/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-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-16 22:48:03,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-16 22:48:03,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-16 22:48:03,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-16 22:48:03,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-16 22:48:03,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-16 22:48:03,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-16 22:48:03,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-16 22:48:03,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-16 22:48:03,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-16 22:48:03,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-16 22:48:03,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-16 22:48:03,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-16 22:48:03,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-16 22:48:03,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-16 22:48:03,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-16 22:48:03,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-16 22:48:03,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-16 22:48:03,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-16 22:48:03,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-16 22:48:03,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-16 22:48:03,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-16 22:48:03,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-16 22:48:03,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-16 22:48:03,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-16 22:48:03,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-16 22:48:03,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-16 22:48:03,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-16 22:48:03,369 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-MCRwithoutDepranks-Lazy.epf [2022-03-16 22:48:03,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-16 22:48:03,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-16 22:48:03,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-16 22:48:03,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-16 22:48:03,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-16 22:48:03,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-16 22:48:03,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-16 22:48:03,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-16 22:48:03,410 INFO L138 SettingsManager]: * Use SBE=true [2022-03-16 22:48:03,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-16 22:48:03,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-16 22:48:03,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-16 22:48:03,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-16 22:48:03,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-16 22:48:03,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-16 22:48:03,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-16 22:48:03,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-16 22:48:03,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-16 22:48:03,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 22:48:03,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-16 22:48:03,414 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-16 22:48:03,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-16 22:48:03,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-16 22:48:03,416 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS [2022-03-16 22:48:03,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-16 22:48:03,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-16 22:48:03,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-16 22:48:03,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-16 22:48:03,683 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-16 22:48:03,687 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-16 22:48:03,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series-array.wvr.bpl [2022-03-16 22:48:03,689 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series-array.wvr.bpl' [2022-03-16 22:48:03,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-16 22:48:03,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-16 22:48:03,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-16 22:48:03,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-16 22:48:03,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-16 22:48:03,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,736 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-16 22:48:03,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-16 22:48:03,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-16 22:48:03,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-16 22:48:03,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-16 22:48:03,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-16 22:48:03,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-16 22:48:03,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-16 22:48:03,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-16 22:48:03,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/1) ... [2022-03-16 22:48:03,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-16 22:48:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:48:03,801 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) [2022-03-16 22:48:03,817 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 [2022-03-16 22:48:03,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-16 22:48:03,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-16 22:48:03,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-16 22:48:03,835 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-16 22:48:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-16 22:48:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-16 22:48:03,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-16 22:48:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-16 22:48:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-16 22:48:03,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-16 22:48:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-16 22:48:03,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-16 22:48:03,836 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-16 22:48:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-16 22:48:03,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-16 22:48:03,837 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-16 22:48:03,886 INFO L234 CfgBuilder]: Building ICFG [2022-03-16 22:48:03,888 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-16 22:48:04,016 INFO L275 CfgBuilder]: Performing block encoding [2022-03-16 22:48:04,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-16 22:48:04,040 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-16 22:48:04,042 INFO L202 PluginConnector]: Adding new model buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:48:04 BoogieIcfgContainer [2022-03-16 22:48:04,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-16 22:48:04,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-16 22:48:04,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-16 22:48:04,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-16 22:48:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 10:48:03" (1/2) ... [2022-03-16 22:48:04,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e145a2 and model type buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:48:04, skipping insertion in model container [2022-03-16 22:48:04,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 10:48:04" (2/2) ... [2022-03-16 22:48:04,053 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-series-array.wvr.bpl [2022-03-16 22:48:04,057 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-16 22:48:04,058 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-16 22:48:04,058 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-16 22:48:04,058 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-16 22:48:04,128 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-16 22:48:04,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-16 22:48:04,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:48:04,225 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) [2022-03-16 22:48:04,226 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 [2022-03-16 22:48:04,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-16 22:48:04,264 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=true [2022-03-16 22:48:04,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-16 22:48:04,899 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1447 transitions and produced 1360 states. [2022-03-16 22:48:04,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:48:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:48:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash -789047253, now seen corresponding path program 1 times [2022-03-16 22:48:04,919 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:48:04,919 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637369896] [2022-03-16 22:48:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:48:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:48:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:48:05,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8611 backedges. 2745 proven. 0 refuted. 0 times theorem prover too weak. 5866 trivial. 0 not checked. [2022-03-16 22:48:05,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:48:05,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637369896] [2022-03-16 22:48:05,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637369896] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-16 22:48:05,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-16 22:48:05,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-16 22:48:05,417 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637343792] [2022-03-16 22:48:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-16 22:48:05,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-16 22:48:05,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:48:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-16 22:48:05,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-16 22:48:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:48:05,515 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:48:05,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2022-03-16 22:48:05,526 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:48:06,494 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3162 transitions and produced 2737 states. [2022-03-16 22:48:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:48:06,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-16 22:48:06,496 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:48:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:48:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1809166747, now seen corresponding path program 2 times [2022-03-16 22:48:06,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:48:06,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609947167] [2022-03-16 22:48:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:48:06,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:48:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:48:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 48317 backedges. 33780 proven. 9160 refuted. 0 times theorem prover too weak. 5377 trivial. 0 not checked. [2022-03-16 22:48:07,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:48:07,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609947167] [2022-03-16 22:48:07,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609947167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:48:07,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727383126] [2022-03-16 22:48:07,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-16 22:48:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:48:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:48:07,444 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) [2022-03-16 22:48:07,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-16 22:48:07,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-16 22:48:07,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:48:07,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1652 conjuncts, 50 conjunts are in the unsatisfiable core [2022-03-16 22:48:07,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:48:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 48317 backedges. 355 proven. 18850 refuted. 0 times theorem prover too weak. 29112 trivial. 0 not checked. [2022-03-16 22:48:11,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:48:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 48317 backedges. 2405 proven. 16785 refuted. 0 times theorem prover too weak. 29127 trivial. 0 not checked. [2022-03-16 22:48:14,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727383126] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:48:14,144 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:48:14,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 49, 39] total 101 [2022-03-16 22:48:14,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619807643] [2022-03-16 22:48:14,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:48:14,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-03-16 22:48:14,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:48:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-03-16 22:48:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2722, Invalid=7580, Unknown=0, NotChecked=0, Total=10302 [2022-03-16 22:48:14,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:48:14,155 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:48:14,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 4.176470588235294) internal successors, (426), 101 states have internal predecessors, (426), 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) [2022-03-16 22:48:14,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:48:14,155 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:48:21,668 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2833 transitions and produced 2309 states. [2022-03-16 22:48:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:48:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-16 22:48:21,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-16 22:48:21,891 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,SelfDestructingSolverStorable1 [2022-03-16 22:48:21,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:48:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:48:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1422594373, now seen corresponding path program 3 times [2022-03-16 22:48:21,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:48:21,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405666481] [2022-03-16 22:48:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:48:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:48:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:48:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 23408 backedges. 10083 proven. 10905 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2022-03-16 22:48:37,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:48:37,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405666481] [2022-03-16 22:48:37,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405666481] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:48:37,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732427557] [2022-03-16 22:48:37,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-16 22:48:37,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:48:37,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:48:37,696 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) [2022-03-16 22:48:37,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-16 22:48:37,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-03-16 22:48:37,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:48:37,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-16 22:48:37,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:48:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23408 backedges. 1988 proven. 5 refuted. 0 times theorem prover too weak. 21415 trivial. 0 not checked. [2022-03-16 22:48:38,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:48:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 23408 backedges. 1988 proven. 5 refuted. 0 times theorem prover too weak. 21415 trivial. 0 not checked. [2022-03-16 22:48:39,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732427557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:48:39,387 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:48:39,387 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 6, 6] total 238 [2022-03-16 22:48:39,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33511998] [2022-03-16 22:48:39,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:48:39,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 238 states [2022-03-16 22:48:39,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:48:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2022-03-16 22:48:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13064, Invalid=43342, Unknown=0, NotChecked=0, Total=56406 [2022-03-16 22:48:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:48:39,414 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:48:39,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 238 states, 238 states have (on average 1.8529411764705883) internal successors, (441), 238 states have internal predecessors, (441), 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) [2022-03-16 22:48:39,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:48:39,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 169 states. [2022-03-16 22:48:39,415 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:49:27,153 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3943 transitions and produced 3441 states. [2022-03-16 22:49:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:49:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-03-16 22:49:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2022-03-16 22:49:27,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-16 22:49:27,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:49:27,355 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:49:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:49:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash 814647595, now seen corresponding path program 4 times [2022-03-16 22:49:27,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:49:27,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409299746] [2022-03-16 22:49:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:49:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:49:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:50:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 51817 backedges. 16395 proven. 33002 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2022-03-16 22:50:09,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:50:09,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409299746] [2022-03-16 22:50:09,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409299746] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:50:09,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319799848] [2022-03-16 22:50:09,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-16 22:50:09,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:50:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:50:09,861 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) [2022-03-16 22:50:09,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-16 22:50:10,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-16 22:50:10,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:50:10,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 86 conjunts are in the unsatisfiable core [2022-03-16 22:50:10,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:50:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 51817 backedges. 16017 proven. 2501 refuted. 0 times theorem prover too weak. 33299 trivial. 0 not checked. [2022-03-16 22:50:25,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:50:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 51817 backedges. 16017 proven. 2501 refuted. 0 times theorem prover too weak. 33299 trivial. 0 not checked. [2022-03-16 22:50:42,639 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319799848] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:50:42,639 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:50:42,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [418, 85, 85] total 586 [2022-03-16 22:50:42,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602411616] [2022-03-16 22:50:42,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:50:42,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 587 states [2022-03-16 22:50:42,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:50:42,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 587 interpolants. [2022-03-16 22:50:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34891, Invalid=309091, Unknown=0, NotChecked=0, Total=343982 [2022-03-16 22:50:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:50:42,677 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:50:42,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 587 states, 587 states have (on average 2.1379897785349233) internal successors, (1255), 586 states have internal predecessors, (1255), 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) [2022-03-16 22:50:42,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:50:42,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 169 states. [2022-03-16 22:50:42,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 675 states. [2022-03-16 22:50:42,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:51:14,744 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3854 transitions and produced 3090 states. [2022-03-16 22:51:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:51:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-03-16 22:51:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 678 states. [2022-03-16 22:51:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-03-16 22:51:14,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-16 22:51:14,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:51:14,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:51:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:51:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 466341701, now seen corresponding path program 5 times [2022-03-16 22:51:14,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:51:14,949 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773660433] [2022-03-16 22:51:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:51:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:51:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-16 22:51:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 33562 backedges. 12020 proven. 18554 refuted. 0 times theorem prover too weak. 2988 trivial. 0 not checked. [2022-03-16 22:51:30,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-16 22:51:30,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773660433] [2022-03-16 22:51:30,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773660433] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-16 22:51:30,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356543794] [2022-03-16 22:51:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-16 22:51:30,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:51:30,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-16 22:51:30,836 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) [2022-03-16 22:51:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-16 22:51:32,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 113 check-sat command(s) [2022-03-16 22:51:32,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-16 22:51:32,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 212 conjunts are in the unsatisfiable core [2022-03-16 22:51:32,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-16 22:52:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 33562 backedges. 9622 proven. 23891 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-03-16 22:52:01,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-16 22:52:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 33562 backedges. 10442 proven. 23024 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-16 22:52:27,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356543794] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-16 22:52:27,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-16 22:52:27,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [243, 211, 141] total 593 [2022-03-16 22:52:27,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741051871] [2022-03-16 22:52:27,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-16 22:52:27,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 594 states [2022-03-16 22:52:27,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-16 22:52:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 594 interpolants. [2022-03-16 22:52:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34447, Invalid=317795, Unknown=0, NotChecked=0, Total=352242 [2022-03-16 22:52:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:52:27,250 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-16 22:52:27,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 594 states, 594 states have (on average 2.9242424242424243) internal successors, (1737), 593 states have internal predecessors, (1737), 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) [2022-03-16 22:52:27,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:52:27,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 171 states. [2022-03-16 22:52:27,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 678 states. [2022-03-16 22:52:27,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 303 states. [2022-03-16 22:52:27,251 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-16 22:56:03,290 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 55047 transitions and produced 44631 states. [2022-03-16 22:56:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-16 22:56:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-03-16 22:56:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 678 states. [2022-03-16 22:56:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2022-03-16 22:56:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1232 states. [2022-03-16 22:56:03,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-16 22:56:03,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-16 22:56:03,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-16 22:56:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-16 22:56:03,502 INFO L85 PathProgramCache]: Analyzing trace with hash 849424748, now seen corresponding path program 6 times [2022-03-16 22:56:03,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-16 22:56:03,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478044388] [2022-03-16 22:56:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-16 22:56:03,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-16 22:57:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat