/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/eca-rers2018/Problem11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:40:38,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:40:38,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:40:38,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 16:40:38,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:40:38,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:40:38,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:40:38,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:40:38,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:40:38,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:40:38,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:40:38,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:40:38,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:40:38,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:40:38,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:40:38,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:40:38,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:40:38,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:40:38,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:40:38,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:40:38,929 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 16:40:38,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:40:38,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:40:38,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:40:38,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:40:38,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:40:38,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:40:38,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:40:38,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:40:38,987 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:40:38,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:40:38,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:40:38,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:40:38,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:40:38,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:40:38,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:40:38,989 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:40:38,990 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:40:38,990 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:40:38,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:40:38,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:40:38,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:40:38,991 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:40:38,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:40:38,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:40:38,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:40:38,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:40:38,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:40:38,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:40:38,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:40:38,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:40:38,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:40:39,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:40:39,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:40:39,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:40:39,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:40:39,414 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:40:39,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2018/Problem11.c [2022-10-15 16:40:39,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b276a611/e7d8f5ff32d444db90826099852a7f1b/FLAGc62ab9ab4 [2022-10-15 16:40:40,322 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:40:40,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c [2022-10-15 16:40:40,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b276a611/e7d8f5ff32d444db90826099852a7f1b/FLAGc62ab9ab4 [2022-10-15 16:40:40,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b276a611/e7d8f5ff32d444db90826099852a7f1b [2022-10-15 16:40:40,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:40:40,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:40:40,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:40:40,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:40:40,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:40:40,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:40" (1/1) ... [2022-10-15 16:40:40,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c162be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:40, skipping insertion in model container [2022-10-15 16:40:40,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:40:40" (1/1) ... [2022-10-15 16:40:40,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:40:40,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:40:40,808 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/eca-rers2018/Problem11.c[778,791] [2022-10-15 16:40:40,817 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/eca-rers2018/Problem11.c[817,830] [2022-10-15 16:40:41,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:40:41,811 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:40:41,825 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/eca-rers2018/Problem11.c[778,791] [2022-10-15 16:40:41,825 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/eca-rers2018/Problem11.c[817,830] [2022-10-15 16:40:42,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:40:42,113 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:40:42,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42 WrapperNode [2022-10-15 16:40:42,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:40:42,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:40:42,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:40:42,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:40:42,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,483 INFO L138 Inliner]: procedures = 286, calls = 252, calls flagged for inlining = 148, calls inlined = 148, statements flattened = 2260 [2022-10-15 16:40:42,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:40:42,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:40:42,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:40:42,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:40:42,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:40:42,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:40:42,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:40:42,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:40:42,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (1/1) ... [2022-10-15 16:40:42,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:40:42,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:40:42,908 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 16:40:42,923 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 16:40:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:40:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2022-10-15 16:40:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2022-10-15 16:40:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2022-10-15 16:40:42,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2022-10-15 16:40:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:40:42,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:40:42,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:40:43,316 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:40:43,318 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:41:39,746 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:41:39,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:41:39,761 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 16:41:39,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:39 BoogieIcfgContainer [2022-10-15 16:41:39,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:41:39,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:41:39,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:41:39,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:41:39,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:40:40" (1/3) ... [2022-10-15 16:41:39,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b492f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:39, skipping insertion in model container [2022-10-15 16:41:39,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:40:42" (2/3) ... [2022-10-15 16:41:39,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b492f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:41:39, skipping insertion in model container [2022-10-15 16:41:39,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:41:39" (3/3) ... [2022-10-15 16:41:39,775 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11.c [2022-10-15 16:41:39,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:41:39,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-15 16:41:39,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:41:39,872 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;@3c917cde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:41:39,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-15 16:41:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 600 states have (on average 1.5883333333333334) internal successors, (953), 603 states have internal predecessors, (953), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2022-10-15 16:41:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:41:39,888 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:41:39,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:41:39,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_aErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_bErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:41:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:41:39,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1006853, now seen corresponding path program 1 times [2022-10-15 16:41:39,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:41:39,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680672205] [2022-10-15 16:41:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:41:39,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:41:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:41:40,147 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 16:41:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:41:40,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680672205] [2022-10-15 16:41:40,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680672205] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:41:40,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:41:40,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:41:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281514864] [2022-10-15 16:41:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:41:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 16:41:40,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:41:40,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 16:41:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 16:41:40,208 INFO L87 Difference]: Start difference. First operand has 706 states, 600 states have (on average 1.5883333333333334) internal successors, (953), 603 states have internal predecessors, (953), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:41:40,337 INFO L93 Difference]: Finished difference Result 602 states and 851 transitions. [2022-10-15 16:41:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 16:41:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:41:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:41:40,357 INFO L225 Difference]: With dead ends: 602 [2022-10-15 16:41:40,358 INFO L226 Difference]: Without dead ends: 600 [2022-10-15 16:41:40,362 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 16:41:40,368 INFO L413 NwaCegarLoop]: 851 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, 851 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 16:41:40,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:41:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-10-15 16:41:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2022-10-15 16:41:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 497 states have (on average 1.5070422535211268) internal successors, (749), 597 states have internal predecessors, (749), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 849 transitions. [2022-10-15 16:41:40,466 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 849 transitions. Word has length 4 [2022-10-15 16:41:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:41:40,467 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 849 transitions. [2022-10-15 16:41:40,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 849 transitions. [2022-10-15 16:41:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:41:40,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:41:40,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:41:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:41:40,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_aErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_bErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:41:40,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:41:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash 28702284, now seen corresponding path program 1 times [2022-10-15 16:41:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:41:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619301321] [2022-10-15 16:41:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:41:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:41:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:41:40,608 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 16:41:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:41:40,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619301321] [2022-10-15 16:41:40,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619301321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:41:40,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:41:40,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:41:40,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980179004] [2022-10-15 16:41:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:41:40,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:41:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:41:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:41:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:41:40,616 INFO L87 Difference]: Start difference. First operand 600 states and 849 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:41:40,799 INFO L93 Difference]: Finished difference Result 599 states and 848 transitions. [2022-10-15 16:41:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:41:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-15 16:41:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:41:40,804 INFO L225 Difference]: With dead ends: 599 [2022-10-15 16:41:40,804 INFO L226 Difference]: Without dead ends: 598 [2022-10-15 16:41:40,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:41:40,806 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 742 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:41:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 850 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:41:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-10-15 16:41:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-10-15 16:41:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 595 states have internal predecessors, (747), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 847 transitions. [2022-10-15 16:41:40,838 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 847 transitions. Word has length 5 [2022-10-15 16:41:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:41:40,838 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 847 transitions. [2022-10-15 16:41:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 847 transitions. [2022-10-15 16:41:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 16:41:40,844 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:41:40,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:41:40,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:41:40,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_bErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_aErr0ASSERT_VIOLATIONMEMORY_LEAK, reach_error_bErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-15 16:41:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:41:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -295136886, now seen corresponding path program 1 times [2022-10-15 16:41:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:41:40,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61639807] [2022-10-15 16:41:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:41:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:41:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:41:41,396 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 16:41:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:41:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61639807] [2022-10-15 16:41:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61639807] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:41:41,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:41:41,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:41:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472774386] [2022-10-15 16:41:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:41:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:41:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:41:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:41:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:41:41,400 INFO L87 Difference]: Start difference. First operand 598 states and 847 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:41:45,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-15 16:41:47,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-15 16:41:49,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []