/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/loop-acceleration/underapprox_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:17:53,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:17:53,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:17:53,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:17:53,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:17:53,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:17:53,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:17:53,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:17:53,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:17:53,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:17:53,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:17:53,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:17:53,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:17:53,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:17:53,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:17:53,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:17:53,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:17:53,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:17:53,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:17:53,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:17:53,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:17:53,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:17:53,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:17:53,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:17:53,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:17:53,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 18:17:53,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 18:17:53,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 18:17:53,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 18:17:53,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 18:17:53,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 18:17:53,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 18:17:53,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 18:17:53,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:17:53,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:17:53,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:17:53,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:17:53,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:17:53,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:17:53,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:17:53,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:17:53,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:17:53,278 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:17:53,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:17:53,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:17:53,281 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:17:53,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:17:53,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:17:53,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:17:53,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:17:53,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:17:53,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:17:53,283 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:17:53,283 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:17:53,284 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:17:53,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:17:53,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:17:53,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:17:53,284 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:17:53,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:17:53,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:17:53,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:17:53,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:17:53,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:17:53,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:17:53,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:17:53,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:17:53,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:17:53,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:17:53,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:17:53,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:17:53,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:17:53,703 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:17:53,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2022-10-15 18:17:53,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381d5d12/57b7c9fb96c2404b9b7260f514e249fb/FLAG659142dc3 [2022-10-15 18:17:54,370 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:17:54,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2022-10-15 18:17:54,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381d5d12/57b7c9fb96c2404b9b7260f514e249fb/FLAG659142dc3 [2022-10-15 18:17:54,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4381d5d12/57b7c9fb96c2404b9b7260f514e249fb [2022-10-15 18:17:54,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:17:54,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:17:54,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:17:54,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:17:54,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:17:54,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:54,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab13cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54, skipping insertion in model container [2022-10-15 18:17:54,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:54,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:17:54,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:17:54,941 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/loop-acceleration/underapprox_2-1.c[327,340] [2022-10-15 18:17:54,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:17:54,965 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:17:54,979 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/loop-acceleration/underapprox_2-1.c[327,340] [2022-10-15 18:17:54,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:17:54,998 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:17:54,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54 WrapperNode [2022-10-15 18:17:54,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:17:55,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:17:55,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:17:55,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:17:55,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,038 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-10-15 18:17:55,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:17:55,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:17:55,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:17:55,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:17:55,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:17:55,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:17:55,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:17:55,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:17:55,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (1/1) ... [2022-10-15 18:17:55,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:17:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:55,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:17:55,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:17:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:17:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:17:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:17:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:17:55,284 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:17:55,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:17:55,470 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:17:55,483 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:17:55,487 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 18:17:55,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:17:55 BoogieIcfgContainer [2022-10-15 18:17:55,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:17:55,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:17:55,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:17:55,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:17:55,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:17:54" (1/3) ... [2022-10-15 18:17:55,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b079eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:17:55, skipping insertion in model container [2022-10-15 18:17:55,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:17:54" (2/3) ... [2022-10-15 18:17:55,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b079eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:17:55, skipping insertion in model container [2022-10-15 18:17:55,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:17:55" (3/3) ... [2022-10-15 18:17:55,506 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c [2022-10-15 18:17:55,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:17:55,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 18:17:55,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:17:55,628 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;@104a7815, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:17:55,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 18:17:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:17:55,666 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:55,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:17:55,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:55,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-10-15 18:17:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:55,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867276574] [2022-10-15 18:17:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:56,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:56,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867276574] [2022-10-15 18:17:56,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867276574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:17:56,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:17:56,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 18:17:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966957318] [2022-10-15 18:17:56,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:17:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 18:17:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 18:17:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:17:56,140 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:56,176 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-10-15 18:17:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 18:17:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 18:17:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:56,202 INFO L225 Difference]: With dead ends: 13 [2022-10-15 18:17:56,202 INFO L226 Difference]: Without dead ends: 11 [2022-10-15 18:17:56,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 18:17:56,217 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:56,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:17:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-15 18:17:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-15 18:17:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-10-15 18:17:56,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2022-10-15 18:17:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:56,265 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-10-15 18:17:56,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-10-15 18:17:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-15 18:17:56,267 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:56,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:17:56,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:56,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-10-15 18:17:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:56,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508300136] [2022-10-15 18:17:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508300136] [2022-10-15 18:17:56,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508300136] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:56,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161954544] [2022-10-15 18:17:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:56,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:56,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:17:56,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 18:17:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:56,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:17:56,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:56,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:56,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161954544] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:56,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:56,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 9 [2022-10-15 18:17:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068793880] [2022-10-15 18:17:56,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:56,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 18:17:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 18:17:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:17:56,730 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:56,851 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-15 18:17:56,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:17:56,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 7 [2022-10-15 18:17:56,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:56,852 INFO L225 Difference]: With dead ends: 19 [2022-10-15 18:17:56,852 INFO L226 Difference]: Without dead ends: 19 [2022-10-15 18:17:56,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-10-15 18:17:56,862 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:56,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:17:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-15 18:17:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-10-15 18:17:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-10-15 18:17:56,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2022-10-15 18:17:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:56,872 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-10-15 18:17:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-10-15 18:17:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 18:17:56,873 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:56,873 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:56,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 18:17:57,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:57,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash 490447920, now seen corresponding path program 1 times [2022-10-15 18:17:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:57,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279208143] [2022-10-15 18:17:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 18:17:57,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:57,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279208143] [2022-10-15 18:17:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279208143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:17:57,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:17:57,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:17:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307477673] [2022-10-15 18:17:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:17:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:17:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:17:57,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:17:57,161 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:57,166 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-10-15 18:17:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:17:57,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 18:17:57,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:57,169 INFO L225 Difference]: With dead ends: 15 [2022-10-15 18:17:57,169 INFO L226 Difference]: Without dead ends: 11 [2022-10-15 18:17:57,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:17:57,173 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:57,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:17:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-10-15 18:17:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-10-15 18:17:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-10-15 18:17:57,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-10-15 18:17:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:57,183 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-10-15 18:17:57,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-10-15 18:17:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 18:17:57,187 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:57,187 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:57,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:17:57,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2022-10-15 18:17:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:57,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770023908] [2022-10-15 18:17:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:17:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:57,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:17:57,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770023908] [2022-10-15 18:17:57,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770023908] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:17:57,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157849232] [2022-10-15 18:17:57,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:17:57,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:17:57,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:17:57,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:17:57,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 18:17:57,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:17:57,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:17:57,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-15 18:17:57,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:17:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:57,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:17:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:17:57,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157849232] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:17:57,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:17:57,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-10-15 18:17:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406365848] [2022-10-15 18:17:57,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:17:57,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 18:17:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:17:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 18:17:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 18:17:57,880 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:17:58,941 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-10-15 18:17:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 18:17:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 10 [2022-10-15 18:17:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:17:58,943 INFO L225 Difference]: With dead ends: 19 [2022-10-15 18:17:58,943 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 18:17:58,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-10-15 18:17:58,946 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 18:17:58,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 26 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 18:17:58,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 18:17:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 18:17:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-10-15 18:17:58,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2022-10-15 18:17:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:17:58,952 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-10-15 18:17:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:17:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-10-15 18:17:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:17:58,953 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:17:58,953 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2022-10-15 18:17:58,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 18:17:59,167 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 18:17:59,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 18:17:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:17:59,170 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 3 times [2022-10-15 18:17:59,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:17:59,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655015249] [2022-10-15 18:17:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:17:59,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:17:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:17:59,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 18:17:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 18:17:59,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 18:17:59,232 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 18:17:59,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2022-10-15 18:17:59,242 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2022-10-15 18:17:59,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 18:17:59,250 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-10-15 18:17:59,254 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 18:17:59,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 06:17:59 BoogieIcfgContainer [2022-10-15 18:17:59,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 18:17:59,283 INFO L158 Benchmark]: Toolchain (without parser) took 4525.11ms. Allocated memory is still 154.1MB. Free memory was 129.4MB in the beginning and 122.8MB in the end (delta: 6.5MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-10-15 18:17:59,283 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 154.1MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:17:59,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.50ms. Allocated memory is still 154.1MB. Free memory was 129.2MB in the beginning and 119.9MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 18:17:59,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.88ms. Allocated memory is still 154.1MB. Free memory was 119.7MB in the beginning and 118.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:17:59,285 INFO L158 Benchmark]: Boogie Preprocessor took 23.01ms. Allocated memory is still 154.1MB. Free memory was 118.4MB in the beginning and 117.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 18:17:59,286 INFO L158 Benchmark]: RCFGBuilder took 426.15ms. Allocated memory is still 154.1MB. Free memory was 117.3MB in the beginning and 108.3MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-15 18:17:59,286 INFO L158 Benchmark]: TraceAbstraction took 3787.55ms. Allocated memory is still 154.1MB. Free memory was 107.6MB in the beginning and 122.8MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 18:17:59,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 154.1MB. Free memory is still 123.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.50ms. Allocated memory is still 154.1MB. Free memory was 129.2MB in the beginning and 119.9MB in the end (delta: 9.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.88ms. Allocated memory is still 154.1MB. Free memory was 119.7MB in the beginning and 118.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.01ms. Allocated memory is still 154.1MB. Free memory was 118.4MB in the beginning and 117.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 426.15ms. Allocated memory is still 154.1MB. Free memory was 117.3MB in the beginning and 108.3MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 3787.55ms. Allocated memory is still 154.1MB. Free memory was 107.6MB in the beginning and 122.8MB in the end (delta: -15.2MB). 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: 7]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 7. Possible FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=4, y=16] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=5, y=32] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=6, y=64] [L16] COND FALSE !(x < 6) VAL [x=6, y=64] [L21] CALL __VERIFIER_assert(x != 6) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 12]: 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: 3.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 30 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=4, InterpolantAutomatonStates: 31, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 3/36 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 18:17:59,308 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...