/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-fpi/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:19:41,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:19:41,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:19:41,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:19:41,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:19:41,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:19:41,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:19:41,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:19:41,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:19:41,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:19:41,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:19:41,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:19:41,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:19:41,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:19:41,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:19:41,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:19:41,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:19:41,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:19:41,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:19:41,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:19:41,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:19:41,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:19:41,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:19:41,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:19:41,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:19:41,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 16:19:41,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 16:19:41,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 16:19:41,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 16:19:41,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 16:19:41,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 16:19:41,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 16:19:41,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 16:19:41,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:19:41,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:19:41,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:19:41,658 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 16:19:41,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:19:41,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:19:41,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:19:41,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:19:41,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:19:41,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:19:41,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:19:41,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:19:41,717 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:19:41,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:19:41,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:19:41,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:19:41,719 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:19:41,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:19:41,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:19:41,720 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:19:41,720 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:19:41,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:19:41,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:19:41,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:19:41,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:19:41,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:19:41,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:19:41,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:19:41,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:19:41,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:19:42,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:19:42,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:19:42,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:19:42,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:19:42,131 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:19:42,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res1f.c [2022-10-15 16:19:42,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1630a336/9393980663844022b689eb87e6d2bc70/FLAG9195f8a81 [2022-10-15 16:19:42,856 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:19:42,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res1f.c [2022-10-15 16:19:42,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1630a336/9393980663844022b689eb87e6d2bc70/FLAG9195f8a81 [2022-10-15 16:19:43,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1630a336/9393980663844022b689eb87e6d2bc70 [2022-10-15 16:19:43,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:19:43,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:19:43,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:19:43,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:19:43,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:19:43,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a91d4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43, skipping insertion in model container [2022-10-15 16:19:43,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:19:43,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:19:43,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res1f.c[588,601] [2022-10-15 16:19:43,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:19:43,493 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:19:43,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res1f.c[588,601] [2022-10-15 16:19:43,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:19:43,565 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:19:43,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43 WrapperNode [2022-10-15 16:19:43,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:19:43,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:19:43,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:19:43,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:19:43,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,628 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-10-15 16:19:43,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:19:43,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:19:43,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:19:43,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:19:43,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:19:43,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:19:43,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:19:43,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:19:43,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (1/1) ... [2022-10-15 16:19:43,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:19:43,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:19:43,701 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 16:19:43,722 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 16:19:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:19:43,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:19:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:19:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:19:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:19:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:19:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:19:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:19:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:19:43,903 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:19:43,905 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:19:44,343 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:19:44,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:19:44,360 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 16:19:44,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:19:44 BoogieIcfgContainer [2022-10-15 16:19:44,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:19:44,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:19:44,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:19:44,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:19:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:19:43" (1/3) ... [2022-10-15 16:19:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abcb04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:19:44, skipping insertion in model container [2022-10-15 16:19:44,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:19:43" (2/3) ... [2022-10-15 16:19:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abcb04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:19:44, skipping insertion in model container [2022-10-15 16:19:44,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:19:44" (3/3) ... [2022-10-15 16:19:44,387 INFO L112 eAbstractionObserver]: Analyzing ICFG res1f.c [2022-10-15 16:19:44,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:19:44,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-15 16:19:44,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:19:44,572 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;@5d4d2f47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:19:44,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-15 16:19:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 57 states have internal predecessors, (68), 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 16:19:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:19:44,591 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:44,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:19:44,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash 925713, now seen corresponding path program 1 times [2022-10-15 16:19:44,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:44,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572505988] [2022-10-15 16:19:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:44,790 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 16:19:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572505988] [2022-10-15 16:19:44,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572505988] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:44,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:44,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:19:44,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642711812] [2022-10-15 16:19:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:19:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:19:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:44,851 INFO L87 Difference]: Start difference. First operand has 58 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 57 states have internal predecessors, (68), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:44,963 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2022-10-15 16:19:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:19:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:19:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:44,975 INFO L225 Difference]: With dead ends: 59 [2022-10-15 16:19:44,976 INFO L226 Difference]: Without dead ends: 56 [2022-10-15 16:19:44,979 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 16:19:44,985 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:44,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 92 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:19:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-15 16:19:45,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-15 16:19:45,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 55 states have internal predecessors, (59), 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 16:19:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-10-15 16:19:45,026 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 4 [2022-10-15 16:19:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:45,027 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-10-15 16:19:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:45,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-10-15 16:19:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:19:45,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:45,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:19:45,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:19:45,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:45,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:45,029 INFO L85 PathProgramCache]: Analyzing trace with hash 889571242, now seen corresponding path program 1 times [2022-10-15 16:19:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:45,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429368140] [2022-10-15 16:19:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:45,406 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 16:19:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429368140] [2022-10-15 16:19:45,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429368140] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:45,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:45,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:19:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926398724] [2022-10-15 16:19:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:45,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:19:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:19:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:45,411 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:45,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:45,467 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2022-10-15 16:19:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:19:45,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:19:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:45,469 INFO L225 Difference]: With dead ends: 50 [2022-10-15 16:19:45,470 INFO L226 Difference]: Without dead ends: 50 [2022-10-15 16:19:45,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:45,472 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 46 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:45,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:19:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-15 16:19:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-15 16:19:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 49 states have internal predecessors, (53), 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 16:19:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-10-15 16:19:45,489 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 6 [2022-10-15 16:19:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:45,489 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-10-15 16:19:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:19:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-10-15 16:19:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 16:19:45,490 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:45,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 16:19:45,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:19:45,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:45,494 INFO L85 PathProgramCache]: Analyzing trace with hash 889571243, now seen corresponding path program 1 times [2022-10-15 16:19:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:45,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423156789] [2022-10-15 16:19:45,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:45,727 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 16:19:45,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:45,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423156789] [2022-10-15 16:19:45,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423156789] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:45,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:45,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:19:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103650399] [2022-10-15 16:19:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:45,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:19:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:19:45,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:45,731 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:45,783 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2022-10-15 16:19:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:19:45,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 16:19:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:45,787 INFO L225 Difference]: With dead ends: 44 [2022-10-15 16:19:45,787 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 16:19:45,790 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 16:19:45,792 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:45,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 35 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:19:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 16:19:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-15 16:19:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 43 states have internal predecessors, (47), 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 16:19:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-10-15 16:19:45,808 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 6 [2022-10-15 16:19:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:45,808 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-10-15 16:19:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:19:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-10-15 16:19:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:19:45,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:45,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:45,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:19:45,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:45,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642443, now seen corresponding path program 1 times [2022-10-15 16:19:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762263977] [2022-10-15 16:19:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:45,938 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 16:19:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:45,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762263977] [2022-10-15 16:19:45,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762263977] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:45,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:45,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:19:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225029968] [2022-10-15 16:19:45,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:19:45,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:19:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:45,942 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:45,973 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-10-15 16:19:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:19:45,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:19:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:45,975 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:19:45,975 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:19:45,976 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 16:19:45,977 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:45,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:19:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:19:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 16:19:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 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 16:19:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-10-15 16:19:45,985 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 9 [2022-10-15 16:19:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-10-15 16:19:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-10-15 16:19:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 16:19:45,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:45,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:19:45,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1268642444, now seen corresponding path program 1 times [2022-10-15 16:19:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172424239] [2022-10-15 16:19:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:46,318 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 16:19:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:46,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172424239] [2022-10-15 16:19:46,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172424239] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:46,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:46,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:19:46,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117250405] [2022-10-15 16:19:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:46,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:19:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:46,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:19:46,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:19:46,322 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:46,489 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2022-10-15 16:19:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:19:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 16:19:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:46,495 INFO L225 Difference]: With dead ends: 64 [2022-10-15 16:19:46,496 INFO L226 Difference]: Without dead ends: 64 [2022-10-15 16:19:46,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:19:46,506 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 134 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:46,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 38 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:19:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-15 16:19:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2022-10-15 16:19:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 48 states have internal predecessors, (52), 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 16:19:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-10-15 16:19:46,517 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 9 [2022-10-15 16:19:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:46,518 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-10-15 16:19:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:19:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-10-15 16:19:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 16:19:46,519 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:46,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:46,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 16:19:46,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:46,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1585184552, now seen corresponding path program 1 times [2022-10-15 16:19:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:46,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177706026] [2022-10-15 16:19:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177706026] [2022-10-15 16:19:46,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177706026] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:19:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009789825] [2022-10-15 16:19:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:46,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:19:46,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:19:46,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:19:46,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:19:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:46,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:19:46,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:19:46,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:19:46,992 INFO L356 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-10-15 16:19:46,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-10-15 16:19:47,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-10-15 16:19:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:47,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:19:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:47,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009789825] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:19:47,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:19:47,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-15 16:19:47,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009528876] [2022-10-15 16:19:47,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:19:47,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:19:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:19:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:19:47,371 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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 16:19:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:47,584 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-10-15 16:19:47,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:19:47,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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 12 [2022-10-15 16:19:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:47,586 INFO L225 Difference]: With dead ends: 62 [2022-10-15 16:19:47,586 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 16:19:47,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:19:47,596 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 81 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:47,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 54 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:19:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 16:19:47,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2022-10-15 16:19:47,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.236842105263158) internal successors, (47), 43 states have internal predecessors, (47), 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 16:19:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-10-15 16:19:47,610 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 12 [2022-10-15 16:19:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:47,610 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-10-15 16:19:47,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 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 16:19:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-10-15 16:19:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:19:47,612 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:47,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:47,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:19:47,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 16:19:47,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:47,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1350983170, now seen corresponding path program 1 times [2022-10-15 16:19:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:47,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332576832] [2022-10-15 16:19:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:47,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:19:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:47,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332576832] [2022-10-15 16:19:47,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332576832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:47,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:47,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:19:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143182647] [2022-10-15 16:19:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:19:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:19:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:19:47,912 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 16:19:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:47,934 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-10-15 16:19:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:19:47,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) Word has length 14 [2022-10-15 16:19:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:47,935 INFO L225 Difference]: With dead ends: 42 [2022-10-15 16:19:47,936 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 16:19:47,936 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 16:19:47,941 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:47,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:19:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 16:19:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 16:19:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 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 16:19:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-10-15 16:19:47,951 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 14 [2022-10-15 16:19:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:47,953 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-10-15 16:19:47,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 16:19:47,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-10-15 16:19:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:19:47,954 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:47,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 16:19:47,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1350983171, now seen corresponding path program 1 times [2022-10-15 16:19:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:47,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332723922] [2022-10-15 16:19:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:19:48,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:48,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332723922] [2022-10-15 16:19:48,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332723922] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:19:48,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:19:48,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 16:19:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151966376] [2022-10-15 16:19:48,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:19:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:19:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:19:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:19:48,154 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 16:19:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:48,262 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2022-10-15 16:19:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:19:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) Word has length 14 [2022-10-15 16:19:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:48,264 INFO L225 Difference]: With dead ends: 56 [2022-10-15 16:19:48,264 INFO L226 Difference]: Without dead ends: 56 [2022-10-15 16:19:48,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:19:48,265 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:48,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 32 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:19:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-15 16:19:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2022-10-15 16:19:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 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 16:19:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-15 16:19:48,269 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2022-10-15 16:19:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:48,270 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-15 16:19:48,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 16:19:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-15 16:19:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-15 16:19:48,271 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:48,271 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:48,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 16:19:48,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:48,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:48,272 INFO L85 PathProgramCache]: Analyzing trace with hash -998895630, now seen corresponding path program 1 times [2022-10-15 16:19:48,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:48,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041105882] [2022-10-15 16:19:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:48,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041105882] [2022-10-15 16:19:48,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041105882] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:19:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755601490] [2022-10-15 16:19:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:48,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:19:48,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:19:48,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:19:48,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:19:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:48,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 16:19:48,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:19:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:48,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:19:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:48,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755601490] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:19:48,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:19:48,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-10-15 16:19:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538633004] [2022-10-15 16:19:48,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:19:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:19:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:19:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:19:48,528 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 16:19:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:48,694 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2022-10-15 16:19:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:19:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 17 [2022-10-15 16:19:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:48,696 INFO L225 Difference]: With dead ends: 115 [2022-10-15 16:19:48,696 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 16:19:48,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:19:48,697 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 175 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:48,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 104 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:19:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 16:19:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 77. [2022-10-15 16:19:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 76 states have internal predecessors, (83), 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 16:19:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2022-10-15 16:19:48,704 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 17 [2022-10-15 16:19:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:48,704 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2022-10-15 16:19:48,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 16:19:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2022-10-15 16:19:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:19:48,706 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:48,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:48,743 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 16:19:48,919 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,SelfDestructingSolverStorable8 [2022-10-15 16:19:48,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1765862850, now seen corresponding path program 2 times [2022-10-15 16:19:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:48,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621724217] [2022-10-15 16:19:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:19:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:19:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:19:49,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621724217] [2022-10-15 16:19:49,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621724217] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:19:49,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008138875] [2022-10-15 16:19:49,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:19:49,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:19:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:19:49,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:19:49,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:19:49,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:19:49,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:19:49,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:19:49,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:19:49,292 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-10-15 16:19:49,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2022-10-15 16:19:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:19:49,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:19:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:19:49,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008138875] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:19:49,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:19:49,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-15 16:19:49,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392673819] [2022-10-15 16:19:49,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:19:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:19:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:19:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:19:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:19:49,672 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 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 16:19:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:19:49,975 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2022-10-15 16:19:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 16:19:49,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 16:19:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:19:49,976 INFO L225 Difference]: With dead ends: 111 [2022-10-15 16:19:49,976 INFO L226 Difference]: Without dead ends: 111 [2022-10-15 16:19:49,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-10-15 16:19:49,978 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 228 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:19:49,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 97 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:19:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-15 16:19:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2022-10-15 16:19:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 72 states have internal predecessors, (79), 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 16:19:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2022-10-15 16:19:49,984 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 20 [2022-10-15 16:19:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:19:49,984 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2022-10-15 16:19:49,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 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 16:19:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2022-10-15 16:19:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 16:19:49,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:19:49,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:50,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:19:50,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:19:50,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-10-15 16:19:50,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:19:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -316809665, now seen corresponding path program 1 times [2022-10-15 16:19:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:19:50,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231947558] [2022-10-15 16:19:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:19:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:19:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:19:50,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-15 16:19:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-15 16:19:50,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-15 16:19:50,350 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-15 16:19:50,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (21 of 22 remaining) [2022-10-15 16:19:50,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-10-15 16:19:50,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-10-15 16:19:50,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-10-15 16:19:50,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-10-15 16:19:50,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-10-15 16:19:50,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-10-15 16:19:50,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-10-15 16:19:50,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-10-15 16:19:50,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-10-15 16:19:50,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-10-15 16:19:50,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-10-15 16:19:50,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-10-15 16:19:50,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-10-15 16:19:50,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-10-15 16:19:50,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2022-10-15 16:19:50,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2022-10-15 16:19:50,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2022-10-15 16:19:50,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2022-10-15 16:19:50,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2022-10-15 16:19:50,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2022-10-15 16:19:50,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (0 of 22 remaining) [2022-10-15 16:19:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 16:19:50,363 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:19:50,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-15 16:19:50,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:19:50 BoogieIcfgContainer [2022-10-15 16:19:50,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-15 16:19:50,450 INFO L158 Benchmark]: Toolchain (without parser) took 7236.60ms. Allocated memory was 164.6MB in the beginning and 204.5MB in the end (delta: 39.8MB). Free memory was 139.1MB in the beginning and 105.0MB in the end (delta: 34.2MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,450 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 164.6MB. Free memory is still 134.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-15 16:19:50,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.34ms. Allocated memory is still 164.6MB. Free memory was 138.9MB in the beginning and 128.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.66ms. Allocated memory is still 164.6MB. Free memory was 128.5MB in the beginning and 126.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,452 INFO L158 Benchmark]: Boogie Preprocessor took 33.30ms. Allocated memory is still 164.6MB. Free memory was 126.8MB in the beginning and 125.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,452 INFO L158 Benchmark]: RCFGBuilder took 701.95ms. Allocated memory is still 164.6MB. Free memory was 125.3MB in the beginning and 110.4MB in the end (delta: 14.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,453 INFO L158 Benchmark]: TraceAbstraction took 6078.11ms. Allocated memory was 164.6MB in the beginning and 204.5MB in the end (delta: 39.8MB). Free memory was 109.8MB in the beginning and 105.0MB in the end (delta: 4.8MB). Peak memory consumption was 45.5MB. Max. memory is 8.0GB. [2022-10-15 16:19:50,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 164.6MB. Free memory is still 134.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 346.34ms. Allocated memory is still 164.6MB. Free memory was 138.9MB in the beginning and 128.7MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.66ms. Allocated memory is still 164.6MB. Free memory was 128.5MB in the beginning and 126.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.30ms. Allocated memory is still 164.6MB. Free memory was 126.8MB in the beginning and 125.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 701.95ms. Allocated memory is still 164.6MB. Free memory was 125.3MB in the beginning and 110.4MB in the end (delta: 14.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6078.11ms. Allocated memory was 164.6MB in the beginning and 204.5MB in the end (delta: 39.8MB). Free memory was 109.8MB in the beginning and 105.0MB in the end (delta: 4.8MB). Peak memory consumption was 45.5MB. 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: 15]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 15. Possible FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 VAL [a={-3:0}, b={-2:0}, N=1, sum={5:0}] [L33] i=0 VAL [a={-3:0}, b={-2:0}, i=0, N=1, sum={5:0}] [L33] COND TRUE i