/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/avg20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:14:00,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:14:00,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:14:00,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 17:14:00,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:14:00,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:14:00,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:14:00,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:14:00,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:14:00,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:14:00,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:14:00,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:14:00,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:14:00,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:14:00,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:14:00,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:14:00,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:14:00,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:14:00,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:14:00,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:14:00,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:14:00,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:14:00,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:14:00,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:14:00,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:14:00,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:14:00,610 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:14:00,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:14:00,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:14:00,611 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:14:00,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:14:00,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:14:00,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:14:00,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:14:00,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:14:00,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:14:00,613 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:14:00,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:14:00,614 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:14:00,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:14:00,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:14:00,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:14:00,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:14:00,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:14:00,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:14:00,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:14:00,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:00,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:14:00,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:14:00,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:14:00,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:14:00,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:14:00,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:14:00,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:14:00,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:14:00,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:14:00,996 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:14:00,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg20-1.i [2022-10-15 17:14:01,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c191a50/c1929123f857496ebab9f8d1969bb455/FLAGcaa499d96 [2022-10-15 17:14:01,634 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:14:01,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg20-1.i [2022-10-15 17:14:01,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c191a50/c1929123f857496ebab9f8d1969bb455/FLAGcaa499d96 [2022-10-15 17:14:01,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c191a50/c1929123f857496ebab9f8d1969bb455 [2022-10-15 17:14:02,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:14:02,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:14:02,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:02,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:14:02,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:14:02,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:01" (1/1) ... [2022-10-15 17:14:02,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17569cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02, skipping insertion in model container [2022-10-15 17:14:02,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:01" (1/1) ... [2022-10-15 17:14:02,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:14:02,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:14:02,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg20-1.i[1172,1185] [2022-10-15 17:14:02,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:02,267 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:14:02,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg20-1.i[1172,1185] [2022-10-15 17:14:02,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:02,308 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:14:02,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02 WrapperNode [2022-10-15 17:14:02,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:02,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:02,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:14:02,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:14:02,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,352 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:14:02,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:02,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:14:02,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:14:02,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:14:02,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:14:02,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:14:02,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:14:02,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:14:02,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (1/1) ... [2022-10-15 17:14:02,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:02,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:02,421 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) [2022-10-15 17:14:02,432 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 [2022-10-15 17:14:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:14:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:14:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:14:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:14:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-10-15 17:14:02,518 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-10-15 17:14:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:14:02,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:14:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:14:02,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:14:02,609 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:14:02,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:14:03,001 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:14:03,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:14:03,017 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:14:03,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:03 BoogieIcfgContainer [2022-10-15 17:14:03,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:14:03,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:14:03,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:14:03,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:14:03,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:14:01" (1/3) ... [2022-10-15 17:14:03,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4441ca67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:03, skipping insertion in model container [2022-10-15 17:14:03,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:02" (2/3) ... [2022-10-15 17:14:03,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4441ca67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:03, skipping insertion in model container [2022-10-15 17:14:03,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:03" (3/3) ... [2022-10-15 17:14:03,034 INFO L112 eAbstractionObserver]: Analyzing ICFG avg20-1.i [2022-10-15 17:14:03,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:14:03,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 17:14:03,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:14:03,152 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65e929f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:14:03,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 17:14:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:03,175 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:03,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:03,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:03,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877074, now seen corresponding path program 1 times [2022-10-15 17:14:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:03,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451406777] [2022-10-15 17:14:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:03,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:03,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451406777] [2022-10-15 17:14:03,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451406777] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:03,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:03,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773633054] [2022-10-15 17:14:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:03,601 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:03,742 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-10-15 17:14:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:03,753 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:14:03,754 INFO L226 Difference]: Without dead ends: 45 [2022-10-15 17:14:03,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:03,760 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:03,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 62 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-15 17:14:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-15 17:14:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-15 17:14:03,805 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 6 [2022-10-15 17:14:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:03,806 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-15 17:14:03,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:03,806 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-15 17:14:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:03,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:03,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:03,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:14:03,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:03,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877075, now seen corresponding path program 1 times [2022-10-15 17:14:03,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:03,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921068932] [2022-10-15 17:14:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:04,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921068932] [2022-10-15 17:14:04,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921068932] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:04,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:04,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:04,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108240546] [2022-10-15 17:14:04,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:04,031 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:04,181 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-10-15 17:14:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:04,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:04,183 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:14:04,183 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:14:04,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:04,187 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:04,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:14:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-15 17:14:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 17:14:04,205 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2022-10-15 17:14:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:04,205 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 17:14:04,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 17:14:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:14:04,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:04,206 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:04,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:14:04,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:04,215 INFO L85 PathProgramCache]: Analyzing trace with hash 615506454, now seen corresponding path program 1 times [2022-10-15 17:14:04,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:04,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008298258] [2022-10-15 17:14:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:04,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008298258] [2022-10-15 17:14:04,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008298258] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:04,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927290846] [2022-10-15 17:14:04,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:04,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:04,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:04,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:04,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:14:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:04,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:14:04,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:04,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:04,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:04,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927290846] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:04,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:04,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:14:04,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132105464] [2022-10-15 17:14:04,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:04,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:14:04,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:14:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:14:04,957 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:05,224 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-15 17:14:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:14:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:05,228 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:14:05,228 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:14:05,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:14:05,231 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:05,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:14:05,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-15 17:14:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-10-15 17:14:05,243 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 10 [2022-10-15 17:14:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:05,244 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-10-15 17:14:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-10-15 17:14:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:14:05,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:05,246 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:14:05,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:05,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash 251852191, now seen corresponding path program 2 times [2022-10-15 17:14:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006319740] [2022-10-15 17:14:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:05,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:05,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006319740] [2022-10-15 17:14:05,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006319740] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932652039] [2022-10-15 17:14:05,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:05,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:05,820 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) [2022-10-15 17:14:05,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:14:05,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:05,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:05,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:14:05,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:05,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:06,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:06,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932652039] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:06,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:06,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2022-10-15 17:14:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427551028] [2022-10-15 17:14:06,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:06,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:06,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:06,177 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:06,385 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 17:14:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:14:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-15 17:14:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:06,390 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:14:06,390 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 17:14:06,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:14:06,394 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:06,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 17:14:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-10-15 17:14:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:06,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-10-15 17:14:06,414 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2022-10-15 17:14:06,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:06,415 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-10-15 17:14:06,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-10-15 17:14:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 17:14:06,418 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:06,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:06,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:14:06,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -493245006, now seen corresponding path program 1 times [2022-10-15 17:14:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:06,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317304876] [2022-10-15 17:14:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:06,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:14:06,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:06,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317304876] [2022-10-15 17:14:06,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317304876] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:06,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:06,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:14:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317828896] [2022-10-15 17:14:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:06,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:14:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:14:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:14:06,884 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:06,934 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-10-15 17:14:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:14:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2022-10-15 17:14:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:06,938 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:14:06,938 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:14:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:14:06,942 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:06,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:06,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:14:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-10-15 17:14:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-10-15 17:14:06,948 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 42 [2022-10-15 17:14:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:06,948 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-10-15 17:14:06,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-10-15 17:14:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 17:14:06,950 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:06,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:06,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:14:06,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash 988824045, now seen corresponding path program 1 times [2022-10-15 17:14:06,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:06,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409227038] [2022-10-15 17:14:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:06,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:14:07,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:07,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409227038] [2022-10-15 17:14:07,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409227038] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:07,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083979323] [2022-10-15 17:14:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:07,074 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) [2022-10-15 17:14:07,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:14:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:07,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 17:14:07,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:14:07,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083979323] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:07,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:07,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 17:14:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551163576] [2022-10-15 17:14:07,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:07,223 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:07,253 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-10-15 17:14:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-10-15 17:14:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:07,255 INFO L225 Difference]: With dead ends: 62 [2022-10-15 17:14:07,255 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 17:14:07,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:07,256 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:07,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 17:14:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-10-15 17:14:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 57 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2022-10-15 17:14:07,262 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 47 [2022-10-15 17:14:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:07,263 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2022-10-15 17:14:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2022-10-15 17:14:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 17:14:07,266 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:07,266 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:07,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:07,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1612442477, now seen corresponding path program 2 times [2022-10-15 17:14:07,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:07,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802196370] [2022-10-15 17:14:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:07,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 17:14:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-15 17:14:07,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802196370] [2022-10-15 17:14:07,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802196370] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214407905] [2022-10-15 17:14:07,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:07,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:07,843 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) [2022-10-15 17:14:07,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:14:07,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:07,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:07,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:07,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 158 proven. 66 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-10-15 17:14:08,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-15 17:14:08,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214407905] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:08,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:08,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 17:14:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118263631] [2022-10-15 17:14:08,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:08,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:14:08,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:14:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:08,122 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:08,180 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-10-15 17:14:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2022-10-15 17:14:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:08,182 INFO L225 Difference]: With dead ends: 94 [2022-10-15 17:14:08,182 INFO L226 Difference]: Without dead ends: 94 [2022-10-15 17:14:08,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:08,183 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:08,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-15 17:14:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-15 17:14:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 86 states have (on average 1.058139534883721) internal successors, (91), 89 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-10-15 17:14:08,192 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 79 [2022-10-15 17:14:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:08,192 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-10-15 17:14:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-10-15 17:14:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-15 17:14:08,195 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:08,195 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:08,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:08,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:08,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1641165203, now seen corresponding path program 3 times [2022-10-15 17:14:08,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:08,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908958197] [2022-10-15 17:14:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:14:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2022-10-15 17:14:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908958197] [2022-10-15 17:14:08,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908958197] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:08,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643867560] [2022-10-15 17:14:08,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:14:08,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:08,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:08,907 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) [2022-10-15 17:14:08,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:14:08,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 17:14:08,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:08,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:08,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:09,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2022-10-15 17:14:09,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:09,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643867560] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:09,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:09,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-10-15 17:14:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585419333] [2022-10-15 17:14:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:09,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:14:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:14:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:09,416 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:09,459 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2022-10-15 17:14:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:14:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 143 [2022-10-15 17:14:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:09,462 INFO L225 Difference]: With dead ends: 155 [2022-10-15 17:14:09,462 INFO L226 Difference]: Without dead ends: 155 [2022-10-15 17:14:09,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:09,464 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:09,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 59 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-10-15 17:14:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-10-15 17:14:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2022-10-15 17:14:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 145 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2022-10-15 17:14:09,474 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 143 [2022-10-15 17:14:09,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:09,475 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2022-10-15 17:14:09,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2022-10-15 17:14:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-10-15 17:14:09,478 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:09,478 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:09,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:09,694 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 804088009, now seen corresponding path program 1 times [2022-10-15 17:14:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995141482] [2022-10-15 17:14:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:14:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-10-15 17:14:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3585 trivial. 0 not checked. [2022-10-15 17:14:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995141482] [2022-10-15 17:14:10,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995141482] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:10,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087635057] [2022-10-15 17:14:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:10,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:10,009 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) [2022-10-15 17:14:10,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:14:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:14:10,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1628 proven. 378 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2022-10-15 17:14:10,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2022-10-15 17:14:10,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087635057] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:10,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:10,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 24 [2022-10-15 17:14:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621546629] [2022-10-15 17:14:10,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 17:14:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 17:14:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:14:10,678 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 17:14:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:10,778 INFO L93 Difference]: Finished difference Result 208 states and 211 transitions. [2022-10-15 17:14:10,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-15 17:14:10,778 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 208 [2022-10-15 17:14:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:10,780 INFO L225 Difference]: With dead ends: 208 [2022-10-15 17:14:10,781 INFO L226 Difference]: Without dead ends: 208 [2022-10-15 17:14:10,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 392 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-10-15 17:14:10,782 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 68 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:10,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 139 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-10-15 17:14:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2022-10-15 17:14:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 197 states have (on average 1.0203045685279188) internal successors, (201), 198 states have internal predecessors, (201), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2022-10-15 17:14:10,792 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 208 [2022-10-15 17:14:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:10,792 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2022-10-15 17:14:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 17:14:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2022-10-15 17:14:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-10-15 17:14:10,797 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:10,797 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:10,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:11,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:11,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:11,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1934610866, now seen corresponding path program 2 times [2022-10-15 17:14:11,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:11,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811919783] [2022-10-15 17:14:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:14:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-10-15 17:14:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:11,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811919783] [2022-10-15 17:14:11,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811919783] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703470557] [2022-10-15 17:14:11,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:11,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:11,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:11,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:11,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:14:11,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:11,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:11,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:11,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 3290 proven. 