/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/loops/bubble_sort-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:18:01,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:18:01,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:18:02,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:18:02,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:18:02,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:18:02,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:18:02,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:18:02,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:18:02,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:18:02,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:18:02,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:18:02,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:18:02,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:18:02,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:18:02,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:18:02,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:18:02,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:18:02,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:18:02,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:18:02,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:18:02,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:18:02,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:18:02,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:18:02,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 18:18:02,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 18:18:02,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 18:18:02,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 18:18:02,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 18:18:02,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 18:18:02,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:18:02,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:18:02,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:18:02,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:18:02,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:18:02,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:18:02,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:18:02,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:18:02,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:18:02,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:18:02,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:18:02,116 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 18:18:02,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:18:02,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:18:02,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:18:02,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:18:02,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:18:02,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:18:02,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:18:02,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:18:02,172 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:18:02,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:18:02,172 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:18:02,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:18:02,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:18:02,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:18:02,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:18:02,173 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:18:02,173 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:18:02,174 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:18:02,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:18:02,174 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:18:02,174 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:18:02,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:18:02,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:18:02,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:18:02,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:18:02,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:18:02,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:18:02,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:18:02,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:18:02,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:18:02,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:18:02,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:18:02,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:18:02,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:18:02,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:18:02,574 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:18:02,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/bubble_sort-1.c [2022-10-15 18:18:02,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d38fb1db3/3d678d786cf64b3fbbe68d1d518eef5f/FLAG04333bded [2022-10-15 18:18:03,209 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:18:03,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/bubble_sort-1.c [2022-10-15 18:18:03,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d38fb1db3/3d678d786cf64b3fbbe68d1d518eef5f/FLAG04333bded [2022-10-15 18:18:03,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d38fb1db3/3d678d786cf64b3fbbe68d1d518eef5f [2022-10-15 18:18:03,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:18:03,592 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:18:03,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:18:03,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:18:03,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:18:03,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:03,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a0fb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03, skipping insertion in model container [2022-10-15 18:18:03,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:03,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:18:03,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:18:03,814 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/loops/bubble_sort-1.c[325,338] [2022-10-15 18:18:03,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:18:03,862 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:18:03,880 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/loops/bubble_sort-1.c[325,338] [2022-10-15 18:18:03,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:18:03,950 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:18:03,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03 WrapperNode [2022-10-15 18:18:03,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:18:03,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:18:03,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:18:03,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:18:03,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:03,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,019 INFO L138 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2022-10-15 18:18:04,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:18:04,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:18:04,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:18:04,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:18:04,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:18:04,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:18:04,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:18:04,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:18:04,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (1/1) ... [2022-10-15 18:18:04,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:18:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:04,095 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 18:18:04,111 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 18:18:04,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:18:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:18:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:18:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:18:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:18:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:18:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:18:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:18:04,249 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:18:04,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:18:04,667 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:18:04,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:18:04,675 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-15 18:18:04,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:18:04 BoogieIcfgContainer [2022-10-15 18:18:04,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:18:04,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:18:04,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:18:04,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:18:04,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:18:03" (1/3) ... [2022-10-15 18:18:04,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56eee6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:18:04, skipping insertion in model container [2022-10-15 18:18:04,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:18:03" (2/3) ... [2022-10-15 18:18:04,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56eee6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:18:04, skipping insertion in model container [2022-10-15 18:18:04,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:18:04" (3/3) ... [2022-10-15 18:18:04,687 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort-1.c [2022-10-15 18:18:04,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:18:04,708 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-10-15 18:18:04,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:18:04,770 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;@28559b5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:18:04,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-10-15 18:18:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 43 states have (on average 2.046511627906977) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 18:18:04,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:04,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 18:18:04,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:04,797 INFO L85 PathProgramCache]: Analyzing trace with hash 28698628, now seen corresponding path program 1 times [2022-10-15 18:18:04,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:04,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802332838] [2022-10-15 18:18:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:04,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:05,083 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 18:18:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802332838] [2022-10-15 18:18:05,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802332838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:05,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:05,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:18:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394539480] [2022-10-15 18:18:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:05,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:05,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,143 INFO L87 Difference]: Start difference. First operand has 71 states, 43 states have (on average 2.046511627906977) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:05,281 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-10-15 18:18:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:05,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 18:18:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:05,297 INFO L225 Difference]: With dead ends: 73 [2022-10-15 18:18:05,297 INFO L226 Difference]: Without dead ends: 69 [2022-10-15 18:18:05,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,306 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:05,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 128 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-15 18:18:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-15 18:18:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-10-15 18:18:05,368 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 5 [2022-10-15 18:18:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:05,368 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-10-15 18:18:05,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-10-15 18:18:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:18:05,370 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:05,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:18:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:18:05,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:05,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 889569448, now seen corresponding path program 1 times [2022-10-15 18:18:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:05,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302299790] [2022-10-15 18:18:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:05,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:05,461 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 18:18:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302299790] [2022-10-15 18:18:05,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302299790] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:05,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:05,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068445301] [2022-10-15 18:18:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,466 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:05,482 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-10-15 18:18:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 18:18:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:05,484 INFO L225 Difference]: With dead ends: 60 [2022-10-15 18:18:05,484 INFO L226 Difference]: Without dead ends: 60 [2022-10-15 18:18:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,487 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:05,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-15 18:18:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-10-15 18:18:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 58 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-10-15 18:18:05,495 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 6 [2022-10-15 18:18:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:05,496 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-10-15 18:18:05,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-10-15 18:18:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 18:18:05,497 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:05,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:05,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:18:05,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 195327197, now seen corresponding path program 1 times [2022-10-15 18:18:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:05,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030274718] [2022-10-15 18:18:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:05,622 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 18:18:05,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:05,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030274718] [2022-10-15 18:18:05,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030274718] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:05,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:05,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:18:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311611801] [2022-10-15 18:18:05,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:05,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:05,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,626 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:05,695 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-10-15 18:18:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:05,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 18:18:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:05,697 INFO L225 Difference]: With dead ends: 54 [2022-10-15 18:18:05,697 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 18:18:05,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:05,703 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:05,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 37 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:05,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 18:18:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-10-15 18:18:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-10-15 18:18:05,722 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 8 [2022-10-15 18:18:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:05,724 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-10-15 18:18:05,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-10-15 18:18:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 18:18:05,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:05,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:18:05,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:05,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash 195327198, now seen corresponding path program 1 times [2022-10-15 18:18:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671370687] [2022-10-15 18:18:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:05,978 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 18:18:05,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671370687] [2022-10-15 18:18:05,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671370687] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:05,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:05,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:18:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990914052] [2022-10-15 18:18:05,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:05,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:18:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:18:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:05,982 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:06,165 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2022-10-15 18:18:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:18:06,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 18:18:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:06,167 INFO L225 Difference]: With dead ends: 96 [2022-10-15 18:18:06,167 INFO L226 Difference]: Without dead ends: 96 [2022-10-15 18:18:06,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 18:18:06,170 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 104 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:06,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 118 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-15 18:18:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 61. [2022-10-15 18:18:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.627906976744186) internal successors, (70), 60 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-10-15 18:18:06,179 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 8 [2022-10-15 18:18:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:06,180 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-10-15 18:18:06,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-10-15 18:18:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 18:18:06,181 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:06,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:18:06,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 667188304, now seen corresponding path program 1 times [2022-10-15 18:18:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437030203] [2022-10-15 18:18:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:06,213 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 18:18:06,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:06,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437030203] [2022-10-15 18:18:06,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437030203] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:06,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:06,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748059644] [2022-10-15 18:18:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:06,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:06,217 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:06,228 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-10-15 18:18:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 18:18:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:06,230 INFO L225 Difference]: With dead ends: 61 [2022-10-15 18:18:06,230 INFO L226 Difference]: Without dead ends: 61 [2022-10-15 18:18:06,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:06,232 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 20 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:06,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 92 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-15 18:18:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-15 18:18:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.6046511627906976) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2022-10-15 18:18:06,240 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 11 [2022-10-15 18:18:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:06,240 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2022-10-15 18:18:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:06,241 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2022-10-15 18:18:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 18:18:06,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:06,242 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:06,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 18:18:06,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:06,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash -688125656, now seen corresponding path program 1 times [2022-10-15 18:18:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:06,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983296861] [2022-10-15 18:18:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:06,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:06,436 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 18:18:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983296861] [2022-10-15 18:18:06,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983296861] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:18:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128192022] [2022-10-15 18:18:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:06,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:06,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:06,450 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 18:18:06,471 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 18:18:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:06,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:18:06,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:06,603 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 18:18:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:06,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:06,919 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 18:18:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128192022] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:06,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:18:06,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-15 18:18:06,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872975386] [2022-10-15 18:18:06,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:06,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:18:06,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:18:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:18:06,922 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:07,166 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2022-10-15 18:18:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 18:18:07,167 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 18:18:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:07,168 INFO L225 Difference]: With dead ends: 93 [2022-10-15 18:18:07,168 INFO L226 Difference]: Without dead ends: 93 [2022-10-15 18:18:07,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-10-15 18:18:07,170 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 246 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:07,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 148 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:18:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-15 18:18:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 51. [2022-10-15 18:18:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-10-15 18:18:07,177 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 11 [2022-10-15 18:18:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:07,177 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-10-15 18:18:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-10-15 18:18:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:18:07,178 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:07,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:07,221 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 18:18:07,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 18:18:07,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:07,396 INFO L85 PathProgramCache]: Analyzing trace with hash 93446442, now seen corresponding path program 1 times [2022-10-15 18:18:07,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:07,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430980174] [2022-10-15 18:18:07,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:07,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 18:18:07,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165829336] [2022-10-15 18:18:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:07,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:07,409 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 18:18:07,418 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 18:18:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:07,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 18:18:07,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:07,499 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 18:18:07,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:18:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:07,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430980174] [2022-10-15 18:18:07,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 18:18:07,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165829336] [2022-10-15 18:18:07,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165829336] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:07,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:07,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 18:18:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592953310] [2022-10-15 18:18:07,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:07,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:18:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:18:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:07,510 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:07,572 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2022-10-15 18:18:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:18:07,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 18:18:07,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:07,576 INFO L225 Difference]: With dead ends: 128 [2022-10-15 18:18:07,576 INFO L226 Difference]: Without dead ends: 128 [2022-10-15 18:18:07,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:18:07,583 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 152 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:07,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 175 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-10-15 18:18:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 54. [2022-10-15 18:18:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-10-15 18:18:07,602 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 12 [2022-10-15 18:18:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:07,603 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-10-15 18:18:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-10-15 18:18:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:18:07,604 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:07,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:07,645 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 18:18:07,810 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,SelfDestructingSolverStorable6 [2022-10-15 18:18:07,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash -428403276, now seen corresponding path program 1 times [2022-10-15 18:18:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:07,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166746713] [2022-10-15 18:18:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:07,963 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 18:18:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166746713] [2022-10-15 18:18:07,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166746713] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:07,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:07,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117413370] [2022-10-15 18:18:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:18:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:07,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:18:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:07,967 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:08,007 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-10-15 18:18:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:18:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:18:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:08,009 INFO L225 Difference]: With dead ends: 53 [2022-10-15 18:18:08,009 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 18:18:08,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:08,010 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:08,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:08,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 18:18:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 18:18:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-10-15 18:18:08,015 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 14 [2022-10-15 18:18:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:08,015 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-10-15 18:18:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-10-15 18:18:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:18:08,016 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:08,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:08,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 18:18:08,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:08,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -428384375, now seen corresponding path program 1 times [2022-10-15 18:18:08,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:08,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019573124] [2022-10-15 18:18:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:08,139 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 18:18:08,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:08,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019573124] [2022-10-15 18:18:08,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019573124] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:08,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:08,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 18:18:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782789503] [2022-10-15 18:18:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:18:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:18:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:18:08,143 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:08,228 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-10-15 18:18:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:18:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:18:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:08,229 INFO L225 Difference]: With dead ends: 44 [2022-10-15 18:18:08,229 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 18:18:08,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:08,236 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:08,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 38 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:18:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 18:18:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-15 18:18:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-10-15 18:18:08,248 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 14 [2022-10-15 18:18:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:08,248 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-10-15 18:18:08,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-10-15 18:18:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 18:18:08,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:08,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 18:18:08,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:08,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -428384374, now seen corresponding path program 1 times [2022-10-15 18:18:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:08,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949451439] [2022-10-15 18:18:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:08,365 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 18:18:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:08,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949451439] [2022-10-15 18:18:08,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949451439] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:08,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:08,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 18:18:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293641467] [2022-10-15 18:18:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 18:18:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 18:18:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 18:18:08,369 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:08,430 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2022-10-15 18:18:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:18:08,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 18:18:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:08,432 INFO L225 Difference]: With dead ends: 58 [2022-10-15 18:18:08,432 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 18:18:08,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 18:18:08,436 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:08,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 133 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 18:18:08,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-10-15 18:18:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-10-15 18:18:08,454 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 14 [2022-10-15 18:18:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:08,455 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-10-15 18:18:08,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-10-15 18:18:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 18:18:08,457 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:08,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:08,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 18:18:08,457 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1997684852, now seen corresponding path program 1 times [2022-10-15 18:18:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:08,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063866362] [2022-10-15 18:18:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:08,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:08,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 18:18:08,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308362494] [2022-10-15 18:18:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:08,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:08,488 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 18:18:08,515 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 18:18:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:08,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 18:18:08,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:08,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:18:14,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 89 [2022-10-15 18:18:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:18:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063866362] [2022-10-15 18:18:14,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 18:18:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308362494] [2022-10-15 18:18:14,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308362494] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:18:14,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 18:18:14,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-10-15 18:18:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313058723] [2022-10-15 18:18:14,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 18:18:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 18:18:14,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 18:18:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-10-15 18:18:14,840 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:15,075 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2022-10-15 18:18:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 18:18:15,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 18:18:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:15,077 INFO L225 Difference]: With dead ends: 54 [2022-10-15 18:18:15,077 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 18:18:15,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:18:15,079 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:15,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 150 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 146 Unchecked, 0.2s Time] [2022-10-15 18:18:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 18:18:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-10-15 18:18:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-10-15 18:18:15,082 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 15 [2022-10-15 18:18:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:15,083 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-10-15 18:18:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-10-15 18:18:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 18:18:15,084 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:15,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:15,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 18:18:15,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:15,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1962597478, now seen corresponding path program 1 times [2022-10-15 18:18:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:15,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100006702] [2022-10-15 18:18:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:15,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 18:18:15,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442063045] [2022-10-15 18:18:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:15,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:15,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:15,312 