/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/sep20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:15:46,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:15:46,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:15:46,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:15:46,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:15:46,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:15:46,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:15:46,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:15:46,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:15:46,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:15:46,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:15:46,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:15:46,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:15:46,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:15:46,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:15:46,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:15:46,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:15:46,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:15:46,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:15:46,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:15:46,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:15:46,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:15:46,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:15:46,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:15:46,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:15:46,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:15:46,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:15:46,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:15:46,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:15:46,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:15:46,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:15:46,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:15:46,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:15:46,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:15:46,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:15:46,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:15:46,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:15:46,897 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:15:46,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:15:46,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:15:46,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:15:46,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:15:46,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:15:46,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:15:46,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:15:46,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:15:46,900 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:15:46,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:15:46,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:15:46,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:15:46,901 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:15:46,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:15:46,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:15:46,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:15:46,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:46,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:15:46,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:15:46,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:15:46,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:15:46,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:15:47,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:15:47,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:15:47,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:15:47,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:15:47,368 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:15:47,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep20-2.i [2022-10-15 17:15:47,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d75b3a5/78c46673f10a4466b9cfd7852daab3ec/FLAG109e865b3 [2022-10-15 17:15:48,134 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:15:48,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep20-2.i [2022-10-15 17:15:48,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d75b3a5/78c46673f10a4466b9cfd7852daab3ec/FLAG109e865b3 [2022-10-15 17:15:48,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2d75b3a5/78c46673f10a4466b9cfd7852daab3ec [2022-10-15 17:15:48,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:15:48,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:15:48,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:48,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:15:48,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:15:48,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b24dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48, skipping insertion in model container [2022-10-15 17:15:48,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:15:48,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:15:48,860 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep20-2.i[1183,1196] [2022-10-15 17:15:48,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:48,877 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:15:48,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep20-2.i[1183,1196] [2022-10-15 17:15:48,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:15:48,920 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:15:48,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48 WrapperNode [2022-10-15 17:15:48,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:15:48,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:48,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:15:48,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:15:48,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,968 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:15:48,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:15:48,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:15:48,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:15:48,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:15:48,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:48,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:49,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:15:49,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:15:49,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:15:49,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:15:49,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (1/1) ... [2022-10-15 17:15:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:15:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:49,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:15:49,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:15:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:15:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:15:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:15:49,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:15:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:15:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:15:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:15:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:15:49,120 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-10-15 17:15:49,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-10-15 17:15:49,197 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:15:49,199 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:15:49,577 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:15:49,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:15:49,592 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:15:49,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:49 BoogieIcfgContainer [2022-10-15 17:15:49,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:15:49,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:15:49,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:15:49,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:15:49,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:15:48" (1/3) ... [2022-10-15 17:15:49,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585ebffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:49, skipping insertion in model container [2022-10-15 17:15:49,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:15:48" (2/3) ... [2022-10-15 17:15:49,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585ebffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:15:49, skipping insertion in model container [2022-10-15 17:15:49,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:15:49" (3/3) ... [2022-10-15 17:15:49,612 INFO L112 eAbstractionObserver]: Analyzing ICFG sep20-2.i [2022-10-15 17:15:49,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:15:49,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 17:15:49,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:15:49,722 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;@141f81e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:15:49,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 17:15:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:15:49,737 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:49,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:15:49,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sepErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 892005357, now seen corresponding path program 1 times [2022-10-15 17:15:49,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:49,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365614353] [2022-10-15 17:15:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:50,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:50,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365614353] [2022-10-15 17:15:50,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365614353] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:50,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:50,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:50,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467813556] [2022-10-15 17:15:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:50,296 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:50,452 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-10-15 17:15:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:15:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:50,466 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:15:50,466 INFO L226 Difference]: Without dead ends: 45 [2022-10-15 17:15:50,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:50,474 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:50,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 64 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-15 17:15:50,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-15 17:15:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-10-15 17:15:50,523 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 6 [2022-10-15 17:15:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:50,524 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-10-15 17:15:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-10-15 17:15:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:15:50,525 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:50,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:15:50,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:15:50,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash 892005358, now seen corresponding path program 1 times [2022-10-15 17:15:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:50,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580063286] [2022-10-15 17:15:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:50,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:50,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580063286] [2022-10-15 17:15:50,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580063286] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:50,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:50,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:15:50,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252552753] [2022-10-15 17:15:50,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:50,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:15:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:15:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:15:50,809 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:50,922 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-15 17:15:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:15:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:15:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:50,924 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:15:50,924 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:15:50,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:15:50,927 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:50,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:15:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-15 17:15:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-10-15 17:15:50,936 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-10-15 17:15:50,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:50,937 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-10-15 17:15:50,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-10-15 17:15:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:15:50,938 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:50,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:15:50,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:50,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1931522189, now seen corresponding path program 1 times [2022-10-15 17:15:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:50,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774513358] [2022-10-15 17:15:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:50,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:51,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774513358] [2022-10-15 17:15:51,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774513358] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226537821] [2022-10-15 17:15:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:51,170 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:51,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:15:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:51,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:15:51,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:51,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:51,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:51,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226537821] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:51,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:51,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:15:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847019435] [2022-10-15 17:15:51,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:51,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:15:51,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:15:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:15:51,627 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:51,905 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2022-10-15 17:15:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:15:51,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:15:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:51,909 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:15:51,924 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:15:51,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:15:51,927 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 109 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:51,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 127 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:15:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:15:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-15 17:15:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-10-15 17:15:51,941 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 10 [2022-10-15 17:15:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:51,942 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-10-15 17:15:51,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:51,942 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-10-15 17:15:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:15:51,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:51,944 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:15:51,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:52,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:52,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1182120706, now seen corresponding path program 2 times [2022-10-15 17:15:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:52,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026754721] [2022-10-15 17:15:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:52,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026754721] [2022-10-15 17:15:52,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026754721] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:52,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965007668] [2022-10-15 17:15:52,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:52,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:52,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:52,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:15:52,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:15:52,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:52,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 17:15:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:52,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:52,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:53,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965007668] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:53,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:53,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-10-15 17:15:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542747284] [2022-10-15 17:15:53,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 17:15:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 17:15:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:15:53,191 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:53,784 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2022-10-15 17:15:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 17:15:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-15 17:15:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:53,787 INFO L225 Difference]: With dead ends: 92 [2022-10-15 17:15:53,787 INFO L226 Difference]: Without dead ends: 92 [2022-10-15 17:15:53,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2022-10-15 17:15:53,790 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 272 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:53,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 220 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:15:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-15 17:15:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2022-10-15 17:15:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 72 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2022-10-15 17:15:53,804 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 22 [2022-10-15 17:15:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2022-10-15 17:15:53,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2022-10-15 17:15:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 17:15:53,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:53,807 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2022-10-15 17:15:53,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:15:54,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 750040736, now seen corresponding path program 3 times [2022-10-15 17:15:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:54,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966742782] [2022-10-15 