/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-crafted/bor1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:15:35,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:15:35,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:15:35,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:15:35,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:15:35,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:15:35,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:15:35,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:15:35,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:15:35,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:15:35,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:15:35,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:15:35,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:15:35,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:15:35,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:15:36,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:15:36,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:15:36,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:15:36,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:15:36,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:15:36,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:15:36,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:15:36,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:15:36,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:15:36,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:15:36,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:15:36,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:15:36,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:15:36,066 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 16:15:36,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:15:36,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:15:36,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:15:36,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:15:36,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:15:36,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:15:36,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:15:36,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:15:36,099 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:15:36,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:15:36,099 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:15:36,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:15:36,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:15:36,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:15:36,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:15:36,101 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:15:36,101 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:15:36,101 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:15:36,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:15:36,102 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:15:36,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:15:36,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:15:36,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:15:36,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:15:36,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:15:36,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:15:36,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:15:36,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:15:36,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:15:36,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:15:36,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:15:36,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:15:36,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:15:36,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:15:36,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:15:36,613 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:15:36,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bor1.i [2022-10-15 16:15:36,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9511fa1/98679b6e761e4abe97adc24e14805295/FLAG329e10482 [2022-10-15 16:15:37,311 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:15:37,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bor1.i [2022-10-15 16:15:37,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9511fa1/98679b6e761e4abe97adc24e14805295/FLAG329e10482 [2022-10-15 16:15:37,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9511fa1/98679b6e761e4abe97adc24e14805295 [2022-10-15 16:15:37,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:15:37,706 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:15:37,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:15:37,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:15:37,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:15:37,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752d23b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37, skipping insertion in model container [2022-10-15 16:15:37,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:37,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:15:37,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:15:37,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2022-10-15 16:15:37,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:15:37,944 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:15:37,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/bor1.i[1285,1298] [2022-10-15 16:15:37,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:15:37,987 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:15:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37 WrapperNode [2022-10-15 16:15:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:15:37,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:15:37,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:15:37,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:15:37,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,044 INFO L138 Inliner]: procedures = 16, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-10-15 16:15:38,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:15:38,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:15:38,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:15:38,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:15:38,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:15:38,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:15:38,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:15:38,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:15:38,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (1/1) ... [2022-10-15 16:15:38,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:15:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:38,163 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 16:15:38,193 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 16:15:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:15:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2022-10-15 16:15:38,246 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2022-10-15 16:15:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:15:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:15:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:15:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:15:38,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:15:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:15:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:15:38,329 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:15:38,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:15:38,770 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:15:38,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:15:38,781 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 16:15:38,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:38 BoogieIcfgContainer [2022-10-15 16:15:38,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:15:38,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:15:38,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:15:38,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:15:38,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:15:37" (1/3) ... [2022-10-15 16:15:38,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a8f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:38, skipping insertion in model container [2022-10-15 16:15:38,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:15:37" (2/3) ... [2022-10-15 16:15:38,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491a8f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:15:38, skipping insertion in model container [2022-10-15 16:15:38,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:15:38" (3/3) ... [2022-10-15 16:15:38,802 INFO L112 eAbstractionObserver]: Analyzing ICFG bor1.i [2022-10-15 16:15:38,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:15:38,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-10-15 16:15:38,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:15:38,933 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;@56dffda1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:15:38,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-10-15 16:15:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:15:38,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:38,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:15:38,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2403397, now seen corresponding path program 1 times [2022-10-15 16:15:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:38,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14927980] [2022-10-15 16:15:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,347 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 16:15:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:39,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14927980] [2022-10-15 16:15:39,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14927980] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:39,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:39,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:15:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326469479] [2022-10-15 16:15:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:39,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:15:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:15:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:39,394 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:39,516 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-10-15 16:15:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:15:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:15:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:39,532 INFO L225 Difference]: With dead ends: 64 [2022-10-15 16:15:39,532 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 16:15:39,534 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 16:15:39,547 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 34 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:39,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 73 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 16:15:39,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-10-15 16:15:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 