/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/array-examples/standard_palindrome_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 05:30:53,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 05:30:53,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 05:30:53,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 05:30:53,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 05:30:53,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 05:30:53,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 05:30:53,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 05:30:53,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 05:30:53,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 05:30:53,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 05:30:53,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 05:30:53,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 05:30:53,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 05:30:53,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 05:30:53,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 05:30:53,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 05:30:53,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 05:30:53,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 05:30:53,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 05:30:53,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 05:30:53,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 05:30:53,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 05:30:53,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 05:30:53,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 05:30:53,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 05:30:53,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 05:30:53,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 05:30:53,180 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 05:30:53,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 05:30:53,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 05:30:53,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 05:30:53,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 05:30:53,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 05:30:53,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 05:30:53,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 05:30:53,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 05:30:53,214 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 05:30:53,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 05:30:53,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 05:30:53,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 05:30:53,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 05:30:53,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 05:30:53,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 05:30:53,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 05:30:53,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 05:30:53,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 05:30:53,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 05:30:53,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 05:30:53,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 05:30:53,217 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 05:30:53,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 05:30:53,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 05:30:53,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 05:30:53,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:30:53,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 05:30:53,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 05:30:53,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 05:30:53,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 05:30:53,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 05:30:53,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 05:30:53,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 05:30:53,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 05:30:53,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 05:30:53,720 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 05:30:53,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_palindrome_ground.i [2022-10-16 05:30:53,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242ab7d09/f2e46dbcd61542f0aa7741289d90630f/FLAG6a4b9db6d [2022-10-16 05:30:54,448 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 05:30:54,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_palindrome_ground.i [2022-10-16 05:30:54,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242ab7d09/f2e46dbcd61542f0aa7741289d90630f/FLAG6a4b9db6d [2022-10-16 05:30:54,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/242ab7d09/f2e46dbcd61542f0aa7741289d90630f [2022-10-16 05:30:54,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 05:30:54,805 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 05:30:54,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 05:30:54,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 05:30:54,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 05:30:54,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:30:54" (1/1) ... [2022-10-16 05:30:54,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d48063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:54, skipping insertion in model container [2022-10-16 05:30:54,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:30:54" (1/1) ... [2022-10-16 05:30:54,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 05:30:54,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 05:30:54,998 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/array-examples/standard_palindrome_ground.i[819,832] [2022-10-16 05:30:55,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:30:55,028 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 05:30:55,043 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/array-examples/standard_palindrome_ground.i[819,832] [2022-10-16 05:30:55,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:30:55,067 INFO L208 MainTranslator]: Completed translation [2022-10-16 05:30:55,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55 WrapperNode [2022-10-16 05:30:55,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 05:30:55,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 05:30:55,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 05:30:55,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 05:30:55,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,111 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-10-16 05:30:55,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 05:30:55,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 05:30:55,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 05:30:55,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 05:30:55,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 05:30:55,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 05:30:55,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 05:30:55,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 05:30:55,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (1/1) ... [2022-10-16 05:30:55,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:30:55,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:30:55,184 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 05:30:55,204 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 05:30:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 05:30:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 05:30:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 05:30:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 05:30:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 05:30:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 05:30:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 05:30:55,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 05:30:55,335 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 05:30:55,338 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 05:30:55,565 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 05:30:55,573 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 05:30:55,574 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 05:30:55,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:30:55 BoogieIcfgContainer [2022-10-16 05:30:55,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 05:30:55,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 05:30:55,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 05:30:55,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 05:30:55,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:30:54" (1/3) ... [2022-10-16 05:30:55,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656b056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:30:55, skipping insertion in model container [2022-10-16 05:30:55,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:30:55" (2/3) ... [2022-10-16 05:30:55,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1656b056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:30:55, skipping insertion in model container [2022-10-16 05:30:55,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:30:55" (3/3) ... [2022-10-16 05:30:55,588 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_palindrome_ground.i [2022-10-16 05:30:55,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 05:30:55,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 05:30:55,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 05:30:55,779 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;@1de302d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 05:30:55,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 05:30:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 36 states have internal predecessors, (43), 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 05:30:55,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:30:55,795 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:55,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:30:55,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-16 05:30:55,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:55,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458575343] [2022-10-16 05:30:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:56,081 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 05:30:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:56,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458575343] [2022-10-16 05:30:56,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458575343] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:30:56,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:30:56,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:30:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736683743] [2022-10-16 05:30:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:30:56,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:30:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:56,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:30:56,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:30:56,167 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 36 states have internal predecessors, (43), 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) 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 05:30:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:30:56,281 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-10-16 05:30:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:30:56,285 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 05:30:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:30:56,297 INFO L225 Difference]: With dead ends: 32 [2022-10-16 05:30:56,297 INFO L226 Difference]: Without dead ends: 30 [2022-10-16 05:30:56,301 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 05:30:56,308 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:30:56,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:30:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-16 05:30:56,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-10-16 05:30:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.391304347826087) internal successors, (32), 29 states have internal predecessors, (32), 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 05:30:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-10-16 05:30:56,363 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 4 [2022-10-16 05:30:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:30:56,365 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-10-16 05:30:56,366 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 05:30:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-10-16 05:30:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:30:56,368 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:56,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:30:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 05:30:56,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:56,373 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-16 05:30:56,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:56,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388986921] [2022-10-16 05:30:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:56,636 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 05:30:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388986921] [2022-10-16 05:30:56,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388986921] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:30:56,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:30:56,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:30:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444479497] [2022-10-16 05:30:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:30:56,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:30:56,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:30:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:30:56,642 INFO L87 Difference]: Start difference. First operand 30 states and 32 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 05:30:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:30:56,690 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-10-16 05:30:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:30:56,691 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 05:30:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:30:56,692 INFO L225 Difference]: With dead ends: 34 [2022-10-16 05:30:56,692 INFO L226 Difference]: Without dead ends: 34 [2022-10-16 05:30:56,693 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 05:30:56,695 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:30:56,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:30:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-16 05:30:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-10-16 05:30:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 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 05:30:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-10-16 05:30:56,703 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 4 [2022-10-16 05:30:56,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:30:56,703 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-10-16 05:30:56,704 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 05:30:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-10-16 05:30:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 05:30:56,704 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:56,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-16 05:30:56,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 05:30:56,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:56,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-10-16 05:30:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:56,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473682704] [2022-10-16 05:30:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:56,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:56,914 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 05:30:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:56,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473682704] [2022-10-16 05:30:56,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473682704] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:30:56,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298605380] [2022-10-16 05:30:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:56,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:30:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:30:56,922 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 05:30:56,945 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 05:30:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:56,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 05:30:56,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:30:57,088 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 05:30:57,180 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 05:30:57,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:30:57,316 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 05:30:57,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298605380] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:30:57,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:30:57,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-16 05:30:57,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792953575] [2022-10-16 05:30:57,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:30:57,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 05:30:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:57,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 05:30:57,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 05:30:57,321 INFO L87 Difference]: Start difference. First operand 32 states and 34 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 05:30:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:30:57,570 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2022-10-16 05:30:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 05:30:57,571 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 05:30:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:30:57,573 INFO L225 Difference]: With dead ends: 64 [2022-10-16 05:30:57,573 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 05:30:57,574 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 05:30:57,576 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 172 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 05:30:57,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 56 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 05:30:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 05:30:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2022-10-16 05:30:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 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 05:30:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2022-10-16 05:30:57,586 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 8 [2022-10-16 05:30:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:30:57,586 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2022-10-16 05:30:57,587 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 05:30:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2022-10-16 05:30:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 05:30:57,588 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:57,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:30:57,631 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 05:30:57,803 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 05:30:57,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1876003795, now seen corresponding path program 1 times [2022-10-16 05:30:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:57,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071786166] [2022-10-16 05:30:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-10-16 05:30:58,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:58,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071786166] [2022-10-16 05:30:58,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071786166] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:30:58,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:30:58,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 05:30:58,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700732040] [2022-10-16 05:30:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:30:58,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:30:58,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:30:58,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:30:58,127 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 05:30:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:30:58,164 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-10-16 05:30:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:30:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 34 [2022-10-16 05:30:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:30:58,167 INFO L225 Difference]: With dead ends: 55 [2022-10-16 05:30:58,167 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 05:30:58,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:30:58,169 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:30:58,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 34 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:30:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 05:30:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-10-16 05:30:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 48 states have internal predecessors, (51), 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 05:30:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2022-10-16 05:30:58,177 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 34 [2022-10-16 05:30:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:30:58,178 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2022-10-16 05:30:58,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 05:30:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2022-10-16 05:30:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 05:30:58,180 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:58,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:30:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 05:30:58,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 776689648, now seen corresponding path program 1 times [2022-10-16 05:30:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:58,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723317473] [2022-10-16 05:30:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 05:30:58,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723317473] [2022-10-16 05:30:58,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723317473] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:30:58,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48861878] [2022-10-16 05:30:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:58,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:30:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:30:58,345 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 05:30:58,372 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 05:30:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:58,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 05:30:58,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:30:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 05:30:58,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:30:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 05:30:58,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48861878] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:30:58,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:30:58,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-16 05:30:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990392032] [2022-10-16 05:30:58,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:30:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 05:30:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 05:30:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-16 05:30:58,564 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 05:30:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:30:58,678 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2022-10-16 05:30:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 05:30:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 38 [2022-10-16 05:30:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:30:58,680 INFO L225 Difference]: With dead ends: 111 [2022-10-16 05:30:58,680 INFO L226 Difference]: Without dead ends: 111 [2022-10-16 05:30:58,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 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 05:30:58,682 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 179 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 05:30:58,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 115 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 05:30:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-16 05:30:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2022-10-16 05:30:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 87 states have internal predecessors, (90), 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 05:30:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2022-10-16 05:30:58,693 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 38 [2022-10-16 05:30:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:30:58,693 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2022-10-16 05:30:58,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 05:30:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2022-10-16 05:30:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 05:30:58,696 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:30:58,696 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:30:58,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 05:30:58,912 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 05:30:58,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:30:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:30:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash -615633399, now seen corresponding path program 2 times [2022-10-16 05:30:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:30:58,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652706508] [2022-10-16 05:30:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:30:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:30:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:30:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 05:30:59,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:30:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652706508] [2022-10-16 05:30:59,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652706508] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:30:59,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559563126] [2022-10-16 05:30:59,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 05:30:59,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:30:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:30:59,327 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 05:30:59,338 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 05:30:59,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 05:30:59,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:30:59,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 05:30:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:30:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 05:30:59,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:30:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 05:30:59,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559563126] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:30:59,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:30:59,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-16 05:30:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021336422] [2022-10-16 05:30:59,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:30:59,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 05:30:59,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:30:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 05:30:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-16 05:30:59,802 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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 05:31:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:31:00,089 INFO L93 Difference]: Finished difference Result 189 states and 192 transitions. [2022-10-16 05:31:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 05:31:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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 77 [2022-10-16 05:31:00,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:31:00,092 INFO L225 Difference]: With dead ends: 189 [2022-10-16 05:31:00,092 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 05:31:00,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 142 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 05:31:00,094 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 353 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 05:31:00,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 133 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 05:31:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 05:31:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 166. [2022-10-16 05:31:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.037037037037037) internal successors, (168), 165 states have internal predecessors, (168), 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 05:31:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2022-10-16 05:31:00,109 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 77 [2022-10-16 05:31:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:31:00,110 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2022-10-16 05:31:00,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.16) internal successors, (104), 25 states have internal predecessors, (104), 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 05:31:00,110 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2022-10-16 05:31:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-16 05:31:00,113 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:31:00,113 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:31:00,155 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 05:31:00,326 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 05:31:00,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:31:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:31:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 8799557, now seen corresponding path program 3 times [2022-10-16 05:31:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:31:00,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576762953] [2022-10-16 05:31:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:31:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:31:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:31:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2022-10-16 05:31:01,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:31:01,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576762953] [2022-10-16 05:31:01,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576762953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:31:01,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988731549] [2022-10-16 05:31:01,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 05:31:01,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:31:01,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:31:01,550 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 05:31:01,575 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 05:31:03,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-10-16 05:31:03,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:31:03,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 05:31:03,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:31:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-10-16 05:31:03,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:31:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-10-16 05:31:04,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988731549] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:31:04,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:31:04,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 38 [2022-10-16 05:31:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637777756] [2022-10-16 05:31:04,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:31:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 05:31:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:31:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 05:31:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 05:31:04,225 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 38 states, 38 states have (on average 5.921052631578948) internal successors, (225), 38 states have internal predecessors, (225), 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 05:31:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:31:04,758 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2022-10-16 05:31:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-10-16 05:31:04,760 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.921052631578948) internal successors, (225), 38 states have internal predecessors, (225), 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 155 [2022-10-16 05:31:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:31:04,763 INFO L225 Difference]: With dead ends: 341 [2022-10-16 05:31:04,763 INFO L226 Difference]: Without dead ends: 341 [2022-10-16 05:31:04,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 05:31:04,765 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 622 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 05:31:04,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 139 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 05:31:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-10-16 05:31:04,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2022-10-16 05:31:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 334 states have (on average 1.0179640718562875) internal successors, (340), 337 states have internal predecessors, (340), 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 05:31:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 340 transitions. [2022-10-16 05:31:04,794 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 340 transitions. Word has length 155 [2022-10-16 05:31:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:31:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 340 transitions. [2022-10-16 05:31:04,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.921052631578948) internal successors, (225), 38 states have internal predecessors, (225), 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 05:31:04,799 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 340 transitions. [2022-10-16 05:31:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-10-16 05:31:04,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:31:04,811 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:31:04,854 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 05:31:05,012 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 05:31:05,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:31:05,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:31:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2079391806, now seen corresponding path program 4 times [2022-10-16 05:31:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:31:05,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900095616] [2022-10-16 05:31:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:31:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:31:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:31:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5425 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2022-10-16 05:31:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:31:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900095616] [2022-10-16 05:31:08,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900095616] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:31:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264568722] [2022-10-16 05:31:08,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 05:31:08,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:31:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:31:08,282 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 05:31:08,290 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 05:31:14,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 05:31:14,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 05:31:14,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 05:31:14,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 05:31:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5425 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2022-10-16 05:31:14,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 05:31:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5425 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 3010 trivial. 0 not checked. [2022-10-16 05:31:17,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264568722] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 05:31:17,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 05:31:17,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 75 [2022-10-16 05:31:17,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763290400] [2022-10-16 05:31:17,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 05:31:17,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-10-16 05:31:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:31:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-10-16 05:31:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2022-10-16 05:31:17,032 INFO L87 Difference]: Start difference. First operand 338 states and 340 transitions. Second operand has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 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 05:31:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:31:18,278 INFO L93 Difference]: Finished difference Result 514 states and 517 transitions. [2022-10-16 05:31:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-10-16 05:31:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 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 327 [2022-10-16 05:31:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:31:18,282 INFO L225 Difference]: With dead ends: 514 [2022-10-16 05:31:18,283 INFO L226 Difference]: Without dead ends: 514 [2022-10-16 05:31:18,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2022-10-16 05:31:18,286 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1321 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 05:31:18,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 242 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 05:31:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-16 05:31:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 491. [2022-10-16 05:31:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 487 states have (on average 1.0123203285420945) internal successors, (493), 490 states have internal predecessors, (493), 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 05:31:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 493 transitions. [2022-10-16 05:31:18,317 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 493 transitions. Word has length 327 [2022-10-16 05:31:18,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:31:18,317 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 493 transitions. [2022-10-16 05:31:18,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 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 05:31:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 493 transitions. [2022-10-16 05:31:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-10-16 05:31:18,331 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:31:18,331 INFO L195 NwaCegarLoop]: trace histogram [72, 72, 72, 72, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:31:18,384 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 05:31:18,544 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 05:31:18,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-16 05:31:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:31:18,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2103887004, now seen corresponding path program 5 times [2022-10-16 05:31:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:31:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097847396] [2022-10-16 05:31:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:31:18,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:31:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:31:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13482 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 3186 trivial. 0 not checked. [2022-10-16 05:31:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:31:26,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097847396] [2022-10-16 05:31:26,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097847396] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 05:31:26,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336603996] [2022-10-16 05:31:26,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 05:31:26,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 05:31:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:31:26,465 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 05:31:26,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process