,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-22 22:59:49,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115306254] [2021-10-22 22:59:49,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115306254] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:49,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068269431] [2021-10-22 22:59:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 22:59:49,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-22 22:59:49,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-22 22:59:49,895 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-22 22:59:49,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-22 22:59:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-22 22:59:51,868 WARN L261 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 1601 conjunts are in the unsatisfiable core [2021-10-22 22:59:51,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-22 22:59:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 22097 backedges. 0 proven. 15088 refuted. 0 times theorem prover too weak. 7009 trivial. 0 not checked. [2021-10-22 22:59:55,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068269431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-22 22:59:55,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-22 22:59:55,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-22 22:59:55,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355557932] [2021-10-22 22:59:55,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-22 22:59:55,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-22 22:59:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-22 22:59:55,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-10-22 22:59:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-22 22:59:55,956 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-22 22:59:55,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 7.523809523809524) internal successors, (158), 21 states have internal predecessors, (158), 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 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-10-22 22:59:55,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-22 23:02:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-22 23:02:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-22 23:02:25,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-22 23:02:25,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-22 23:02:25,305 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] === [2021-10-22 23:02:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-22 23:02:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1193015726, now seen corresponding path program 1 times [2021-10-22 23:02:25,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-22 23:02:25,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882095476] [2021-10-22 23:02:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-22 23:02:25,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms