/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/termination-crafted-lit/cstrcspn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:55:14,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:55:14,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:55:14,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:55:14,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:55:15,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:55:15,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:55:15,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:55:15,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:55:15,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:55:15,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:55:15,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:55:15,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:55:15,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:55:15,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:55:15,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:55:15,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:55:15,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:55:15,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:55:15,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:55:15,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:55:15,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:55:15,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:55:15,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:55:15,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:55:15,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:55:15,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:55:15,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:55:15,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:55:15,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:55:15,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:55:15,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:55:15,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:55:15,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:55:15,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:55:15,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:55:15,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:55:15,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:55:15,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:55:15,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:55:15,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:55:15,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:55:15,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:55:15,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:55:15,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:55:15,119 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:55:15,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:55:15,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:55:15,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:55:15,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:55:15,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:55:15,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:55:15,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:55:15,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:55:15,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:55:15,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:55:15,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:55:15,122 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:55:15,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:55:15,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:55:15,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:55:15,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:55:15,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:55:15,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:55:15,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:55:15,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:55:15,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:55:15,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:55:15,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:55:15,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:55:15,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:55:15,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:55:15,550 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:55:15,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2022-10-15 17:55:15,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0164d989/989a158b6aae4d72a819420403b6027f/FLAGf0011a8a4 [2022-10-15 17:55:16,374 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:55:16,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrcspn.c [2022-10-15 17:55:16,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0164d989/989a158b6aae4d72a819420403b6027f/FLAGf0011a8a4 [2022-10-15 17:55:16,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0164d989/989a158b6aae4d72a819420403b6027f [2022-10-15 17:55:16,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:55:16,695 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:55:16,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:55:16,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:55:16,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:55:16,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:55:16" (1/1) ... [2022-10-15 17:55:16,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb34f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:16, skipping insertion in model container [2022-10-15 17:55:16,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:55:16" (1/1) ... [2022-10-15 17:55:16,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:55:16,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:55:17,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:55:17,042 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:55:17,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:55:17,094 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:55:17,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17 WrapperNode [2022-10-15 17:55:17,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:55:17,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:55:17,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:55:17,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:55:17,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,158 INFO L138 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-10-15 17:55:17,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:55:17,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:55:17,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:55:17,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:55:17,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:55:17,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:55:17,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:55:17,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:55:17,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (1/1) ... [2022-10-15 17:55:17,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:55:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:17,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:55:17,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:55:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:55:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2022-10-15 17:55:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2022-10-15 17:55:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 17:55:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:55:17,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:55:17,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:55:17,446 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:55:17,448 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:55:17,730 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:55:17,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:55:17,750 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:55:17,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:55:17 BoogieIcfgContainer [2022-10-15 17:55:17,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:55:17,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:55:17,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:55:17,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:55:17,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:55:16" (1/3) ... [2022-10-15 17:55:17,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd5f409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:55:17, skipping insertion in model container [2022-10-15 17:55:17,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:55:17" (2/3) ... [2022-10-15 17:55:17,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd5f409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:55:17, skipping insertion in model container [2022-10-15 17:55:17,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:55:17" (3/3) ... [2022-10-15 17:55:17,768 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcspn.c [2022-10-15 17:55:17,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:55:17,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-10-15 17:55:17,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:55:17,873 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;@406e3c74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:55:17,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-10-15 17:55:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 39 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:55:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:55:17,889 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:17,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:17,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 17:55:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash 898778354, now seen corresponding path program 1 times [2022-10-15 17:55:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:17,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426906838] [2022-10-15 17:55:17,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426906838] [2022-10-15 17:55:18,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426906838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:18,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:18,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:55:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625122540] [2022-10-15 17:55:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:55:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:55:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:55:18,381 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 39 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:18,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:18,455 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-10-15 17:55:18,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:55:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2022-10-15 17:55:18,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:18,467 INFO L225 Difference]: With dead ends: 42 [2022-10-15 17:55:18,467 INFO L226 Difference]: Without dead ends: 40 [2022-10-15 17:55:18,470 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 17:55:18,476 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:18,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-15 17:55:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-10-15 17:55:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.64) internal successors, (41), 36 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:55:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-10-15 17:55:18,522 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 7 [2022-10-15 17:55:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:18,523 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-10-15 17:55:18,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-10-15 17:55:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 17:55:18,524 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:18,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:55:18,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 17:55:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 898778355, now seen corresponding path program 1 times [2022-10-15 17:55:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:18,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575227100] [2022-10-15 17:55:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:18,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575227100] [2022-10-15 17:55:18,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575227100] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:55:18,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:55:18,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:55:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625680475] [2022-10-15 17:55:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:55:18,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:55:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:55:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:55:18,694 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:18,718 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-10-15 17:55:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:55:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2022-10-15 17:55:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:18,721 INFO L225 Difference]: With dead ends: 39 [2022-10-15 17:55:18,721 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 17:55:18,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:55:18,723 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:18,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:55:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 17:55:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-10-15 17:55:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.6) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:55:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-10-15 17:55:18,736 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 7 [2022-10-15 17:55:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:18,736 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-10-15 17:55:18,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:55:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-10-15 17:55:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:55:18,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:18,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:18,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:55:18,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 17:55:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 588675296, now seen corresponding path program 1 times [2022-10-15 17:55:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:18,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376272089] [2022-10-15 17:55:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:55:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 17:55:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:55:19,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376272089] [2022-10-15 17:55:19,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376272089] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675958090] [2022-10-15 17:55:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:19,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:19,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:19,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:55:19,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:55:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:19,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:55:19,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:19,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:55:19,717 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-15 17:55:19,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-15 17:55:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:19,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:19,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675958090] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:19,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:55:19,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2022-10-15 17:55:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285642921] [2022-10-15 17:55:19,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:19,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:55:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:55:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:55:19,824 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:55:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:20,052 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-10-15 17:55:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:55:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-10-15 17:55:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:20,057 INFO L225 Difference]: With dead ends: 37 [2022-10-15 17:55:20,057 INFO L226 Difference]: Without dead ends: 37 [2022-10-15 17:55:20,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:55:20,065 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 61 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:20,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 128 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 2 Unchecked, 0.2s Time] [2022-10-15 17:55:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-10-15 17:55:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-10-15 17:55:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:55:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-10-15 17:55:20,078 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2022-10-15 17:55:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:20,080 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-10-15 17:55:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:55:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-10-15 17:55:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 17:55:20,082 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:20,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:20,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 17:55:20,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:20,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 17:55:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 588675297, now seen corresponding path program 1 times [2022-10-15 17:55:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:20,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120378111] [2022-10-15 17:55:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:55:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 17:55:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 17:55:21,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:55:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120378111] [2022-10-15 17:55:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120378111] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625273088] [2022-10-15 17:55:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:21,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:55:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:55:21,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:55:21,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:55:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:55:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-15 17:55:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:55:21,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:55:21,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:55:21,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-15 17:55:21,421 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-15 17:55:21,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-15 17:55:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:55:21,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:55:27,649 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-15 17:55:27,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625273088] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:55:27,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 17:55:27,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2022-10-15 17:55:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775717697] [2022-10-15 17:55:27,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 17:55:27,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-15 17:55:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:55:27,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-15 17:55:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:55:27,654 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 21 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 17:55:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:55:28,277 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2022-10-15 17:55:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 17:55:28,279 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-10-15 17:55:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:55:28,288 INFO L225 Difference]: With dead ends: 89 [2022-10-15 17:55:28,288 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 17:55:28,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2022-10-15 17:55:28,293 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 175 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:55:28,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 308 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 345 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-10-15 17:55:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 17:55:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 37. [2022-10-15 17:55:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:55:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-10-15 17:55:28,317 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2022-10-15 17:55:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:55:28,318 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-10-15 17:55:28,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 16 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 17:55:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-10-15 17:55:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 17:55:28,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:55:28,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:55:28,352 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 17:55:28,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:55:28,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-10-15 17:55:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:55:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1332630223, now seen corresponding path program 1 times [2022-10-15 17:55:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:55:28,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380697877] [2022-10-15 17:55:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:55:28,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:55:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 17:55:28,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 17:55:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 17:55:28,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 17:55:28,597 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 17:55:28,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2022-10-15 17:55:28,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location build_nondet_StringErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2022-10-15 17:55:28,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location build_nondet_StringErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2022-10-15 17:55:28,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2022-10-15 17:55:28,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2022-10-15 17:55:28,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2022-10-15 17:55:28,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2022-10-15 17:55:28,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2022-10-15 17:55:28,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2022-10-15 17:55:28,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2022-10-15 17:55:28,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2022-10-15 17:55:28,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2022-10-15 17:55:28,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2022-10-15 17:55:28,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:55:28,610 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-10-15 17:55:28,615 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 17:55:28,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:55:28 BoogieIcfgContainer [2022-10-15 17:55:28,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 17:55:28,652 INFO L158 Benchmark]: Toolchain (without parser) took 11961.74ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 130.1MB in the beginning and 129.3MB in the end (delta: 806.7kB). Peak memory consumption was 33.2MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,652 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 17:55:28,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.57ms. Allocated memory is still 155.2MB. Free memory was 130.0MB in the beginning and 120.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.65ms. Allocated memory is still 155.2MB. Free memory was 120.4MB in the beginning and 118.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,653 INFO L158 Benchmark]: Boogie Preprocessor took 62.82ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 117.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,654 INFO L158 Benchmark]: RCFGBuilder took 529.30ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 104.3MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,654 INFO L158 Benchmark]: TraceAbstraction took 10891.86ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 103.6MB in the beginning and 129.3MB in the end (delta: -25.7MB). Peak memory consumption was 6.0MB. Max. memory is 8.0GB. [2022-10-15 17:55:28,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 394.57ms. Allocated memory is still 155.2MB. Free memory was 130.0MB in the beginning and 120.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.65ms. Allocated memory is still 155.2MB. Free memory was 120.4MB in the beginning and 118.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.82ms. Allocated memory is still 155.2MB. Free memory was 118.9MB in the beginning and 117.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 529.30ms. Allocated memory is still 155.2MB. Free memory was 117.4MB in the beginning and 104.3MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 10891.86ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 103.6MB in the beginning and 129.3MB in the end (delta: -25.7MB). Peak memory consumption was 6.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 41]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 41. Possible FailurePath: [L42] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] nondetString[length-1] = '\0' VAL [length=1, nondetString={-1:0}] [L19] return nondetString; VAL [\result={-1:0}, length=1, nondetString={-1:0}] [L42] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L42] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] nondetString[length-1] = '\0' VAL [length=1, nondetString={-2:0}] [L19] return nondetString; VAL [\result={-2:0}, length=1, nondetString={-2:0}] [L42] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}, build_nondet_String()={-2:0}] [L42] CALL, EXPR cstrcspn(build_nondet_String(),build_nondet_String()) [L27] const char *sc1; [L28] const char *s; [L29] int c; [L30] sc1 = s1 VAL [s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L30] EXPR \read(*sc1) VAL [\read(*sc1)=0, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L30] COND FALSE !(*sc1 != '\0') [L38] return sc1 - s1; VAL [\result=0, s1={-1:0}, s1={-1:0}, s2={-2:0}, s2={-2:0}, sc1={-1:0}] [L42] RET, EXPR cstrcspn(build_nondet_String(),build_nondet_String()) [L42] return cstrcspn(build_nondet_String(),build_nondet_String()); - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 247 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 584 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 450 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 503 IncrementalHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 134 mSDtfsCounter, 503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 88 ConstructedInterpolants, 8 QuantifiedInterpolants, 664 SizeOfPredicates, 15 NumberOfNonLiveVariables, 234 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 11/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-15 17:55:28,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...