/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-NoForkJoinOpt-wrwc.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-04 01:31:43,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-04 01:31:43,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-04 01:31:43,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-04 01:31:43,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-04 01:31:43,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-04 01:31:43,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-04 01:31:43,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-04 01:31:43,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-04 01:31:43,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-04 01:31:43,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-04 01:31:43,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-04 01:31:43,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-04 01:31:43,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-04 01:31:43,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-04 01:31:43,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-04 01:31:43,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-04 01:31:43,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-04 01:31:43,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-04 01:31:43,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-04 01:31:43,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-04 01:31:43,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-04 01:31:43,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-04 01:31:43,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-04 01:31:43,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-04 01:31:43,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-04 01:31:43,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-04 01:31:43,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-04 01:31:43,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-04 01:31:43,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-04 01:31:43,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-04 01:31:43,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-04 01:31:43,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-04 01:31:43,816 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-NoForkJoinOpt-wrwc.epf [2022-03-04 01:31:43,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-04 01:31:43,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-04 01:31:43,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-04 01:31:43,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-04 01:31:43,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-04 01:31:43,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-04 01:31:43,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * Use SBE=true [2022-03-04 01:31:43,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-04 01:31:43,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-04 01:31:43,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-04 01:31:43,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 01:31:43,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Construct finite automaton lazily=true [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-04 01:31:43,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * MCR: Overapproximate write-read-write conflicts=false [2022-03-04 01:31:43,839 INFO L138 SettingsManager]: * MCR: Optimize fork and join=false [2022-03-04 01:31:43,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-04 01:31:44,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-04 01:31:44,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-04 01:31:44,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-04 01:31:44,034 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-04 01:31:44,035 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-04 01:31:44,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl [2022-03-04 01:31:44,037 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl' [2022-03-04 01:31:44,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-04 01:31:44,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-04 01:31:44,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-04 01:31:44,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-04 01:31:44,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-04 01:31:44,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,093 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-04 01:31:44,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-04 01:31:44,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-04 01:31:44,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-04 01:31:44,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-04 01:31:44,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-04 01:31:44,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-04 01:31:44,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-04 01:31:44,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-04 01:31:44,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/1) ... [2022-03-04 01:31:44,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-04 01:31:44,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:31:44,164 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) [2022-03-04 01:31:44,186 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 [2022-03-04 01:31:44,199 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-04 01:31:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-04 01:31:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-04 01:31:44,200 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-04 01:31:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-04 01:31:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-04 01:31:44,201 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-04 01:31:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-04 01:31:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-04 01:31:44,201 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-04 01:31:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-04 01:31:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-04 01:31:44,202 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-03-04 01:31:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-04 01:31:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-04 01:31:44,203 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-04 01:31:44,243 INFO L234 CfgBuilder]: Building ICFG [2022-03-04 01:31:44,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-04 01:31:44,343 INFO L275 CfgBuilder]: Performing block encoding [2022-03-04 01:31:44,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-04 01:31:44,365 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-04 01:31:44,367 INFO L202 PluginConnector]: Adding new model buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 01:31:44 BoogieIcfgContainer [2022-03-04 01:31:44,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-04 01:31:44,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-04 01:31:44,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-04 01:31:44,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-04 01:31:44,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.03 01:31:44" (1/2) ... [2022-03-04 01:31:44,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e145a2 and model type buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:31:44, skipping insertion in model container [2022-03-04 01:31:44,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.03 01:31:44" (2/2) ... [2022-03-04 01:31:44,386 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-series.wvr.bpl [2022-03-04 01:31:44,391 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-04 01:31:44,391 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-04 01:31:44,391 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-04 01:31:44,391 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-04 01:31:44,446 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-04 01:31:44,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-03-04 01:31:44,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:31:44,495 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) [2022-03-04 01:31:44,502 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 [2022-03-04 01:31:44,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-04 01:31:44,542 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=false, mMcrOverapproximateWrwc=false [2022-03-04 01:31:44,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-04 01:31:45,127 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1006 transitions and produced 792 states. [2022-03-04 01:31:45,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:31:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:31:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1395233696, now seen corresponding path program 1 times [2022-03-04 01:31:45,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:31:45,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952680925] [2022-03-04 01:31:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:31:45,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:31:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:31:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1114 proven. 1348 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-03-04 01:31:47,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:31:47,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952680925] [2022-03-04 01:31:47,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952680925] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 01:31:47,759 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369530334] [2022-03-04 01:31:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:31:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 01:31:47,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:31:47,766 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) [2022-03-04 01:31:47,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-04 01:31:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:31:47,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-04 01:31:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 01:31:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1177 proven. 