7 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:14:11,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:11,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703470557] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:11,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:11,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 17:14:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465967367] [2022-10-15 17:14:11,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:11,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:11,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:11,732 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:11,772 INFO L93 Difference]: Finished difference Result 224 states and 227 transitions. [2022-10-15 17:14:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 285 [2022-10-15 17:14:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:11,774 INFO L225 Difference]: With dead ends: 224 [2022-10-15 17:14:11,775 INFO L226 Difference]: Without dead ends: 224 [2022-10-15 17:14:11,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:11,776 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:11,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 165 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-10-15 17:14:11,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2022-10-15 17:14:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 217 states have (on average 1.0184331797235022) internal successors, (221), 218 states have internal predecessors, (221), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:11,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2022-10-15 17:14:11,785 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 285 [2022-10-15 17:14:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:11,785 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2022-10-15 17:14:11,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2022-10-15 17:14:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-10-15 17:14:11,791 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:11,791 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:11,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:12,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:12,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash 658266098, now seen corresponding path program 3 times [2022-10-15 17:14:12,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:12,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971947157] [2022-10-15 17:14:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:14:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-10-15 17:14:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:12,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:12,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971947157] [2022-10-15 17:14:12,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971947157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:12,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319013861] [2022-10-15 17:14:12,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:14:12,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:12,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:12,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:12,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:14:12,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-15 17:14:12,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:12,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:12,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3290 proven. 81 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:14:13,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:13,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319013861] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:13,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:13,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:14:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173460959] [2022-10-15 17:14:13,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:14:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:14:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:13,165 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:13,243 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2022-10-15 17:14:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:13,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 305 [2022-10-15 17:14:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:13,246 INFO L225 Difference]: With dead ends: 264 [2022-10-15 17:14:13,246 INFO L226 Difference]: Without dead ends: 264 [2022-10-15 17:14:13,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:13,247 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:13,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 203 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-10-15 17:14:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-10-15 17:14:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 257 states have (on average 1.0155642023346303) internal successors, (261), 258 states have internal predecessors, (261), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 267 transitions. [2022-10-15 17:14:13,255 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 267 transitions. Word has length 305 [2022-10-15 17:14:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:13,255 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 267 transitions. [2022-10-15 17:14:13,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 267 transitions. [2022-10-15 17:14:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-10-15 17:14:13,261 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:13,261 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:13,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:13,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:14:13,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash 979403890, now seen corresponding path program 4 times [2022-10-15 17:14:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:13,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276186325] [2022-10-15 17:14:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:14:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-10-15 17:14:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:14,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276186325] [2022-10-15 17:14:14,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276186325] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:14,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142243367] [2022-10-15 17:14:14,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:14:14,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:14,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:14,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:14,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:14:14,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:14:14,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:14,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:14:14,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3290 proven. 469 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:14:15,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:14:15,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142243367] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:15,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:15,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-10-15 17:14:15,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040020273] [2022-10-15 17:14:15,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-15 17:14:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:15,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-15 17:14:15,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:14:15,354 INFO L87 Difference]: Start difference. First operand 264 states and 267 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:15,450 INFO L93 Difference]: Finished difference Result 289 states and 292 transitions. [2022-10-15 17:14:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 17:14:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 345 [2022-10-15 17:14:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:15,452 INFO L225 Difference]: With dead ends: 289 [2022-10-15 17:14:15,452 INFO L226 Difference]: Without dead ends: 289 [2022-10-15 17:14:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 680 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:14:15,453 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:15,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 84 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-10-15 17:14:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-10-15 17:14:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 283 states have internal predecessors, (286), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 292 transitions. [2022-10-15 17:14:15,461 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 292 transitions. Word has length 345 [2022-10-15 17:14:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:15,462 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 292 transitions. [2022-10-15 17:14:15,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 292 transitions. [2022-10-15 17:14:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-10-15 17:14:15,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:15,469 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:15,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:15,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:15,683 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1221687017, now seen corresponding path program 5 times [2022-10-15 17:14:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:15,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140579376] [2022-10-15 17:14:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat