/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/sum40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 02:26:24,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 02:26:24,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 02:26:24,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 02:26:24,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 02:26:24,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 02:26:24,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 02:26:24,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 02:26:24,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 02:26:24,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 02:26:24,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 02:26:24,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 02:26:24,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 02:26:24,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 02:26:24,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 02:26:24,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 02:26:24,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 02:26:24,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 02:26:24,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 02:26:24,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 02:26:24,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 02:26:24,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 02:26:24,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 02:26:24,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 02:26:24,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 02:26:24,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 02:26:24,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 02:26:24,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 02:26:24,424 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 [2022-10-16 02:26:24,453 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 02:26:24,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 02:26:24,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 02:26:24,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 02:26:24,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 02:26:24,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 02:26:24,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 02:26:24,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 02:26:24,456 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 02:26:24,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 02:26:24,457 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 02:26:24,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 02:26:24,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 02:26:24,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 02:26:24,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 02:26:24,458 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 02:26:24,458 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 02:26:24,459 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 02:26:24,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 02:26:24,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 02:26:24,459 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 02:26:24,459 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 02:26:24,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 02:26:24,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 02:26:24,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 02:26:24,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:26:24,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 02:26:24,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 02:26:24,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 02:26:24,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 02:26:24,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 02:26:24,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 02:26:24,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 02:26:24,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 02:26:24,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 02:26:24,884 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 02:26:24,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum40-2.i [2022-10-16 02:26:24,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379257230/cecf8b6ef14d4a6db1c0a8cf2293a69f/FLAG111d59ade [2022-10-16 02:26:25,658 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 02:26:25,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum40-2.i [2022-10-16 02:26:25,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379257230/cecf8b6ef14d4a6db1c0a8cf2293a69f/FLAG111d59ade [2022-10-16 02:26:25,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/379257230/cecf8b6ef14d4a6db1c0a8cf2293a69f [2022-10-16 02:26:25,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 02:26:25,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 02:26:25,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 02:26:25,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 02:26:25,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 02:26:25,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:25,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c174326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25, skipping insertion in model container [2022-10-16 02:26:25,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:25,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 02:26:25,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 02:26:25,913 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/sum40-2.i[1277,1290] [2022-10-16 02:26:25,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:26:25,925 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 02:26:25,953 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/sum40-2.i[1277,1290] [2022-10-16 02:26:25,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:26:25,970 INFO L208 MainTranslator]: Completed translation [2022-10-16 02:26:25,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25 WrapperNode [2022-10-16 02:26:25,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 02:26:25,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 02:26:25,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 02:26:25,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 02:26:25,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:25,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,014 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-10-16 02:26:26,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 02:26:26,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 02:26:26,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 02:26:26,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 02:26:26,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 02:26:26,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 02:26:26,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 02:26:26,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 02:26:26,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (1/1) ... [2022-10-16 02:26:26,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:26:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:26,092 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) [2022-10-16 02:26:26,099 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 [2022-10-16 02:26:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 02:26:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-10-16 02:26:26,147 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-10-16 02:26:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 02:26:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 02:26:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 02:26:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 02:26:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 02:26:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 02:26:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 02:26:26,230 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 02:26:26,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 02:26:26,621 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 02:26:26,635 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 02:26:26,635 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 02:26:26,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:26 BoogieIcfgContainer [2022-10-16 02:26:26,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 02:26:26,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 02:26:26,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 02:26:26,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 02:26:26,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:25" (1/3) ... [2022-10-16 02:26:26,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e51fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:26, skipping insertion in model container [2022-10-16 02:26:26,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:25" (2/3) ... [2022-10-16 02:26:26,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e51fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:26, skipping insertion in model container [2022-10-16 02:26:26,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:26" (3/3) ... [2022-10-16 02:26:26,648 INFO L112 eAbstractionObserver]: Analyzing ICFG sum40-2.i [2022-10-16 02:26:26,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 02:26:26,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-16 02:26:26,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 02:26:26,773 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;@1479bb0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 02:26:26,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-16 02:26:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 57 states have internal predecessors, (64), 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) [2022-10-16 02:26:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 02:26:26,788 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:26,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 02:26:26,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:26,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-16 02:26:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043535516] [2022-10-16 02:26:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:26,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:27,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043535516] [2022-10-16 02:26:27,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043535516] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:27,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:26:27,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 02:26:27,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989347568] [2022-10-16 02:26:27,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:27,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 02:26:27,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 02:26:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 02:26:27,138 INFO L87 Difference]: Start difference. First operand has 62 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 57 states have internal predecessors, (64), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:27,234 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-10-16 02:26:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 02:26:27,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 02:26:27,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:27,246 INFO L225 Difference]: With dead ends: 53 [2022-10-16 02:26:27,247 INFO L226 Difference]: Without dead ends: 51 [2022-10-16 02:26:27,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 02:26:27,253 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:27,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 47 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-16 02:26:27,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-10-16 02:26:27,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 46 states have internal predecessors, (49), 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) [2022-10-16 02:26:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-10-16 02:26:27,300 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 4 [2022-10-16 02:26:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:27,301 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-10-16 02:26:27,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-10-16 02:26:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 02:26:27,302 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:27,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 02:26:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 02:26:27,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:27,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-16 02:26:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:27,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44243317] [2022-10-16 02:26:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44243317] [2022-10-16 02:26:27,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44243317] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:26:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 02:26:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926005649] [2022-10-16 02:26:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 02:26:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 02:26:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 02:26:27,483 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:27,561 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2022-10-16 02:26:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 02:26:27,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 02:26:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:27,564 INFO L225 Difference]: With dead ends: 55 [2022-10-16 02:26:27,564 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 02:26:27,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 02:26:27,566 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:27,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 02:26:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-10-16 02:26:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 48 states have internal predecessors, (51), 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) [2022-10-16 02:26:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-10-16 02:26:27,586 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 4 [2022-10-16 02:26:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:27,586 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-10-16 02:26:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-10-16 02:26:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 02:26:27,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:27,589 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 02:26:27,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-16 02:26:27,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:27,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711046496] [2022-10-16 02:26:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711046496] [2022-10-16 02:26:27,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711046496] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457667959] [2022-10-16 02:26:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:27,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:27,876 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) [2022-10-16 02:26:27,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 02:26:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 02:26:27,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:28,075 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 [2022-10-16 02:26:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:28,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:28,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457667959] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:28,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:28,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-16 02:26:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310721498] [2022-10-16 02:26:28,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:28,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 02:26:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 02:26:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 02:26:28,334 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:28,522 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2022-10-16 02:26:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 02:26:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 02:26:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:28,524 INFO L225 Difference]: With dead ends: 57 [2022-10-16 02:26:28,524 INFO L226 Difference]: Without dead ends: 57 [2022-10-16 02:26:28,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-16 02:26:28,527 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:28,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 92 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-16 02:26:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-16 02:26:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 52 states have internal predecessors, (55), 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) [2022-10-16 02:26:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-10-16 02:26:28,538 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 8 [2022-10-16 02:26:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:28,538 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-10-16 02:26:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:26:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-10-16 02:26:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 02:26:28,540 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:28,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:28,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:28,753 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 [2022-10-16 02:26:28,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 870617607, now seen corresponding path program 1 times [2022-10-16 02:26:28,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696147816] [2022-10-16 02:26:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:28,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 02:26:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:28,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696147816] [2022-10-16 02:26:28,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696147816] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:28,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:26:28,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:26:28,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576759066] [2022-10-16 02:26:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:28,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:26:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:26:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:26:28,946 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-10-16 02:26:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:29,027 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-10-16 02:26:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:26:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 23 [2022-10-16 02:26:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:29,032 INFO L225 Difference]: With dead ends: 56 [2022-10-16 02:26:29,032 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 02:26:29,036 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 [2022-10-16 02:26:29,045 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:29,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 69 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 02:26:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 02:26:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.148936170212766) internal successors, (54), 51 states have internal predecessors, (54), 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) [2022-10-16 02:26:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-10-16 02:26:29,063 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 23 [2022-10-16 02:26:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:29,064 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-10-16 02:26:29,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-10-16 02:26:29,064 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-10-16 02:26:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 02:26:29,065 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:29,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:29,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 02:26:29,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash 870617608, now seen corresponding path program 1 times [2022-10-16 02:26:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:29,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485725877] [2022-10-16 02:26:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485725877] [2022-10-16 02:26:29,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485725877] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:29,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35567211] [2022-10-16 02:26:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:29,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:29,211 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) [2022-10-16 02:26:29,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 02:26:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 02:26:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:29,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:29,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35567211] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:29,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:29,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-16 02:26:29,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293905719] [2022-10-16 02:26:29,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 02:26:29,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 02:26:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-16 02:26:29,468 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2022-10-16 02:26:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:29,533 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-10-16 02:26:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 02:26:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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 23 [2022-10-16 02:26:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:29,535 INFO L225 Difference]: With dead ends: 80 [2022-10-16 02:26:29,535 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 02:26:29,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-16 02:26:29,537 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 30 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:29,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 259 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 02:26:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-10-16 02:26:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 75 states have internal predecessors, (78), 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) [2022-10-16 02:26:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2022-10-16 02:26:29,547 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 23 [2022-10-16 02:26:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:29,547 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2022-10-16 02:26:29,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 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) [2022-10-16 02:26:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2022-10-16 02:26:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 02:26:29,549 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:29,549 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:29,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 02:26:29,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:29,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1710350390, now seen corresponding path program 2 times [2022-10-16 02:26:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547709111] [2022-10-16 02:26:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:26:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547709111] [2022-10-16 02:26:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547709111] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:30,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952531951] [2022-10-16 02:26:30,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:26:30,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:30,151 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) [2022-10-16 02:26:30,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 02:26:30,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 02:26:30,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:26:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 02:26:30,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:30,239 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 [2022-10-16 02:26:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-16 02:26:30,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 02:26:30,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952531951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:30,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 02:26:30,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-10-16 02:26:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948858811] [2022-10-16 02:26:30,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:30,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:26:30,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:26:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-10-16 02:26:30,467 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-16 02:26:30,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:30,573 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2022-10-16 02:26:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:26:30,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 47 [2022-10-16 02:26:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:30,576 INFO L225 Difference]: With dead ends: 84 [2022-10-16 02:26:30,576 INFO L226 Difference]: Without dead ends: 84 [2022-10-16 02:26:30,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-16 02:26:30,577 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:30,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 71 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-16 02:26:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2022-10-16 02:26:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.095890410958904) internal successors, (80), 77 states have internal predecessors, (80), 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) [2022-10-16 02:26:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2022-10-16 02:26:30,586 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 47 [2022-10-16 02:26:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:30,586 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2022-10-16 02:26:30,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-10-16 02:26:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2022-10-16 02:26:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 02:26:30,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:30,588 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:30,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:30,803 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 [2022-10-16 02:26:30,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1560929337, now seen corresponding path program 1 times [2022-10-16 02:26:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:30,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243839134] [2022-10-16 02:26:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:31,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:31,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243839134] [2022-10-16 02:26:31,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243839134] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:31,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002176363] [2022-10-16 02:26:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:31,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:31,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:31,141 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) [2022-10-16 02:26:31,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 02:26:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 02:26:31,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:31,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:31,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002176363] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:31,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:31,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-16 02:26:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530125992] [2022-10-16 02:26:31,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:31,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 02:26:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 02:26:31,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-16 02:26:31,524 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2022-10-16 02:26:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:31,623 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-10-16 02:26:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 02:26:31,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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 51 [2022-10-16 02:26:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:31,625 INFO L225 Difference]: With dead ends: 130 [2022-10-16 02:26:31,625 INFO L226 Difference]: Without dead ends: 130 [2022-10-16 02:26:31,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-16 02:26:31,626 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:31,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 188 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-16 02:26:31,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-10-16 02:26:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 121 states have (on average 1.0578512396694215) internal successors, (128), 125 states have internal predecessors, (128), 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) [2022-10-16 02:26:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-10-16 02:26:31,636 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 51 [2022-10-16 02:26:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:31,637 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-10-16 02:26:31,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2022-10-16 02:26:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-10-16 02:26:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-16 02:26:31,641 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:31,641 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:31,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:31,855 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 [2022-10-16 02:26:31,856 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1707046037, now seen corresponding path program 2 times [2022-10-16 02:26:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:31,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648149908] [2022-10-16 02:26:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648149908] [2022-10-16 02:26:32,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648149908] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:32,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162257399] [2022-10-16 02:26:32,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:26:32,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:32,735 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) [2022-10-16 02:26:32,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 02:26:32,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:26:32,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:26:32,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 02:26:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:33,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 02:26:33,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162257399] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:33,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:33,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2022-10-16 02:26:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349897776] [2022-10-16 02:26:33,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 02:26:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 02:26:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 02:26:33,762 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 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) [2022-10-16 02:26:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:33,931 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2022-10-16 02:26:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 02:26:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 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 99 [2022-10-16 02:26:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:33,935 INFO L225 Difference]: With dead ends: 202 [2022-10-16 02:26:33,935 INFO L226 Difference]: Without dead ends: 202 [2022-10-16 02:26:33,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 02:26:33,937 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 120 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:33,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 165 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-10-16 02:26:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-10-16 02:26:33,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 193 states have (on average 1.0362694300518134) internal successors, (200), 197 states have internal predecessors, (200), 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) [2022-10-16 02:26:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 206 transitions. [2022-10-16 02:26:33,950 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 206 transitions. Word has length 99 [2022-10-16 02:26:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:33,951 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 206 transitions. [2022-10-16 02:26:33,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 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) [2022-10-16 02:26:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 206 transitions. [2022-10-16 02:26:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-10-16 02:26:33,954 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:33,954 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:33,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:34,167 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 [2022-10-16 02:26:34,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sumErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:34,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1444998625, now seen corresponding path program 3 times [2022-10-16 02:26:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:34,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868125713] [2022-10-16 02:26:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2022-10-16 02:26:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:35,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868125713] [2022-10-16 02:26:35,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868125713] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:35,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648922642] [2022-10-16 02:26:35,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 02:26:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:35,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:35,018 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) [2022-10-16 02:26:35,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 02:26:35,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 02:26:35,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:26:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 02:26:35,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:35,130 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 [2022-10-16 02:26:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3160 trivial. 0 not checked. [2022-10-16 02:26:35,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 02:26:35,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648922642] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:35,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 02:26:35,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-10-16 02:26:35,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80058239] [2022-10-16 02:26:35,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:35,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 02:26:35,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 02:26:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-16 02:26:35,762 INFO L87 Difference]: Start difference. First operand 202 states and 206 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-10-16 02:26:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:35,864 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2022-10-16 02:26:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 02:26:35,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 171 [2022-10-16 02:26:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:35,866 INFO L225 Difference]: With dead ends: 203 [2022-10-16 02:26:35,866 INFO L226 Difference]: Without dead ends: 203 [2022-10-16 02:26:35,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-16 02:26:35,868 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:35,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-16 02:26:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2022-10-16 02:26:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 192 states have (on average 1.03125) internal successors, (198), 195 states have internal predecessors, (198), 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) [2022-10-16 02:26:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 204 transitions. [2022-10-16 02:26:35,877 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 204 transitions. Word has length 171 [2022-10-16 02:26:35,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:35,881 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 204 transitions. [2022-10-16 02:26:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-10-16 02:26:35,881 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 204 transitions. [2022-10-16 02:26:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-10-16 02:26:35,887 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:35,887 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:35,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:36,102 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 [2022-10-16 02:26:36,103 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2122417284, now seen corresponding path program 1 times [2022-10-16 02:26:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:36,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386437649] [2022-10-16 02:26:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:36,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-10-16 02:26:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3162 trivial. 0 not checked. [2022-10-16 02:26:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386437649] [2022-10-16 02:26:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386437649] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608319611] [2022-10-16 02:26:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:36,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:36,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:36,442 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) [2022-10-16 02:26:36,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 02:26:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:36,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 02:26:36,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3164 trivial. 0 not checked. [2022-10-16 02:26:36,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3173 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3162 trivial. 0 not checked. [2022-10-16 02:26:36,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608319611] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:36,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:36,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-16 02:26:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783682046] [2022-10-16 02:26:36,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:36,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 02:26:36,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 02:26:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:26:36,704 INFO L87 Difference]: Start difference. First operand 200 states and 204 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2022-10-16 02:26:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:36,725 INFO L93 Difference]: Finished difference Result 212 states and 216 transitions. [2022-10-16 02:26:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 02:26:36,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 195 [2022-10-16 02:26:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:36,729 INFO L225 Difference]: With dead ends: 212 [2022-10-16 02:26:36,729 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 02:26:36,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:26:36,731 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:36,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 126 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:26:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 02:26:36,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-10-16 02:26:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 204 states have (on average 1.0294117647058822) internal successors, (210), 207 states have internal predecessors, (210), 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) [2022-10-16 02:26:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 216 transitions. [2022-10-16 02:26:36,743 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 216 transitions. Word has length 195 [2022-10-16 02:26:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:36,744 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 216 transitions. [2022-10-16 02:26:36,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2022-10-16 02:26:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 216 transitions. [2022-10-16 02:26:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-10-16 02:26:36,749 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:36,749 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:26:36,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:36,963 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 [2022-10-16 02:26:36,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1540844380, now seen corresponding path program 2 times [2022-10-16 02:26:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645113151] [2022-10-16 02:26:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-10-16 02:26:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3293 trivial. 0 not checked. [2022-10-16 02:26:37,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645113151] [2022-10-16 02:26:37,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645113151] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:26:37,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:26:37,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:26:37,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911988434] [2022-10-16 02:26:37,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:26:37,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:26:37,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:37,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:26:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:26:37,454 INFO L87 Difference]: Start difference. First operand 212 states and 216 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 02:26:37,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:37,497 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2022-10-16 02:26:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 02:26:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 219 [2022-10-16 02:26:37,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:37,502 INFO L225 Difference]: With dead ends: 217 [2022-10-16 02:26:37,502 INFO L226 Difference]: Without dead ends: 217 [2022-10-16 02:26:37,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:26:37,503 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:37,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 55 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:26:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-10-16 02:26:37,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-10-16 02:26:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 207 states have (on average 1.0289855072463767) internal successors, (213), 210 states have internal predecessors, (213), 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) [2022-10-16 02:26:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 219 transitions. [2022-10-16 02:26:37,512 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 219 transitions. Word has length 219 [2022-10-16 02:26:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:37,514 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 219 transitions. [2022-10-16 02:26:37,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 02:26:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 219 transitions. [2022-10-16 02:26:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-10-16 02:26:37,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:37,517 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 8, 8, 8, 8, 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] [2022-10-16 02:26:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 02:26:37,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:37,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1515401408, now seen corresponding path program 1 times [2022-10-16 02:26:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:37,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329874554] [2022-10-16 02:26:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-10-16 02:26:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3293 trivial. 0 not checked. [2022-10-16 02:26:38,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:38,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329874554] [2022-10-16 02:26:38,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329874554] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:38,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714225792] [2022-10-16 02:26:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:38,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:38,328 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) [2022-10-16 02:26:38,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 02:26:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:38,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 02:26:38,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 3193 trivial. 0 not checked. [2022-10-16 02:26:38,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3295 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 3191 trivial. 0 not checked. [2022-10-16 02:26:38,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714225792] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:38,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:38,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-10-16 02:26:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162059356] [2022-10-16 02:26:38,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:38,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 02:26:38,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 02:26:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-10-16 02:26:38,763 INFO L87 Difference]: Start difference. First operand 215 states and 219 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:26:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:38,883 INFO L93 Difference]: Finished difference Result 240 states and 244 transitions. [2022-10-16 02:26:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 02:26:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 224 [2022-10-16 02:26:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:38,886 INFO L225 Difference]: With dead ends: 240 [2022-10-16 02:26:38,886 INFO L226 Difference]: Without dead ends: 240 [2022-10-16 02:26:38,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-10-16 02:26:38,888 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 49 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:38,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 128 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:38,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-10-16 02:26:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-10-16 02:26:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 234 states have (on average 1.017094017094017) internal successors, (238), 235 states have internal predecessors, (238), 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) [2022-10-16 02:26:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 244 transitions. [2022-10-16 02:26:38,898 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 244 transitions. Word has length 224 [2022-10-16 02:26:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:38,899 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 244 transitions. [2022-10-16 02:26:38,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:26:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 244 transitions. [2022-10-16 02:26:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-10-16 02:26:38,907 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:38,907 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 30, 30, 30, 30, 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, 1] [2022-10-16 02:26:38,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:39,120 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,SelfDestructingSolverStorable11 [2022-10-16 02:26:39,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:39,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1768191805, now seen corresponding path program 1 times [2022-10-16 02:26:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:39,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169238977] [2022-10-16 02:26:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:39,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-10-16 02:26:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-10-16 02:26:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5012 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 3974 trivial. 0 not checked. [2022-10-16 02:26:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:40,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169238977] [2022-10-16 02:26:40,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169238977] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:40,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963653246] [2022-10-16 02:26:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:40,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:40,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:40,020 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) [2022-10-16 02:26:40,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 02:26:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:40,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 02:26:40,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5012 backedges. 844 proven. 190 refuted. 0 times theorem prover too weak. 3978 trivial. 0 not checked. [2022-10-16 02:26:40,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5012 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 3974 trivial. 0 not checked. [2022-10-16 02:26:40,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963653246] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:40,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:40,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2022-10-16 02:26:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613098779] [2022-10-16 02:26:40,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 02:26:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 02:26:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-10-16 02:26:40,558 INFO L87 Difference]: Start difference. First operand 240 states and 244 transitions. Second operand has 24 states, 24 states have (on average 5.291666666666667) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:26:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:40,661 INFO L93 Difference]: Finished difference Result 288 states and 292 transitions. [2022-10-16 02:26:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 02:26:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.291666666666667) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 326 [2022-10-16 02:26:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:40,663 INFO L225 Difference]: With dead ends: 288 [2022-10-16 02:26:40,663 INFO L226 Difference]: Without dead ends: 288 [2022-10-16 02:26:40,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-10-16 02:26:40,665 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:40,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 252 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-16 02:26:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-10-16 02:26:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 283 states have internal predecessors, (286), 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) [2022-10-16 02:26:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 292 transitions. [2022-10-16 02:26:40,673 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 292 transitions. Word has length 326 [2022-10-16 02:26:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 292 transitions. [2022-10-16 02:26:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.291666666666667) internal successors, (127), 24 states have internal predecessors, (127), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:26:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 292 transitions. [2022-10-16 02:26:40,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-10-16 02:26:40,683 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:40,684 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 66, 40, 40, 40, 40, 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, 1] [2022-10-16 02:26:40,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:40,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 02:26:40,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1803994465, now seen corresponding path program 2 times [2022-10-16 02:26:40,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:40,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606853400] [2022-10-16 02:26:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-10-16 02:26:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-10-16 02:26:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11960 backedges. 0 proven. 4914 refuted. 0 times theorem prover too weak. 7046 trivial. 0 not checked. [2022-10-16 02:26:42,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:42,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606853400] [2022-10-16 02:26:42,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606853400] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182045848] [2022-10-16 02:26:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:26:42,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:42,909 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:26:42,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 02:26:43,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:26:43,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:26:43,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1483 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 02:26:43,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11960 backedges. 3964 proven. 946 refuted. 0 times theorem prover too weak. 7050 trivial. 0 not checked. [2022-10-16 02:26:43,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11960 backedges. 0 proven. 4914 refuted. 0 times theorem prover too weak. 7046 trivial. 0 not checked. [2022-10-16 02:26:44,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182045848] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:44,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:44,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 42 [2022-10-16 02:26:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678846252] [2022-10-16 02:26:44,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:44,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 02:26:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 02:26:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 02:26:44,097 INFO L87 Difference]: Start difference. First operand 288 states and 292 transitions. Second operand has 42 states, 42 states have (on average 4.833333333333333) internal successors, (203), 42 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:26:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:44,265 INFO L93 Difference]: Finished difference Result 360 states and 364 transitions. [2022-10-16 02:26:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 02:26:44,266 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.833333333333333) internal successors, (203), 42 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 470 [2022-10-16 02:26:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:44,269 INFO L225 Difference]: With dead ends: 360 [2022-10-16 02:26:44,269 INFO L226 Difference]: Without dead ends: 360 [2022-10-16 02:26:44,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 923 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 02:26:44,271 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:44,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 308 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:26:44,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-10-16 02:26:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-10-16 02:26:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 354 states have (on average 1.0112994350282485) internal successors, (358), 355 states have internal predecessors, (358), 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) [2022-10-16 02:26:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 364 transitions. [2022-10-16 02:26:44,281 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 364 transitions. Word has length 470 [2022-10-16 02:26:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:44,282 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 364 transitions. [2022-10-16 02:26:44,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.833333333333333) internal successors, (203), 42 states have internal predecessors, (203), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 02:26:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 364 transitions. [2022-10-16 02:26:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-10-16 02:26:44,303 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:44,304 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 40, 40, 40, 40, 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, 1] [2022-10-16 02:26:44,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:44,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 02:26:44,518 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1447725975, now seen corresponding path program 3 times [2022-10-16 02:26:44,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:44,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954833561] [2022-10-16 02:26:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:45,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-10-16 02:26:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:45,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2022-10-16 02:26:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 32102 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32095 trivial. 0 not checked. [2022-10-16 02:26:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:45,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954833561] [2022-10-16 02:26:45,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954833561] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:45,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359090827] [2022-10-16 02:26:45,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 02:26:45,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:45,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:45,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:26:45,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 02:26:45,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-16 02:26:45,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:26:45,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 02:26:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:26:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 32102 backedges. 12970 proven. 7 refuted. 0 times theorem prover too weak. 19125 trivial. 0 not checked. [2022-10-16 02:26:45,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:26:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 32102 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32095 trivial. 0 not checked. [2022-10-16 02:26:45,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359090827] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:26:45,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:26:45,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-16 02:26:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769394604] [2022-10-16 02:26:45,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:26:45,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 02:26:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:26:45,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 02:26:45,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 02:26:45,790 INFO L87 Difference]: Start difference. First operand 360 states and 364 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2022-10-16 02:26:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:26:45,826 INFO L93 Difference]: Finished difference Result 380 states and 384 transitions. [2022-10-16 02:26:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:26:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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 686 [2022-10-16 02:26:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:26:45,830 INFO L225 Difference]: With dead ends: 380 [2022-10-16 02:26:45,830 INFO L226 Difference]: Without dead ends: 380 [2022-10-16 02:26:45,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1381 GetRequests, 1374 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-16 02:26:45,831 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 36 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:26:45,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:26:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-10-16 02:26:45,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2022-10-16 02:26:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 374 states have (on average 1.0106951871657754) internal successors, (378), 375 states have internal predecessors, (378), 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) [2022-10-16 02:26:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 384 transitions. [2022-10-16 02:26:45,842 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 384 transitions. Word has length 686 [2022-10-16 02:26:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:26:45,843 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 384 transitions. [2022-10-16 02:26:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2022-10-16 02:26:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 384 transitions. [2022-10-16 02:26:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2022-10-16 02:26:45,864 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:26:45,864 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 40, 40, 40, 40, 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, 1] [2022-10-16 02:26:45,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 02:26:46,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 02:26:46,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:26:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:26:46,079 INFO L85 PathProgramCache]: Analyzing trace with hash 203429737, now seen corresponding path program 4 times [2022-10-16 02:26:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:26:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140125617] [2022-10-16 02:26:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:26:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:26:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:26:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-10-16 02:26:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2022-10-16 02:26:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:26:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32176 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 32095 trivial. 0 not checked. [2022-10-16 02:26:47,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:26:47,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140125617] [2022-10-16 02:26:47,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140125617] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:26:47,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564059555] [2022-10-16 02:26:47,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 02:26:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:26:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:26:47,121 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:26:47,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 02:27:27,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 02:27:27,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:27:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 02:27:27,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:27:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 32176 backedges. 12970 proven. 81 refuted. 0 times theorem prover too weak. 19125 trivial. 0 not checked. [2022-10-16 02:27:27,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:27:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 32176 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 32095 trivial. 0 not checked. [2022-10-16 02:27:28,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564059555] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:27:28,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:27:28,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-16 02:27:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782546867] [2022-10-16 02:27:28,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:27:28,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 02:27:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:27:28,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 02:27:28,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-16 02:27:28,102 INFO L87 Difference]: Start difference. First operand 380 states and 384 transitions. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 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) [2022-10-16 02:27:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:27:28,177 INFO L93 Difference]: Finished difference Result 420 states and 424 transitions. [2022-10-16 02:27:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 02:27:28,178 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 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 706 [2022-10-16 02:27:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:27:28,181 INFO L225 Difference]: With dead ends: 420 [2022-10-16 02:27:28,181 INFO L226 Difference]: Without dead ends: 420 [2022-10-16 02:27:28,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1425 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-16 02:27:28,183 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 56 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:27:28,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 197 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:27:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-10-16 02:27:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2022-10-16 02:27:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 414 states have (on average 1.0096618357487923) internal successors, (418), 415 states have internal predecessors, (418), 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) [2022-10-16 02:27:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 424 transitions. [2022-10-16 02:27:28,194 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 424 transitions. Word has length 706 [2022-10-16 02:27:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:27:28,195 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 424 transitions. [2022-10-16 02:27:28,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 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) [2022-10-16 02:27:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 424 transitions. [2022-10-16 02:27:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2022-10-16 02:27:28,202 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:27:28,202 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 40, 40, 40, 40, 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, 1] [2022-10-16 02:27:28,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 02:27:28,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 02:27:28,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-16 02:27:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:27:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1515790999, now seen corresponding path program 5 times [2022-10-16 02:27:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:27:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724227523] [2022-10-16 02:27:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:27:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:27:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:27:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-10-16 02:27:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:27:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-10-16 02:27:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:27:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2022-10-16 02:27:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:27:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 32564 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 32095 trivial. 0 not checked. [2022-10-16 02:27:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:27:30,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724227523] [2022-10-16 02:27:30,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724227523] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:27:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340945912] [2022-10-16 02:27:30,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 02:27:30,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:27:30,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:27:30,120 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:27:30,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process