1085 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-03-04 01:31:50,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 01:31:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2517 backedges. 1999 proven. 216 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-03-04 01:31:51,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369530334] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 01:31:51,989 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 01:31:51,989 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 42, 18] total 125 [2022-03-04 01:31:51,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377637742] [2022-03-04 01:31:51,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 01:31:51,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-03-04 01:31:51,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:31:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-03-04 01:31:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1679, Invalid=14071, Unknown=0, NotChecked=0, Total=15750 [2022-03-04 01:31:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:31:52,026 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:31:52,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 3.4682539682539684) internal successors, (437), 125 states have internal predecessors, (437), 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) [2022-03-04 01:31:52,031 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:04,515 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1827 transitions and produced 1419 states. [2022-03-04 01:32:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2022-03-04 01:32:04,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-04 01:32:04,716 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 [2022-03-04 01:32:04,717 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:32:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:32:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 877508605, now seen corresponding path program 2 times [2022-03-04 01:32:04,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:32:04,718 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505899205] [2022-03-04 01:32:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:32:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:32:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:32:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 3021 proven. 925 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-03-04 01:32:05,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:32:05,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505899205] [2022-03-04 01:32:05,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505899205] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 01:32:05,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604083245] [2022-03-04 01:32:05,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-04 01:32:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 01:32:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:32:05,942 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) [2022-03-04 01:32:05,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-04 01:32:06,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-04 01:32:06,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 01:32:06,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-04 01:32:06,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 01:32:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 2673 proven. 925 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2022-03-04 01:32:08,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 01:32:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 2673 proven. 925 refuted. 0 times theorem prover too weak. 2267 trivial. 0 not checked. [2022-03-04 01:32:11,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604083245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 01:32:11,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 01:32:11,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 157 [2022-03-04 01:32:11,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040411628] [2022-03-04 01:32:11,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 01:32:11,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-03-04 01:32:11,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:32:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-03-04 01:32:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3315, Invalid=21491, Unknown=0, NotChecked=0, Total=24806 [2022-03-04 01:32:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:11,855 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:32:11,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.981012658227848) internal successors, (471), 157 states have internal predecessors, (471), 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) [2022-03-04 01:32:11,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 261 states. [2022-03-04 01:32:11,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:22,013 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2475 transitions and produced 1919 states. [2022-03-04 01:32:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2022-03-04 01:32:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:32:22,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-04 01:32:22,215 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 [2022-03-04 01:32:22,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:32:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:32:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -386614491, now seen corresponding path program 3 times [2022-03-04 01:32:22,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:32:22,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47538068] [2022-03-04 01:32:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:32:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:32:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:32:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14363 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 13726 trivial. 0 not checked. [2022-03-04 01:32:22,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:32:22,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47538068] [2022-03-04 01:32:22,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47538068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-04 01:32:22,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-04 01:32:22,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-04 01:32:22,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104283802] [2022-03-04 01:32:22,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-04 01:32:22,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-04 01:32:22,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:32:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-04 01:32:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-04 01:32:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:22,411 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:32:22,411 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) [2022-03-04 01:32:22,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 330 states. [2022-03-04 01:32:22,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:32:22,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:23,615 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 3278 transitions and produced 2265 states. [2022-03-04 01:32:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:32:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:32:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:32:23,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-04 01:32:23,617 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:32:23,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:32:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1283946805, now seen corresponding path program 4 times [2022-03-04 01:32:23,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:32:23,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317642328] [2022-03-04 01:32:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:32:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:32:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:32:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15925 backedges. 4682 proven. 10219 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2022-03-04 01:32:33,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:32:33,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317642328] [2022-03-04 01:32:33,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317642328] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 01:32:33,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928073593] [2022-03-04 01:32:33,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-04 01:32:33,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 01:32:33,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:32:33,451 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) [2022-03-04 01:32:33,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-04 01:32:33,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-04 01:32:33,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 01:32:33,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-04 01:32:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 01:32:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15925 backedges. 7204 proven. 4351 refuted. 0 times theorem prover too weak. 4370 trivial. 0 not checked. [2022-03-04 01:32:42,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 01:32:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 15925 backedges. 8378 proven. 3050 refuted. 0 times theorem prover too weak. 4497 trivial. 