17:15:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 162 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:15:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966742782] [2022-10-15 17:15:54,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966742782] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544326339] [2022-10-15 17:15:54,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:15:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:54,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:54,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:15:54,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 17:15:54,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:15:54,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 17:15:54,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:54,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-10-15 17:15:55,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:15:55,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544326339] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:55,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:15:55,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2022-10-15 17:15:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752360650] [2022-10-15 17:15:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:55,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:15:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:15:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:15:55,090 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:55,229 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-10-15 17:15:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:15:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-15 17:15:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:55,232 INFO L225 Difference]: With dead ends: 76 [2022-10-15 17:15:55,232 INFO L226 Difference]: Without dead ends: 76 [2022-10-15 17:15:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2022-10-15 17:15:55,234 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:55,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 82 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-15 17:15:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 55. [2022-10-15 17:15:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 50 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-10-15 17:15:55,243 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 46 [2022-10-15 17:15:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:55,244 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-10-15 17:15:55,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:15:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-10-15 17:15:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 17:15:55,246 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:55,246 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:55,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:55,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -841571502, now seen corresponding path program 1 times [2022-10-15 17:15:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:55,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76239824] [2022-10-15 17:15:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 17:15:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-15 17:15:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76239824] [2022-10-15 17:15:55,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76239824] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:55,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:55,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:15:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551282944] [2022-10-15 17:15:55,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:15:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:15:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:15:55,929 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:15:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:55,973 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-10-15 17:15:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:15:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-10-15 17:15:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:55,975 INFO L225 Difference]: With dead ends: 60 [2022-10-15 17:15:55,975 INFO L226 Difference]: Without dead ends: 60 [2022-10-15 17:15:55,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:15:55,976 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:55,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-15 17:15:55,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-10-15 17:15:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.2) internal successors, (60), 53 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-10-15 17:15:55,983 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 66 [2022-10-15 17:15:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:55,984 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-10-15 17:15:55,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:15:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-10-15 17:15:55,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-15 17:15:55,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:55,987 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:55,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:15:55,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:55,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:55,988 INFO L85 PathProgramCache]: Analyzing trace with hash 409507129, now seen corresponding path program 1 times [2022-10-15 17:15:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:55,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419679816] [2022-10-15 17:15:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:55,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 17:15:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-15 17:15:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:56,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419679816] [2022-10-15 17:15:56,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419679816] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:56,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862039445] [2022-10-15 17:15:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:56,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:56,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:56,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:56,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:15:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:56,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 17:15:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 112 proven. 45 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-15 17:15:56,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-15 17:15:56,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862039445] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:56,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:56,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 18 [2022-10-15 17:15:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775885921] [2022-10-15 17:15:56,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:56,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 17:15:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 17:15:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:15:56,710 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:15:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:56,883 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2022-10-15 17:15:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:15:56,884 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 71 [2022-10-15 17:15:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:56,885 INFO L225 Difference]: With dead ends: 87 [2022-10-15 17:15:56,886 INFO L226 Difference]: Without dead ends: 87 [2022-10-15 17:15:56,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:15:56,890 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:56,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 213 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-15 17:15:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-10-15 17:15:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 82 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-10-15 17:15:56,920 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 71 [2022-10-15 17:15:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:56,920 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-10-15 17:15:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:15:56,921 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-10-15 17:15:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-10-15 17:15:56,927 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:56,927 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:56,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:57,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:57,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:57,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1145386274, now seen corresponding path program 1 times [2022-10-15 17:15:57,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:57,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270396636] [2022-10-15 17:15:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-15 17:15:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-10-15 17:15:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 0 proven. 1484 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2022-10-15 17:15:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:58,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270396636] [2022-10-15 17:15:58,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270396636] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:58,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455397949] [2022-10-15 17:15:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:58,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:58,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:58,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:58,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:15:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:58,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 17:15:58,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 1204 proven. 276 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2022-10-15 17:15:58,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 0 proven. 1484 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2022-10-15 17:15:58,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455397949] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:58,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:58,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2022-10-15 17:15:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095269621] [2022-10-15 17:15:58,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-15 17:15:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-15 17:15:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:15:58,903 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:58,995 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2022-10-15 17:15:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 17:15:58,996 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-10-15 17:15:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:58,998 INFO L225 Difference]: With dead ends: 119 [2022-10-15 17:15:58,998 INFO L226 Difference]: Without dead ends: 119 [2022-10-15 17:15:58,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 371 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:15:59,000 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:59,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 141 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-10-15 17:15:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-10-15 17:15:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 114 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2022-10-15 17:15:59,009 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 189 [2022-10-15 17:15:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:59,010 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2022-10-15 17:15:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.363636363636363) internal successors, (118), 22 states have internal predecessors, (118), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:15:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2022-10-15 17:15:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-10-15 17:15:59,019 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:59,019 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:15:59,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:59,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:15:59,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1816008374, now seen corresponding path program 2 times [2022-10-15 17:15:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:59,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494110674] [2022-10-15 17:15:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:15:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:15:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-10-15 17:15:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:15:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:59,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494110674] [2022-10-15 17:15:59,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494110674] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:59,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740704081] [2022-10-15 17:15:59,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:15:59,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:59,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:59,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:16:00,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:16:00,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:00,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:16:00,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 3290 proven. 7 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:16:00,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7282 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:16:00,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740704081] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:00,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:00,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 17:16:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739887504] [2022-10-15 17:16:00,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:00,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:16:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:16:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:16:00,253 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:00,296 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2022-10-15 17:16:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:16:00,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 285 [2022-10-15 17:16:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:00,299 INFO L225 Difference]: With dead ends: 139 [2022-10-15 17:16:00,299 INFO L226 Difference]: Without dead ends: 139 [2022-10-15 17:16:00,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:16:00,300 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:00,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:16:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-15 17:16:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-10-15 17:16:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 133 states have (on average 1.1729323308270676) internal successors, (156), 134 states have internal predecessors, (156), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2022-10-15 17:16:00,308 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 285 [2022-10-15 17:16:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:00,309 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2022-10-15 17:16:00,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2022-10-15 17:16:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-10-15 17:16:00,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:00,315 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:00,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:00,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:00,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:00,530 INFO L85 PathProgramCache]: Analyzing trace with hash -455903754, now seen corresponding path program 3 times [2022-10-15 17:16:00,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:00,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863576819] [2022-10-15 17:16:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:00,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:16:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-10-15 17:16:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:16:01,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:01,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863576819] [2022-10-15 17:16:01,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863576819] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335651630] [2022-10-15 17:16:01,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:16:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:01,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:16:01,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:16:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-15 17:16:01,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:01,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:16:01,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 3290 proven. 81 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:16:01,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7356 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:16:01,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335651630] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:01,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:01,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:16:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264352409] [2022-10-15 17:16:01,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:01,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:16:01,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:01,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:16:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:16:01,850 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:01,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:01,936 INFO L93 Difference]: Finished difference Result 179 states and 202 transitions. [2022-10-15 17:16:01,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:16:01,937 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 305 [2022-10-15 17:16:01,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:01,939 INFO L225 Difference]: With dead ends: 179 [2022-10-15 17:16:01,939 INFO L226 Difference]: Without dead ends: 179 [2022-10-15 17:16:01,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:16:01,940 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:01,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 209 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-10-15 17:16:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-10-15 17:16:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.1329479768786128) internal successors, (196), 174 states have internal predecessors, (196), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2022-10-15 17:16:01,948 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 305 [2022-10-15 17:16:01,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:01,949 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2022-10-15 17:16:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2022-10-15 17:16:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-10-15 17:16:01,955 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:01,956 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:02,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:02,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:02,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:02,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:02,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1104532598, now seen corresponding path program 4 times [2022-10-15 17:16:02,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:02,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852685965] [2022-10-15 17:16:02,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:02,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:03,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:16:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-10-15 17:16:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:16:03,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852685965] [2022-10-15 17:16:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852685965] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:03,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295383689] [2022-10-15 17:16:03,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:16:03,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:03,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:16:03,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:16:04,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:16:04,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:04,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:16:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 3290 proven. 