57 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-10-15 16:15:39,615 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 4 [2022-10-15 16:15:39,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:39,615 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-10-15 16:15:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-10-15 16:15:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:15:39,617 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:39,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:15:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:15:39,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2403398, now seen corresponding path program 1 times [2022-10-15 16:15:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992783472] [2022-10-15 16:15:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:39,783 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 16:15:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:39,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992783472] [2022-10-15 16:15:39,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992783472] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:39,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:39,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:15:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480576401] [2022-10-15 16:15:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:15:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:15:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:15:39,788 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:39,856 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-10-15 16:15:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:15:39,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:15:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:39,858 INFO L225 Difference]: With dead ends: 66 [2022-10-15 16:15:39,858 INFO L226 Difference]: Without dead ends: 66 [2022-10-15 16:15:39,859 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 16:15:39,861 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:39,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-15 16:15:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-10-15 16:15:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 59 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-10-15 16:15:39,878 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 4 [2022-10-15 16:15:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:39,878 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-10-15 16:15:39,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-10-15 16:15:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:15:39,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:39,880 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:39,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:15:39,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -909504311, now seen corresponding path program 1 times [2022-10-15 16:15:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253322877] [2022-10-15 16:15:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:40,101 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 16:15:40,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:40,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253322877] [2022-10-15 16:15:40,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253322877] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:40,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262758128] [2022-10-15 16:15:40,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:40,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:40,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:40,105 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 16:15:40,118 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 16:15:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:40,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:15:40,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:40,319 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 16:15:40,380 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 16:15:40,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:40,502 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 16:15:40,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262758128] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:40,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:40,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-15 16:15:40,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313183224] [2022-10-15 16:15:40,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:40,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:15:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:15:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:15:40,509 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 16:15:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:40,905 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2022-10-15 16:15:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:15:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 8 [2022-10-15 16:15:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:40,907 INFO L225 Difference]: With dead ends: 140 [2022-10-15 16:15:40,908 INFO L226 Difference]: Without dead ends: 140 [2022-10-15 16:15:40,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:15:40,910 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:40,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 200 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:15:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-10-15 16:15:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 76. [2022-10-15 16:15:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 71 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2022-10-15 16:15:40,925 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 8 [2022-10-15 16:15:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:40,925 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2022-10-15 16:15:40,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 16:15:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2022-10-15 16:15:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:15:40,927 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:40,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:40,972 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 16:15:41,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:41,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:41,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1167864941, now seen corresponding path program 1 times [2022-10-15 16:15:41,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:41,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721053292] [2022-10-15 16:15:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 16:15:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:41,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721053292] [2022-10-15 16:15:41,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721053292] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:41,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:15:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:15:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962396648] [2022-10-15 16:15:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:15:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:15:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 16:15:41,298 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:41,406 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-10-15 16:15:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:41,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:15:41,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:41,408 INFO L225 Difference]: With dead ends: 73 [2022-10-15 16:15:41,409 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 16:15:41,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:15:41,411 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 73 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 87 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 16:15:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 16:15:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.4) internal successors, (77), 68 states have internal predecessors, (77), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2022-10-15 16:15:41,420 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 14 [2022-10-15 16:15:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:41,421 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2022-10-15 16:15:41,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2022-10-15 16:15:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:15:41,422 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:41,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:41,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:15:41,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1167864940, now seen corresponding path program 1 times [2022-10-15 16:15:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:41,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831680543] [2022-10-15 16:15:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:41,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:41,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831680543] [2022-10-15 16:15:41,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831680543] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:41,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112576972] [2022-10-15 16:15:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:41,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:41,574 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 16:15:41,575 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 16:15:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:41,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:15:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:41,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:41,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112576972] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:41,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:41,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 16:15:41,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847012177] [2022-10-15 16:15:41,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 16:15:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:41,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 16:15:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:15:41,728 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:41,777 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-10-15 16:15:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:15:41,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:15:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:41,780 INFO L225 Difference]: With dead ends: 81 [2022-10-15 16:15:41,780 INFO L226 Difference]: Without dead ends: 81 [2022-10-15 16:15:41,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:15:41,782 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 30 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:41,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 189 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:15:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-15 16:15:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-10-15 16:15:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2022-10-15 16:15:41,790 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 14 [2022-10-15 16:15:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:41,791 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2022-10-15 16:15:41,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2022-10-15 16:15:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:15:41,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:41,792 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2022-10-15 16:15:41,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 16:15:42,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:42,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:42,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1712678226, now seen corresponding path program 2 times [2022-10-15 16:15:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:42,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206406691] [2022-10-15 16:15:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:42,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:42,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206406691] [2022-10-15 16:15:42,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206406691] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:42,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324054446] [2022-10-15 16:15:42,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:42,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:42,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:42,332 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 16:15:42,355 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 16:15:42,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:15:42,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:42,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 16:15:42,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:42,415 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 16:15:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:42,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:15:42,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324054446] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:42,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:15:42,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-10-15 16:15:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534288643] [2022-10-15 16:15:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:15:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:15:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:15:42,635 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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 16:15:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:42,736 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-10-15 16:15:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:15:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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 20 [2022-10-15 16:15:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:42,738 INFO L225 Difference]: With dead ends: 73 [2022-10-15 16:15:42,738 INFO L226 Difference]: Without dead ends: 73 [2022-10-15 16:15:42,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:15:42,740 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 77 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:42,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 86 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-15 16:15:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-10-15 16:15:42,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 68 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-10-15 16:15:42,758 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 20 [2022-10-15 16:15:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:42,758 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-10-15 16:15:42,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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 16:15:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-10-15 16:15:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 16:15:42,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:42,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:42,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:42,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:42,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1271290464, now seen corresponding path program 2 times [2022-10-15 16:15:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:42,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664359388] [2022-10-15 16:15:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:43,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664359388] [2022-10-15 16:15:43,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664359388] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:43,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529272709] [2022-10-15 16:15:43,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:43,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:43,211 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 16:15:43,230 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 16:15:43,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:15:43,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:15:43,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:43,287 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 16:15:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-15 16:15:43,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:15:43,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529272709] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:43,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:15:43,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-10-15 16:15:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764479727] [2022-10-15 16:15:43,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:43,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 16:15:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:43,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 16:15:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:15:43,424 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:43,510 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-10-15 16:15:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:15:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-15 16:15:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:43,512 INFO L225 Difference]: With dead ends: 72 [2022-10-15 16:15:43,512 INFO L226 Difference]: Without dead ends: 72 [2022-10-15 16:15:43,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:15:43,514 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 64 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:43,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 90 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-15 16:15:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-10-15 16:15:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 62 states have (on average 1.1935483870967742) internal successors, (74), 67 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-10-15 16:15:43,520 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 30 [2022-10-15 16:15:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:43,521 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-10-15 16:15:43,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-10-15 16:15:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 16:15:43,522 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:43,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:43,563 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 16:15:43,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:43,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash 7347753, now seen corresponding path program 1 times [2022-10-15 16:15:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500706885] [2022-10-15 16:15:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:43,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500706885] [2022-10-15 16:15:43,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500706885] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402600318] [2022-10-15 16:15:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:43,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:43,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:43,877 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 16:15:43,900 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 16:15:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:43,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:15:43,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:44,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:44,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402600318] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:44,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:44,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 16:15:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517495747] [2022-10-15 16:15:44,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:44,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 16:15:44,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 16:15:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:15:44,131 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:44,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:44,211 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2022-10-15 16:15:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 16:15:44,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-10-15 16:15:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:44,213 INFO L225 Difference]: With dead ends: 104 [2022-10-15 16:15:44,214 INFO L226 Difference]: Without dead ends: 104 [2022-10-15 16:15:44,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:15:44,215 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:44,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 123 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:44,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-10-15 16:15:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-10-15 16:15:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.127659574468085) internal successors, (106), 99 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2022-10-15 16:15:44,223 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 33 [2022-10-15 16:15:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:44,223 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2022-10-15 16:15:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2022-10-15 16:15:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-15 16:15:44,226 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:44,226 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:44,270 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 16:15:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:44,440 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash 127965969, now seen corresponding path program 2 times [2022-10-15 16:15:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:44,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770984413] [2022-10-15 16:15:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:15:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770984413] [2022-10-15 16:15:44,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770984413] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048335140] [2022-10-15 16:15:44,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:44,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:44,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:44,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:15:44,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:15:44,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:44,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:15:44,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:44,931 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 16:15:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-10-15 16:15:45,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:15:45,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048335140] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:15:45,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:15:45,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 22 [2022-10-15 16:15:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361603229] [2022-10-15 16:15:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:15:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:15:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:15:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2022-10-15 16:15:45,260 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:45,477 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2022-10-15 16:15:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 16:15:45,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-10-15 16:15:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:45,479 INFO L225 Difference]: With dead ends: 113 [2022-10-15 16:15:45,479 INFO L226 Difference]: Without dead ends: 113 [2022-10-15 16:15:45,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-10-15 16:15:45,480 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:45,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 115 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-15 16:15:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2022-10-15 16:15:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 102 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2022-10-15 16:15:45,489 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 65 [2022-10-15 16:15:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:45,493 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2022-10-15 16:15:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2022-10-15 16:15:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-15 16:15:45,497 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:45,497 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:45,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:45,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:45,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:45,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1803950425, now seen corresponding path program 1 times [2022-10-15 16:15:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289147545] [2022-10-15 16:15:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:46,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:46,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289147545] [2022-10-15 16:15:46,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289147545] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:46,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160226686] [2022-10-15 16:15:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:46,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:46,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:46,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:46,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:15:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:46,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 16:15:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:46,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:46,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160226686] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:46,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:46,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 16:15:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53145671] [2022-10-15 16:15:46,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 16:15:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 16:15:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 16:15:46,826 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:47,000 INFO L93 Difference]: Finished difference Result 171 states and 179 transitions. [2022-10-15 16:15:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 16:15:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-10-15 16:15:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:47,002 INFO L225 Difference]: With dead ends: 171 [2022-10-15 16:15:47,003 INFO L226 Difference]: Without dead ends: 171 [2022-10-15 16:15:47,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 16:15:47,004 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 90 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:47,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 351 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:15:47,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-10-15 16:15:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-10-15 16:15:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 161 states have (on average 1.0745341614906831) internal successors, (173), 166 states have internal predecessors, (173), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 179 transitions. [2022-10-15 16:15:47,017 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 179 transitions. Word has length 71 [2022-10-15 16:15:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:47,017 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 179 transitions. [2022-10-15 16:15:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0) internal successors, (132), 33 states have internal predecessors, (132), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 179 transitions. [2022-10-15 16:15:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-15 16:15:47,022 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:47,024 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:47,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:47,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:47,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1661495511, now seen corresponding path program 2 times [2022-10-15 16:15:47,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:47,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649757401] [2022-10-15 16:15:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649757401] [2022-10-15 16:15:48,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649757401] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612328388] [2022-10-15 16:15:48,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:15:48,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:48,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:48,659 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:48,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:15:48,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:15:48,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:48,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 16:15:48,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:49,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:50,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612328388] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:50,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:50,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2022-10-15 16:15:50,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54301228] [2022-10-15 16:15:50,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:50,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-15 16:15:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-15 16:15:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 16:15:50,450 INFO L87 Difference]: Start difference. First operand 171 states and 179 transitions. Second operand has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:15:50,845 INFO L93 Difference]: Finished difference Result 299 states and 307 transitions. [2022-10-15 16:15:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-15 16:15:50,845 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-10-15 16:15:50,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:15:50,849 INFO L225 Difference]: With dead ends: 299 [2022-10-15 16:15:50,849 INFO L226 Difference]: Without dead ends: 299 [2022-10-15 16:15:50,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 16:15:50,853 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 279 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:15:50,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 382 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:15:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-10-15 16:15:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-10-15 16:15:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 289 states have (on average 1.041522491349481) internal successors, (301), 294 states have internal predecessors, (301), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:15:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 307 transitions. [2022-10-15 16:15:50,868 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 307 transitions. Word has length 135 [2022-10-15 16:15:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:15:50,869 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 307 transitions. [2022-10-15 16:15:50,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.0) internal successors, (260), 65 states have internal predecessors, (260), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:15:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 307 transitions. [2022-10-15 16:15:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-10-15 16:15:50,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:15:50,887 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:15:50,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:15:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-15 16:15:51,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:15:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:15:51,091 INFO L85 PathProgramCache]: Analyzing trace with hash -682159415, now seen corresponding path program 3 times [2022-10-15 16:15:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:15:51,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689513916] [2022-10-15 16:15:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:15:51,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:15:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:15:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7628 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:15:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:15:55,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689513916] [2022-10-15 16:15:55,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689513916] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:15:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232223759] [2022-10-15 16:15:55,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:15:55,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:15:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:15:55,918 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:15:55,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:15:56,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:15:56,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:15:56,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 16:15:56,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:15:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7628 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2022-10-15 16:15:56,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:15:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7628 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2022-10-15 16:15:57,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232223759] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:15:57,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:15:57,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 9, 9] total 81 [2022-10-15 16:15:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417499371] [2022-10-15 16:15:57,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:15:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-10-15 16:15:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:15:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-10-15 16:15:57,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2267, Invalid=4213, Unknown=0, NotChecked=0, Total=6480 [2022-10-15 16:15:57,017 INFO L87 Difference]: Start difference. First operand 299 states and 307 transitions. Second operand has 81 states, 79 states have (on average 3.7468354430379747) internal successors, (296), 79 states have internal predecessors, (296), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:16:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:16:01,849 INFO L93 Difference]: Finished difference Result 364 states and 401 transitions. [2022-10-15 16:16:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-10-15 16:16:01,850 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 79 states have (on average 3.7468354430379747) internal successors, (296), 79 states have internal predecessors, (296), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2022-10-15 16:16:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:16:01,854 INFO L225 Difference]: With dead ends: 364 [2022-10-15 16:16:01,854 INFO L226 Difference]: Without dead ends: 364 [2022-10-15 16:16:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6951, Invalid=16001, Unknown=0, NotChecked=0, Total=22952 [2022-10-15 16:16:01,866 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 1070 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 16:16:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 467 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 16:16:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-10-15 16:16:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 328. [2022-10-15 16:16:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 319 states have (on average 1.078369905956113) internal successors, (344), 323 states have internal predecessors, (344), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:16:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 350 transitions. [2022-10-15 16:16:01,878 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 350 transitions. Word has length 263 [2022-10-15 16:16:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:16:01,879 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 350 transitions. [2022-10-15 16:16:01,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 79 states have (on average 3.7468354430379747) internal successors, (296), 79 states have internal predecessors, (296), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:16:01,880 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 350 transitions. [2022-10-15 16:16:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-10-15 16:16:01,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:16:01,885 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:16:01,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 16:16:02,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:16:02,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:16:02,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:16:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1689319170, now seen corresponding path program 4 times [2022-10-15 16:16:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:16:02,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685310943] [2022-10-15 16:16:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:16:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:16:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7919 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 16:16:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:16:06,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685310943] [2022-10-15 16:16:06,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685310943] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:16:06,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541345896] [2022-10-15 16:16:06,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 16:16:06,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:16:06,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:16:06,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:16:06,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 16:16:22,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 16:16:22,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:16:22,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-15 16:16:22,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:16:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7919 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 16:16:23,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:16:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7919 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 16:16:27,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541345896] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:16:27,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:16:27,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 103 [2022-10-15 16:16:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319012895] [2022-10-15 16:16:27,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:16:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-10-15 16:16:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:16:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-10-15 16:16:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-10-15 16:16:27,430 INFO L87 Difference]: Start difference. First operand 328 states and 350 transitions. Second operand has 103 states, 103 states have (on average 4.038834951456311) internal successors, (416), 103 states have internal predecessors, (416), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:16:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:16:28,024 INFO L93 Difference]: Finished difference Result 476 states and 498 transitions. [2022-10-15 16:16:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-10-15 16:16:28,025 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 4.038834951456311) internal successors, (416), 103 states have internal predecessors, (416), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-10-15 16:16:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:16:28,028 INFO L225 Difference]: With dead ends: 476 [2022-10-15 16:16:28,028 INFO L226 Difference]: Without dead ends: 476 [2022-10-15 16:16:28,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 505 SyntacticMatches, 28 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2022-10-15 16:16:28,033 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 300 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:16:28,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 571 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:16:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-10-15 16:16:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2022-10-15 16:16:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 467 states have (on average 1.0535331905781584) internal successors, (492), 471 states have internal predecessors, (492), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 16:16:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 498 transitions. [2022-10-15 16:16:28,047 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 498 transitions. Word has length 285 [2022-10-15 16:16:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:16:28,048 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 498 transitions. [2022-10-15 16:16:28,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 4.038834951456311) internal successors, (416), 103 states have internal predecessors, (416), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:16:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 498 transitions. [2022-10-15 16:16:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-10-15 16:16:28,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:16:28,058 INFO L195 NwaCegarLoop]: trace histogram [100, 100, 100, 100, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:16:28,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 16:16:28,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 16:16:28,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting borErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [borErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, borErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-15 16:16:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:16:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1559917551, now seen corresponding path program 5 times [2022-10-15 16:16:28,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:16:28,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058651055] [2022-10-15 16:16:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:16:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:16:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:16:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 19944 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 19900 trivial. 0 not checked. [2022-10-15 16:16:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:16:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058651055] [2022-10-15 16:16:30,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058651055] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:16:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148084890] [2022-10-15 16:16:30,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 16:16:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:16:30,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:16:30,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:16:30,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process