/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/float-benchs/inv_square_int.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:42:32,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:42:32,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:42:32,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:42:32,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:42:32,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:42:32,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:42:32,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:42:32,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:42:32,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:42:32,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:42:32,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:42:32,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:42:32,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:42:32,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:42:32,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:42:32,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:42:32,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:42:32,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:42:32,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:42:32,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:42:32,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:42:32,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:42:32,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:42:32,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 16:42:32,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 16:42:32,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 16:42:32,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 16:42:32,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 16:42:32,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 16:42:32,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:42:32,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:42:32,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:42:32,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:42:32,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:42:32,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:42:32,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:42:32,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:42:32,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:42:32,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:42:32,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:42:32,936 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 16:42:32,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:42:32,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:42:32,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:42:32,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:42:32,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:42:32,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:42:32,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:42:32,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:42:32,985 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:42:32,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:42:32,985 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:42:32,986 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:42:32,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:42:32,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:42:32,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:42:32,986 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:42:32,987 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:42:32,987 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:42:32,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:42:32,987 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:42:32,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:42:32,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:42:32,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:42:32,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:42:32,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:42:32,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:42:32,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:42:32,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:42:32,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:42:32,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:42:32,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:42:33,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:42:33,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:42:33,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:42:33,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:42:33,426 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:42:33,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square_int.c [2022-10-15 16:42:33,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1866963c1/56be54fdf0904c2599b924007e7dfae6/FLAG3553c12fd [2022-10-15 16:42:34,092 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:42:34,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square_int.c [2022-10-15 16:42:34,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1866963c1/56be54fdf0904c2599b924007e7dfae6/FLAG3553c12fd [2022-10-15 16:42:34,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1866963c1/56be54fdf0904c2599b924007e7dfae6 [2022-10-15 16:42:34,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:42:34,464 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:42:34,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:42:34,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:42:34,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:42:34,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9f77ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34, skipping insertion in model container [2022-10-15 16:42:34,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:42:34,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:42:34,643 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/float-benchs/inv_square_int.c[482,495] [2022-10-15 16:42:34,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:42:34,667 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:42:34,683 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/float-benchs/inv_square_int.c[482,495] [2022-10-15 16:42:34,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:42:34,702 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:42:34,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34 WrapperNode [2022-10-15 16:42:34,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:42:34,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:42:34,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:42:34,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:42:34,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,744 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-10-15 16:42:34,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:42:34,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:42:34,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:42:34,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:42:34,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:42:34,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:42:34,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:42:34,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:42:34,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (1/1) ... [2022-10-15 16:42:34,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:42:34,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:42:34,812 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 16:42:34,821 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 16:42:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:42:34,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:42:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:42:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:42:34,985 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:42:34,987 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:42:35,154 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:42:35,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:42:35,168 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 16:42:35,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:35 BoogieIcfgContainer [2022-10-15 16:42:35,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:42:35,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:42:35,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:42:35,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:42:35,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:42:34" (1/3) ... [2022-10-15 16:42:35,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4864a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:35, skipping insertion in model container [2022-10-15 16:42:35,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:34" (2/3) ... [2022-10-15 16:42:35,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4864a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:35, skipping insertion in model container [2022-10-15 16:42:35,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:35" (3/3) ... [2022-10-15 16:42:35,189 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2022-10-15 16:42:35,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:42:35,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 16:42:35,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:42:35,308 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;@6def814c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:42:35,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 16:42:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 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 16:42:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:42:35,348 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:42:35,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:42:35,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:42:35,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:42:35,360 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-10-15 16:42:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:42:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604820906] [2022-10-15 16:42:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:42:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:42:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:42:35,596 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 16:42:35,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:42:35,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604820906] [2022-10-15 16:42:35,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604820906] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:42:35,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:42:35,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:42:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407540640] [2022-10-15 16:42:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:42:35,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 16:42:35,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:42:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 16:42:35,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:42:35,670 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:42:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:42:35,685 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-10-15 16:42:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 16:42:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:42:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:42:35,695 INFO L225 Difference]: With dead ends: 12 [2022-10-15 16:42:35,696 INFO L226 Difference]: Without dead ends: 10 [2022-10-15 16:42:35,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:42:35,704 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:42:35,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:42:35,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-10-15 16:42:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-10-15 16:42:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 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 16:42:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2022-10-15 16:42:35,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 6 [2022-10-15 16:42:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:42:35,743 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2022-10-15 16:42:35,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:42:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2022-10-15 16:42:35,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:42:35,745 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:42:35,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:42:35,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:42:35,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:42:35,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:42:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-10-15 16:42:35,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:42:35,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306590946] [2022-10-15 16:42:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:42:35,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:42:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:42:35,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:42:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:42:35,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:42:35,814 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:42:35,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-15 16:42:35,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-15 16:42:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:42:35,823 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-15 16:42:35,827 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:42:35,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:42:35 BoogieIcfgContainer [2022-10-15 16:42:35,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:42:35,850 INFO L158 Benchmark]: Toolchain (without parser) took 1390.99ms. Allocated memory is still 153.1MB. Free memory was 126.8MB in the beginning and 126.9MB in the end (delta: -38.6kB). Peak memory consumption was 507.9kB. Max. memory is 8.0GB. [2022-10-15 16:42:35,851 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:42:35,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.13ms. Allocated memory is still 153.1MB. Free memory was 126.6MB in the beginning and 116.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 16:42:35,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.68ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 115.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:42:35,853 INFO L158 Benchmark]: Boogie Preprocessor took 22.84ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 114.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:42:35,854 INFO L158 Benchmark]: RCFGBuilder took 408.27ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 105.2MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 16:42:35,855 INFO L158 Benchmark]: TraceAbstraction took 669.42ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 126.9MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:42:35,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.13ms. Allocated memory is still 153.1MB. Free memory was 126.6MB in the beginning and 116.9MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.68ms. Allocated memory is still 153.1MB. Free memory was 116.9MB in the beginning and 115.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.84ms. Allocated memory is still 153.1MB. Free memory was 115.5MB in the beginning and 114.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 408.27ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 105.2MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 669.42ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 126.9MB in the end (delta: -22.3MB). There was no memory consumed. 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: 13]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23, overapproximation of memtrack at line 13. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 16:42:35,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...