469 refuted. 0 times theorem prover too weak. 3985 trivial. 0 not checked. [2022-10-15 17:16:04,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 7275 trivial. 0 not checked. [2022-10-15 17:16:04,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295383689] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:04,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:04,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2022-10-15 17:16:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503178336] [2022-10-15 17:16:04,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-15 17:16:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-15 17:16:04,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:16:04,780 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:04,883 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2022-10-15 17:16:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 17:16:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 345 [2022-10-15 17:16:04,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:04,886 INFO L225 Difference]: With dead ends: 204 [2022-10-15 17:16:04,886 INFO L226 Difference]: Without dead ends: 204 [2022-10-15 17:16:04,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 680 SyntacticMatches, 11 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:16:04,888 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:04,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 246 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:16:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-10-15 17:16:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-10-15 17:16:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 198 states have (on average 1.1161616161616161) internal successors, (221), 199 states have internal predecessors, (221), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:16:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 227 transitions. [2022-10-15 17:16:04,897 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 227 transitions. Word has length 345 [2022-10-15 17:16:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:04,898 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 227 transitions. [2022-10-15 17:16:04,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 states have internal predecessors, (131), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:16:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 227 transitions. [2022-10-15 17:16:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-10-15 17:16:04,904 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:04,905 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 60, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:04,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:05,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 17:16:05,114 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -207607121, now seen corresponding path program 5 times [2022-10-15 17:16:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:05,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802337996] [2022-10-15 17:16:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:16:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-15 17:16:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-10-15 17:16:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:16:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8149 backedges. 0 proven. 7020 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2022-10-15 17:16:19,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:16:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802337996] [2022-10-15 17:16:19,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802337996] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:16:19,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769038524] [2022-10-15 17:16:19,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:16:19,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:16:19,007 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:16:19,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:16:25,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2022-10-15 17:16:25,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:16:25,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 145 conjunts are in the unsatisfiable core [2022-10-15 17:16:25,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:16:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8149 backedges. 0 proven. 7020 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2022-10-15 17:16:27,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:16:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8149 backedges. 0 proven. 7020 refuted. 0 times theorem prover too weak. 1129 trivial. 0 not checked. [2022-10-15 17:16:30,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769038524] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:16:30,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:16:30,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 54 [2022-10-15 17:16:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544729957] [2022-10-15 17:16:30,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:16:30,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-15 17:16:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:16:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-15 17:16:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2728, Unknown=0, NotChecked=0, Total=2862 [2022-10-15 17:16:30,242 INFO L87 Difference]: Start difference. First operand 204 states and 227 transitions. Second operand has 54 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 50 states have internal predecessors, (192), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 17:16:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:16:32,934 INFO L93 Difference]: Finished difference Result 990 states and 1263 transitions. [2022-10-15 17:16:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-15 17:16:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 50 states have internal predecessors, (192), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 370 [2022-10-15 17:16:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:16:32,942 INFO L225 Difference]: With dead ends: 990 [2022-10-15 17:16:32,942 INFO L226 Difference]: Without dead ends: 990 [2022-10-15 17:16:32,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 751 SyntacticMatches, 13 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=182, Invalid=3600, Unknown=0, NotChecked=0, Total=3782 [2022-10-15 17:16:32,945 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 176 mSDsluCounter, 8362 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 8611 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:16:32,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 8611 Invalid, 3335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-15 17:16:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-10-15 17:16:32,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 818. [2022-10-15 17:16:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 809 states have (on average 1.203955500618047) internal successors, (974), 810 states have internal predecessors, (974), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 17:16:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 989 transitions. [2022-10-15 17:16:32,993 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 989 transitions. Word has length 370 [2022-10-15 17:16:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:16:32,994 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 989 transitions. [2022-10-15 17:16:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.6226415094339623) internal successors, (192), 50 states have internal predecessors, (192), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-15 17:16:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 989 transitions. [2022-10-15 17:16:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-10-15 17:16:33,007 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:16:33,007 INFO L195 NwaCegarLoop]: trace histogram [60, 60, 60, 59, 19, 19, 19, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:16:33,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:16:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:16:33,223 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:16:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:16:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash 472451249, now seen corresponding path program 1 times [2022-10-15 17:16:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:16:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930366053] [2022-10-15 17:16:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:16:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:16:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat