/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3 [2021-10-25 02:32:38,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-25 02:32:38,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-25 02:32:38,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-25 02:32:38,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-25 02:32:38,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-25 02:32:38,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-25 02:32:38,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-25 02:32:38,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-25 02:32:38,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-25 02:32:38,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-25 02:32:38,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-25 02:32:38,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-25 02:32:38,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-25 02:32:38,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-25 02:32:38,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-25 02:32:38,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-25 02:32:38,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-25 02:32:38,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-25 02:32:38,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-25 02:32:38,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-25 02:32:38,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-25 02:32:38,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-25 02:32:38,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-25 02:32:38,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-25 02:32:38,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-25 02:32:38,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-25 02:32:38,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-25 02:32:38,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-25 02:32:38,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-25 02:32:38,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-25 02:32:38,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-25 02:32:38,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-25 02:32:38,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-25 02:32:38,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-25 02:32:38,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-25 02:32:38,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-25 02:32:38,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-25 02:32:38,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-25 02:32:38,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-25 02:32:38,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-25 02:32:38,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Lockstep.epf [2021-10-25 02:32:38,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-25 02:32:38,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-25 02:32:38,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-25 02:32:38,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-25 02:32:38,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-25 02:32:38,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-25 02:32:38,476 INFO L138 SettingsManager]: * Use SBE=true [2021-10-25 02:32:38,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-25 02:32:38,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-25 02:32:38,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-25 02:32:38,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-25 02:32:38,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-25 02:32:38,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 02:32:38,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-25 02:32:38,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-10-25 02:32:38,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-25 02:32:38,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-25 02:32:38,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-25 02:32:38,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-25 02:32:38,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-25 02:32:38,727 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-10-25 02:32:38,728 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-10-25 02:32:38,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr11.bpl [2021-10-25 02:32:38,729 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr11.bpl' [2021-10-25 02:32:38,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-25 02:32:38,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-10-25 02:32:38,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-25 02:32:38,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-25 02:32:38,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-25 02:32:38,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-25 02:32:38,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-25 02:32:38,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-25 02:32:38,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-25 02:32:38,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-25 02:32:38,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-25 02:32:38,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-25 02:32:38,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-25 02:32:38,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/1) ... [2021-10-25 02:32:38,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-25 02:32:38,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 02:32:38,808 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 02:32:38,817 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 02:32:38,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-10-25 02:32:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-25 02:32:38,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-25 02:32:38,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-10-25 02:32:38,843 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-10-25 02:32:38,843 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-10-25 02:32:38,844 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 02:32:38,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-25 02:32:38,948 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-25 02:32:38,949 INFO L202 PluginConnector]: Adding new model incr-decr11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:32:38 BoogieIcfgContainer [2021-10-25 02:32:38,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-25 02:32:38,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-25 02:32:38,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-25 02:32:38,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-25 02:32:38,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 02:32:38" (1/2) ... [2021-10-25 02:32:38,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279dc886 and model type incr-decr11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:32:38, skipping insertion in model container [2021-10-25 02:32:38,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:32:38" (2/2) ... [2021-10-25 02:32:38,956 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr11.bpl [2021-10-25 02:32:38,960 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-25 02:32:38,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-25 02:32:38,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-25 02:32:38,961 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-25 02:32:39,192 INFO L148 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2021-10-25 02:32:39,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-10-25 02:32:39,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 02:32:39,231 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 02:32:39,232 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 02:32:39,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-10-25 02:32:39,270 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 02:32:39,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-25 02:32:40,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2021-10-25 02:32:40,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-25 02:32:40,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1023042365, now seen corresponding path program 1 times [2021-10-25 02:32:40,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-25 02:32:40,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361988801] [2021-10-25 02:32:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 02:32:40,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-25 02:32:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 02:32:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 633 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-10-25 02:32:41,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-25 02:32:41,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361988801] [2021-10-25 02:32:41,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361988801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-25 02:32:41,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550664340] [2021-10-25 02:32:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-25 02:32:41,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-25 02:32:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-25 02:32:41,779 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) [2021-10-25 02:32:41,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-25 02:32:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-25 02:32:42,034 WARN L261 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 343 conjunts are in the unsatisfiable core [2021-10-25 02:32:42,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-25 02:32:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 0 proven. 633 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-10-25 02:32:43,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550664340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-25 02:32:43,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-25 02:32:43,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-25 02:32:43,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802023723] [2021-10-25 02:32:43,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-25 02:32:43,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-25 02:32:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-25 02:32:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-25 02:32:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-25 02:32:43,655 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-10-25 02:32:43,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 02:32:43,657 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.