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 18:18:15,333 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 18:18:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:18:15,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 18:18:15,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:18:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:18:15,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:18:15,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:18:15,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100006702] [2022-10-15 18:18:15,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 18:18:15,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442063045] [2022-10-15 18:18:15,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442063045] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:18:15,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:18:15,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:18:15,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441682491] [2022-10-15 18:18:15,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:18:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:18:15,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:18:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:18:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:15,405 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:18:15,452 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-10-15 18:18:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:18:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-15 18:18:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:18:15,454 INFO L225 Difference]: With dead ends: 50 [2022-10-15 18:18:15,454 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 18:18:15,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:18:15,455 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:18:15,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:18:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 18:18:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 18:18:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.302325581395349) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-10-15 18:18:15,459 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 18 [2022-10-15 18:18:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:18:15,460 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-10-15 18:18:15,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:18:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-10-15 18:18:15,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 18:18:15,461 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:18:15,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:15,513 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 18:18:15,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:15,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-10-15 18:18:15,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:18:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1058855702, now seen corresponding path program 2 times [2022-10-15 18:18:15,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:18:15,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540755878] [2022-10-15 18:18:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:18:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:18:15,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 18:18:15,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533981777] [2022-10-15 18:18:15,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:18:15,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:18:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:18:15,691 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 18:18:15,694 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 18:18:15,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:18:15,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-10-15 18:18:15,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 18:18:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:18:15,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 18:18:15,791 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 18:18:15,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2022-10-15 18:18:15,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2022-10-15 18:18:15,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2022-10-15 18:18:15,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2022-10-15 18:18:15,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2022-10-15 18:18:15,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2022-10-15 18:18:15,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2022-10-15 18:18:15,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2022-10-15 18:18:15,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2022-10-15 18:18:15,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2022-10-15 18:18:15,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2022-10-15 18:18:15,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2022-10-15 18:18:15,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2022-10-15 18:18:15,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2022-10-15 18:18:15,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2022-10-15 18:18:15,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2022-10-15 18:18:15,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2022-10-15 18:18:15,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 27 remaining) [2022-10-15 18:18:15,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 27 remaining) [2022-10-15 18:18:15,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2022-10-15 18:18:15,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2022-10-15 18:18:15,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2022-10-15 18:18:15,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2022-10-15 18:18:15,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2022-10-15 18:18:15,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2022-10-15 18:18:15,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2022-10-15 18:18:15,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 27 remaining) [2022-10-15 18:18:15,840 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 18:18:16,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 18:18:16,021 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:18:16,026 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 18:18:16,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:18:16 BoogieIcfgContainer [2022-10-15 18:18:16,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 18:18:16,070 INFO L158 Benchmark]: Toolchain (without parser) took 12482.20ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 140.1MB in the beginning and 78.1MB in the end (delta: 62.1MB). Peak memory consumption was 96.8MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,070 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 166.7MB. Free memory was 136.3MB in the beginning and 136.2MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:18:16,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.72ms. Allocated memory is still 166.7MB. Free memory was 139.8MB in the beginning and 128.9MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.38ms. Allocated memory is still 166.7MB. Free memory was 128.8MB in the beginning and 127.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,071 INFO L158 Benchmark]: Boogie Preprocessor took 36.62ms. Allocated memory is still 166.7MB. Free memory was 126.9MB in the beginning and 125.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,072 INFO L158 Benchmark]: RCFGBuilder took 619.30ms. Allocated memory is still 166.7MB. Free memory was 125.3MB in the beginning and 140.2MB in the end (delta: -14.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,072 INFO L158 Benchmark]: TraceAbstraction took 11389.42ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 139.2MB in the beginning and 78.1MB in the end (delta: 61.1MB). Peak memory consumption was 95.2MB. Max. memory is 8.0GB. [2022-10-15 18:18:16,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 166.7MB. Free memory was 136.3MB in the beginning and 136.2MB in the end (delta: 91.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 356.72ms. Allocated memory is still 166.7MB. Free memory was 139.8MB in the beginning and 128.9MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.38ms. Allocated memory is still 166.7MB. Free memory was 128.8MB in the beginning and 127.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.62ms. Allocated memory is still 166.7MB. Free memory was 126.9MB in the beginning and 125.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 619.30ms. Allocated memory is still 166.7MB. Free memory was 125.3MB in the beginning and 140.2MB in the end (delta: -14.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * TraceAbstraction took 11389.42ms. Allocated memory was 166.7MB in the beginning and 200.3MB in the end (delta: 33.6MB). Free memory was 139.2MB in the beginning and 78.1MB in the end (delta: 61.1MB). Peak memory consumption was 95.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L91] CALL q1(argc, argv) [L56] COND FALSE !(argc < 2) [L59] int N = __VERIFIER_nondet_int(); [L60] int a[N]; [L61] int i; [L65] case 0: [L69] case 1: [L73] case 2: [L74] i=0 VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=0, N=2] [L74] COND TRUE i < N VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=0, N=2] [L74] a[i] = i VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=0, N=2] [L74] ++i VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=1, N=2] [L74] COND TRUE i < N VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=1, N=2] [L74] a[i] = i VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=1, N=2] [L74] ++i VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=2, N=2] [L74] COND FALSE !(i < N) VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=2, N=2] [L76] i=0 VAL [\old(argc)=2, a={4:0}, argc=2, argv={14:13}, argv={14:13}, i=0, N=2] [L76] COND TRUE i