/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-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-25 07:55:10,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-25 07:55:10,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-25 07:55:10,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-25 07:55:10,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-25 07:55:10,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-25 07:55:10,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-25 07:55:10,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-25 07:55:10,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-25 07:55:10,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-25 07:55:10,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-25 07:55:10,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-25 07:55:10,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-25 07:55:10,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-25 07:55:10,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-25 07:55:10,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-25 07:55:10,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-25 07:55:10,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-25 07:55:10,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-25 07:55:10,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-25 07:55:10,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-25 07:55:10,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-25 07:55:10,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-25 07:55:10,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-25 07:55:10,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-25 07:55:10,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-25 07:55:10,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-25 07:55:10,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-25 07:55:10,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-25 07:55:10,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-25 07:55:10,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-25 07:55:10,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-25 07:55:10,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-25 07:55:10,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-25 07:55:10,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-25 07:55:10,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-25 07:55:10,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-25 07:55:10,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-25 07:55:10,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-25 07:55:10,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-25 07:55:10,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-25 07:55:10,719 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-Random521.epf [2021-10-25 07:55:10,732 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-25 07:55:10,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-25 07:55:10,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-25 07:55:10,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-25 07:55:10,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * Use SBE=true [2021-10-25 07:55:10,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-25 07:55:10,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-25 07:55:10,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-25 07:55:10,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 07:55:10,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-10-25 07:55:10,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-25 07:55:10,737 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 [2021-10-25 07:55:10,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-25 07:55:10,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-25 07:55:10,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-25 07:55:10,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-25 07:55:10,904 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-25 07:55:10,905 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-25 07:55:10,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl [2021-10-25 07:55:10,906 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl' [2021-10-25 07:55:10,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-25 07:55:10,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-25 07:55:10,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-25 07:55:10,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-25 07:55:10,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-25 07:55:10,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-25 07:55:10,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-25 07:55:10,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-25 07:55:10,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-25 07:55:10,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-25 07:55:10,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-25 07:55:10,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-25 07:55:10,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-25 07:55:10,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/1) ... [2021-10-25 07:55:10,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 07:55:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 07:55:11,011 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) [2021-10-25 07:55:11,031 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 [2021-10-25 07:55:11,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-25 07:55:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-25 07:55:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-25 07:55:11,043 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-10-25 07:55:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-10-25 07:55:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-10-25 07:55:11,044 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-25 07:55:11,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-25 07:55:11,154 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-25 07:55:11,155 INFO L202 PluginConnector]: Adding new model incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:55:11 BoogieIcfgContainer [2021-10-25 07:55:11,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-25 07:55:11,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-25 07:55:11,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-25 07:55:11,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-25 07:55:11,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:55:10" (1/2) ... [2021-10-25 07:55:11,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503c07a2 and model type incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:55:11, skipping insertion in model container [2021-10-25 07:55:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:55:11" (2/2) ... [2021-10-25 07:55:11,161 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr15.bpl [2021-10-25 07:55:11,164 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-25 07:55:11,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-25 07:55:11,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-25 07:55:11,164 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-25 07:55:11,400 INFO L148 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2021-10-25 07:55:11,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-25 07:55:11,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 07:55:11,452 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) [2021-10-25 07:55:11,484 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 [2021-10-25 07:55:11,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-25 07:55:11,513 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 [2021-10-25 07:55:11,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-25 07:55:12,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 12 more)] === [2021-10-25 07:55:12,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:55:12,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1560636763, now seen corresponding path program 1 times [2021-10-25 07:55:12,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:55:12,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59828907] [2021-10-25 07:55:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:55:12,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:55:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 07:55:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-25 07:55:12,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 07:55:12,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59828907] [2021-10-25 07:55:12,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59828907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-25 07:55:12,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-25 07:55:12,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-25 07:55:12,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077232916] [2021-10-25 07:55:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-25 07:55:12,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 07:55:12,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-25 07:55:12,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-25 07:55:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:55:12,824 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 07:55:12,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-10-25 07:55:12,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:55:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-25 07:55:17,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-25 07:55:17,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 12 more)] === [2021-10-25 07:55:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 07:55:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash -43639407, now seen corresponding path program 1 times [2021-10-25 07:55:17,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 07:55:17,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955996263] [2021-10-25 07:55:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 07:55:17,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 07:55:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 07:55:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-25 07:55:17,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 07:55:17,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955996263] [2021-10-25 07:55:17,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955996263] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-25 07:55:17,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-25 07:55:17,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-25 07:55:17,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141009157] [2021-10-25 07:55:17,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-25 07:55:17,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 07:55:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-25 07:55:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-25 07:55:17,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 07:55:17,337 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 07:55:17,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-10-25 07:55:17,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-10-25 07:55:17,338 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.