0 not checked. [2022-03-04 01:32:46,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928073593] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 01:32:46,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 01:32:46,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 88, 32] total 310 [2022-03-04 01:32:46,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426579724] [2022-03-04 01:32:46,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 01:32:46,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 311 states [2022-03-04 01:32:46,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:32:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 311 interpolants. [2022-03-04 01:32:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7924, Invalid=88486, Unknown=0, NotChecked=0, Total=96410 [2022-03-04 01:32:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:32:46,760 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:32:46,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 311 states, 311 states have (on average 2.8810289389067525) internal successors, (896), 310 states have internal predecessors, (896), 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) [2022-03-04 01:32:46,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:32:46,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:32:46,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:32:46,766 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:33:23,376 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 2922 transitions and produced 2232 states. [2022-03-04 01:33:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:33:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:33:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:33:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 418 states. [2022-03-04 01:33:23,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-04 01:33:23,583 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 [2022-03-04 01:33:23,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:33:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:33:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1422091902, now seen corresponding path program 5 times [2022-03-04 01:33:23,584 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:33:23,584 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755021725] [2022-03-04 01:33:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:33:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:33:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:33:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14262 backedges. 5635 proven. 5282 refuted. 0 times theorem prover too weak. 3345 trivial. 0 not checked. [2022-03-04 01:33:31,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:33:31,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755021725] [2022-03-04 01:33:31,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755021725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 01:33:31,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962884645] [2022-03-04 01:33:31,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-04 01:33:31,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 01:33:31,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:33:31,636 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) [2022-03-04 01:33:31,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-04 01:33:32,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 80 check-sat command(s) [2022-03-04 01:33:32,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 01:33:32,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 130 conjunts are in the unsatisfiable core [2022-03-04 01:33:32,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 01:33:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14262 backedges. 6365 proven. 6654 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2022-03-04 01:33:45,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 01:33:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14262 backedges. 6365 proven. 6654 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2022-03-04 01:33:55,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962884645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 01:33:55,021 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 01:33:55,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 129, 81] total 365 [2022-03-04 01:33:55,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603717316] [2022-03-04 01:33:55,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 01:33:55,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 366 states [2022-03-04 01:33:55,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:33:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 366 interpolants. [2022-03-04 01:33:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19169, Invalid=114421, Unknown=0, NotChecked=0, Total=133590 [2022-03-04 01:33:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:33:55,033 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:33:55,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 366 states, 366 states have (on average 3.1557377049180326) internal successors, (1155), 365 states have internal predecessors, (1155), 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) [2022-03-04 01:33:55,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:33:55,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:33:55,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:33:55,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 418 states. [2022-03-04 01:33:55,034 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:34:56,903 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 5843 transitions and produced 3808 states. [2022-03-04 01:34:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:34:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:34:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:34:56,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 732 states. [2022-03-04 01:34:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 503 states. [2022-03-04 01:34:56,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-04 01:34:57,104 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 [2022-03-04 01:34:57,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-04 01:34:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-04 01:34:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 751577018, now seen corresponding path program 6 times [2022-03-04 01:34:57,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-04 01:34:57,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483088105] [2022-03-04 01:34:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-04 01:34:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-04 01:34:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-04 01:35:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 50974 backedges. 16912 proven. 29225 refuted. 0 times theorem prover too weak. 4837 trivial. 0 not checked. [2022-03-04 01:35:31,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-04 01:35:31,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483088105] [2022-03-04 01:35:31,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483088105] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-04 01:35:31,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936074968] [2022-03-04 01:35:31,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-04 01:35:31,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-04 01:35:31,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-04 01:35:31,884 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) [2022-03-04 01:35:31,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-04 01:35:38,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 176 check-sat command(s) [2022-03-04 01:35:38,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-04 01:35:38,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 81 conjunts are in the unsatisfiable core [2022-03-04 01:35:38,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-04 01:35:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 50974 backedges. 30621 proven. 5020 refuted. 0 times theorem prover too weak. 15333 trivial. 0 not checked. [2022-03-04 01:35:50,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-04 01:35:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 50974 backedges. 30621 proven. 5020 refuted. 0 times theorem prover too weak. 15333 trivial. 0 not checked. [2022-03-04 01:35:56,983 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936074968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-04 01:35:56,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-04 01:35:56,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [364, 69, 69] total 490 [2022-03-04 01:35:56,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92415029] [2022-03-04 01:35:56,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-04 01:35:56,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 491 states [2022-03-04 01:35:56,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-04 01:35:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 491 interpolants. [2022-03-04 01:35:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38898, Invalid=201692, Unknown=0, NotChecked=0, Total=240590 [2022-03-04 01:35:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-04 01:35:57,010 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-03-04 01:35:57,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 491 states, 491 states have (on average 2.409368635437882) internal successors, (1183), 490 states have internal predecessors, (1183), 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) [2022-03-04 01:35:57,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 334 states. [2022-03-04 01:35:57,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 165 states. [2022-03-04 01:35:57,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-03-04 01:35:57,011 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 732 states. [2022-03-04 01:35:57,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 503 states. [2022-03-04 01:35:57,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.