/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-MCRwithDepranks-Lazy-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-820ea7a [2022-02-19 22:46:42,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-19 22:46:42,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-19 22:46:42,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-19 22:46:42,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-19 22:46:42,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-19 22:46:42,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-19 22:46:42,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-19 22:46:42,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-19 22:46:42,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-19 22:46:42,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-19 22:46:42,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-19 22:46:42,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-19 22:46:42,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-19 22:46:42,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-19 22:46:42,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-19 22:46:42,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-19 22:46:42,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-19 22:46:42,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-19 22:46:42,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-19 22:46:42,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-19 22:46:43,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-19 22:46:43,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-19 22:46:43,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-19 22:46:43,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-19 22:46:43,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-19 22:46:43,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-19 22:46:43,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-19 22:46:43,020 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-MCRwithDepranks-Lazy-wrwc.epf [2022-02-19 22:46:43,044 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-19 22:46:43,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-19 22:46:43,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-19 22:46:43,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-19 22:46:43,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-19 22:46:43,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-19 22:46:43,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-19 22:46:43,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-19 22:46:43,045 INFO L138 SettingsManager]: * Use SBE=true [2022-02-19 22:46:43,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-19 22:46:43,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-19 22:46:43,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-19 22:46:43,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-19 22:46:43,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-19 22:46:43,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-19 22:46:43,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-19 22:46:43,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-19 22:46:43,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:46:43,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-19 22:46:43,051 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-02-19 22:46:43,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-19 22:46:43,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-19 22:46:43,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-19 22:46:43,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-19 22:46:43,052 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-19 22:46:43,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-19 22:46:43,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-19 22:46:43,052 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-19 22:46:43,053 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-02-19 22:46:43,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-19 22:46:43,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-19 22:46:43,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-19 22:46:43,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-19 22:46:43,248 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-19 22:46:43,251 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-19 22:46:43,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl [2022-02-19 22:46:43,252 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/difference-det.wvr.bpl' [2022-02-19 22:46:43,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-19 22:46:43,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-19 22:46:43,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-19 22:46:43,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-19 22:46:43,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-19 22:46:43,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,291 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-19 22:46:43,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-19 22:46:43,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-19 22:46:43,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-19 22:46:43,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-19 22:46:43,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-19 22:46:43,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-19 22:46:43,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-19 22:46:43,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-19 22:46:43,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/1) ... [2022-02-19 22:46:43,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-19 22:46:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:46:43,351 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) [2022-02-19 22:46:43,369 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 [2022-02-19 22:46:43,389 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-19 22:46:43,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-19 22:46:43,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-19 22:46:43,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-19 22:46:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-19 22:46:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-19 22:46:43,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-19 22:46:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-19 22:46:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-19 22:46:43,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-19 22:46:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-19 22:46:43,390 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-19 22:46:43,390 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-19 22:46:43,390 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-19 22:46:43,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-19 22:46:43,391 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-19 22:46:43,424 INFO L234 CfgBuilder]: Building ICFG [2022-02-19 22:46:43,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-19 22:46:43,500 INFO L275 CfgBuilder]: Performing block encoding [2022-02-19 22:46:43,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-19 22:46:43,537 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-19 22:46:43,538 INFO L202 PluginConnector]: Adding new model difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:46:43 BoogieIcfgContainer [2022-02-19 22:46:43,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-19 22:46:43,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-19 22:46:43,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-19 22:46:43,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-19 22:46:43,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 10:46:43" (1/2) ... [2022-02-19 22:46:43,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16498fa and model type difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 10:46:43, skipping insertion in model container [2022-02-19 22:46:43,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "difference-det.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 10:46:43" (2/2) ... [2022-02-19 22:46:43,546 INFO L111 eAbstractionObserver]: Analyzing ICFG difference-det.wvr.bpl [2022-02-19 22:46:43,549 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-19 22:46:43,549 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-19 22:46:43,549 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-19 22:46:43,549 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-19 22:46:43,601 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-19 22:46:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-19 22:46:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:46:43,676 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) [2022-02-19 22:46:43,715 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 [2022-02-19 22:46:43,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-19 22:46:43,736 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=false [2022-02-19 22:46:43,737 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-19 22:46:45,855 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 11439 transitions and produced 3241 states. [2022-02-19 22:46:45,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:46:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:46:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1051558199, now seen corresponding path program 1 times [2022-02-19 22:46:45,871 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:46:45,871 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211875678] [2022-02-19 22:46:45,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:46:45,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:46:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:46:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-19 22:46:46,427 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:46:46,427 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211875678] [2022-02-19 22:46:46,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211875678] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:46:46,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796555292] [2022-02-19 22:46:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:46:46,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:46:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:46:46,440 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) [2022-02-19 22:46:46,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-19 22:46:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:46:46,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 57 conjunts are in the unsatisfiable core [2022-02-19 22:46:46,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:46:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-19 22:46:47,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:46:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-02-19 22:46:47,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796555292] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:46:47,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:46:47,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 22 [2022-02-19 22:46:47,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821478397] [2022-02-19 22:46:47,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:46:47,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-19 22:46:47,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:46:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-19 22:46:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-02-19 22:46:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:46:47,600 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:46:47,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 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) [2022-02-19 22:46:47,602 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:46:47,907 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 448 transitions and produced 429 states. [2022-02-19 22:46:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:46:47,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-19 22:46:48,121 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,SelfDestructingSolverStorable0 [2022-02-19 22:46:48,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:46:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:46:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -617996737, now seen corresponding path program 2 times [2022-02-19 22:46:48,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:46:48,123 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183134773] [2022-02-19 22:46:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:46:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:46:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:46:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 142 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-19 22:46:48,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:46:48,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183134773] [2022-02-19 22:46:48,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183134773] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:46:48,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076885296] [2022-02-19 22:46:48,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-19 22:46:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:46:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:46:48,480 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) [2022-02-19 22:46:48,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-19 22:46:48,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-19 22:46:48,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 22:46:48,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-19 22:46:48,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:46:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 142 proven. 108 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-19 22:46:49,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:46:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 70 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-19 22:46:49,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076885296] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:46:49,825 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:46:49,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 64 [2022-02-19 22:46:49,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839345006] [2022-02-19 22:46:49,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:46:49,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-19 22:46:49,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:46:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-19 22:46:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=925, Invalid=3235, Unknown=0, NotChecked=0, Total=4160 [2022-02-19 22:46:49,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:46:49,829 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:46:49,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.246153846153846) internal successors, (211), 64 states have internal predecessors, (211), 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) [2022-02-19 22:46:49,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:46:49,829 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:46:53,134 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 16711 transitions and produced 4671 states. [2022-02-19 22:46:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:46:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-19 22:46:53,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-19 22:46:53,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:46:53,344 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:46:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:46:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash 306123931, now seen corresponding path program 3 times [2022-02-19 22:46:53,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:46:53,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616464627] [2022-02-19 22:46:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:46:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:46:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:46:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 340 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:46:54,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:46:54,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616464627] [2022-02-19 22:46:54,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616464627] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:46:54,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009153527] [2022-02-19 22:46:54,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-19 22:46:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:46:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:46:54,218 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) [2022-02-19 22:46:54,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-19 22:46:54,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-02-19 22:46:54,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 22:46:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-19 22:46:54,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:46:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 209 proven. 4 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-02-19 22:46:54,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:46:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 209 proven. 4 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-02-19 22:46:55,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009153527] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:46:55,395 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:46:55,395 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 11, 11] total 65 [2022-02-19 22:46:55,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791124078] [2022-02-19 22:46:55,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:46:55,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-19 22:46:55,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:46:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-19 22:46:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=3630, Unknown=0, NotChecked=0, Total=4160 [2022-02-19 22:46:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:46:55,398 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:46:55,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.769230769230769) internal successors, (180), 65 states have internal predecessors, (180), 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) [2022-02-19 22:46:55,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:46:55,398 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 50 states. [2022-02-19 22:46:55,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:01,562 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 44330 transitions and produced 11157 states. [2022-02-19 22:47:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:01,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-02-19 22:47:01,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:01,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:47:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:47:01,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1239758501, now seen corresponding path program 4 times [2022-02-19 22:47:01,774 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:47:01,774 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319812282] [2022-02-19 22:47:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:47:01,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:47:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:47:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 289 proven. 222 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-02-19 22:47:02,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:47:02,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319812282] [2022-02-19 22:47:02,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319812282] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:47:02,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748817029] [2022-02-19 22:47:02,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-19 22:47:02,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:47:02,175 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) [2022-02-19 22:47:02,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-19 22:47:02,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-19 22:47:02,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 22:47:02,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-19 22:47:02,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:47:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 427 proven. 428 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-19 22:47:03,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:47:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 488 proven. 367 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-02-19 22:47:04,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748817029] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:47:04,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:47:04,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 44, 44] total 103 [2022-02-19 22:47:04,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426999836] [2022-02-19 22:47:04,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:47:04,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-19 22:47:04,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:47:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-19 22:47:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1676, Invalid=8830, Unknown=0, NotChecked=0, Total=10506 [2022-02-19 22:47:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:04,533 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:47:04,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.8737864077669903) internal successors, (296), 103 states have internal predecessors, (296), 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) [2022-02-19 22:47:04,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:04,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:04,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:04,534 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:12,084 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 691 transitions and produced 610 states. [2022-02-19 22:47:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-19 22:47:12,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-19 22:47:12,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:12,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:47:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:47:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -10267129, now seen corresponding path program 5 times [2022-02-19 22:47:12,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:47:12,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57482022] [2022-02-19 22:47:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:47:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:47:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:47:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:47:12,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:47:12,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57482022] [2022-02-19 22:47:12,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57482022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:47:12,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666324282] [2022-02-19 22:47:12,807 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-19 22:47:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:47:12,809 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) [2022-02-19 22:47:12,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-19 22:47:12,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-02-19 22:47:12,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 22:47:12,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 113 conjunts are in the unsatisfiable core [2022-02-19 22:47:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:47:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:47:15,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:47:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:47:15,476 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666324282] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:47:15,476 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:47:15,476 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 46, 31] total 74 [2022-02-19 22:47:15,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982710378] [2022-02-19 22:47:15,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:47:15,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-19 22:47:15,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:47:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-19 22:47:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=5213, Unknown=0, NotChecked=0, Total=5402 [2022-02-19 22:47:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:15,481 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:47:15,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.5405405405405403) internal successors, (262), 74 states have internal predecessors, (262), 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) [2022-02-19 22:47:15,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:15,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:15,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:15,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 147 states. [2022-02-19 22:47:15,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:39,814 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 122413 transitions and produced 29324 states. [2022-02-19 22:47:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 402 states. [2022-02-19 22:47:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-19 22:47:39,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-19 22:47:40,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:40,018 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:47:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:47:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash -969746931, now seen corresponding path program 6 times [2022-02-19 22:47:40,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:47:40,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87924011] [2022-02-19 22:47:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:47:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:47:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:47:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 1120 proven. 577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:47:41,889 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:47:41,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87924011] [2022-02-19 22:47:41,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87924011] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:47:41,889 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425581889] [2022-02-19 22:47:41,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-19 22:47:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:47:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:47:41,890 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) [2022-02-19 22:47:41,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-19 22:47:41,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-02-19 22:47:41,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-19 22:47:41,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-19 22:47:41,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:47:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 696 proven. 62 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2022-02-19 22:47:43,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:47:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 722 proven. 36 refuted. 0 times theorem prover too weak. 939 trivial. 0 not checked. [2022-02-19 22:47:44,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425581889] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:47:44,224 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:47:44,224 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 18, 18] total 111 [2022-02-19 22:47:44,224 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102185244] [2022-02-19 22:47:44,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:47:44,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2022-02-19 22:47:44,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:47:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2022-02-19 22:47:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1631, Invalid=10579, Unknown=0, NotChecked=0, Total=12210 [2022-02-19 22:47:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:44,228 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:47:44,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 111 states have (on average 2.5585585585585586) internal successors, (284), 111 states have internal predecessors, (284), 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) [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 402 states. [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-02-19 22:47:44,228 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:47:59,847 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1347 transitions and produced 1144 states. [2022-02-19 22:47:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:47:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:47:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:47:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 402 states. [2022-02-19 22:47:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-19 22:47:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2022-02-19 22:47:59,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-19 22:48:00,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:48:00,067 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-19 22:48:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-19 22:48:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash -237916261, now seen corresponding path program 7 times [2022-02-19 22:48:00,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-19 22:48:00,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063194191] [2022-02-19 22:48:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-19 22:48:00,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-19 22:48:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:48:04,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4646 backedges. 2869 proven. 1777 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-19 22:48:04,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-19 22:48:04,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063194191] [2022-02-19 22:48:04,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063194191] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-19 22:48:04,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147104498] [2022-02-19 22:48:04,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-19 22:48:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-19 22:48:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-19 22:48:04,546 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) [2022-02-19 22:48:04,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-19 22:48:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-19 22:48:04,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 85 conjunts are in the unsatisfiable core [2022-02-19 22:48:04,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-19 22:48:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4646 backedges. 2734 proven. 1600 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-19 22:48:10,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-19 22:48:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4646 backedges. 2734 proven. 1600 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-19 22:48:18,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147104498] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-19 22:48:18,528 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-19 22:48:18,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 85, 85] total 284 [2022-02-19 22:48:18,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244489257] [2022-02-19 22:48:18,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-19 22:48:18,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 285 states [2022-02-19 22:48:18,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-19 22:48:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 285 interpolants. [2022-02-19 22:48:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11618, Invalid=69322, Unknown=0, NotChecked=0, Total=80940 [2022-02-19 22:48:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-19 22:48:18,543 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-19 22:48:18,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 285 states, 285 states have (on average 2.1228070175438596) internal successors, (605), 284 states have internal predecessors, (605), 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) [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 63 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 72 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 402 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 225 states. [2022-02-19 22:48:18,543 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.