/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/reducercommutativity/max10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:14:40,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:14:40,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:14:40,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:14:40,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:14:40,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:14:40,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:14:40,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:14:40,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:14:40,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:14:40,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:14:40,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:14:40,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:14:40,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:14:40,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:14:40,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:14:40,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:14:40,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:14:40,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:14:40,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:14:40,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:14:40,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:14:40,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:14:40,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:14:40,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:14:40,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:14:40,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:14:40,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:14:40,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:14:40,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:14:40,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:14:40,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:14:40,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:14:40,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:14:40,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:14:40,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:14:40,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:14:40,710 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:14:40,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:14:40,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:14:40,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:14:40,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:14:40,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:14:40,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:14:40,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:14:40,711 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:14:40,712 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:14:40,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:14:40,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:14:40,712 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:14:40,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:14:40,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:14:40,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:14:40,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:14:40,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:40,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:14:40,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:14:40,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:14:40,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:14:40,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:14:41,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:14:41,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:14:41,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:14:41,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:14:41,169 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:14:41,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max10-1.i [2022-10-15 17:14:41,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c9e970/ecb76cc0b5bc4b5da27dda786ad780db/FLAG2d93d8969 [2022-10-15 17:14:41,923 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:14:41,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i [2022-10-15 17:14:41,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c9e970/ecb76cc0b5bc4b5da27dda786ad780db/FLAG2d93d8969 [2022-10-15 17:14:42,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c9e970/ecb76cc0b5bc4b5da27dda786ad780db [2022-10-15 17:14:42,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:14:42,313 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:14:42,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:42,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:14:42,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:14:42,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d35b289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42, skipping insertion in model container [2022-10-15 17:14:42,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:14:42,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:14:42,557 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/reducercommutativity/max10-1.i[1290,1303] [2022-10-15 17:14:42,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:42,584 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:14:42,634 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/reducercommutativity/max10-1.i[1290,1303] [2022-10-15 17:14:42,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:42,662 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:14:42,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42 WrapperNode [2022-10-15 17:14:42,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:42,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:42,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:14:42,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:14:42,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,747 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-10-15 17:14:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:14:42,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:14:42,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:14:42,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:14:42,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:14:42,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:14:42,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:14:42,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (1/1) ... [2022-10-15 17:14:42,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:42,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:42,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:14:42,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:14:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:14:42,963 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-10-15 17:14:42,964 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-10-15 17:14:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:14:42,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:14:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:14:42,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:14:42,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:14:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:14:42,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:14:43,080 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:14:43,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:14:43,483 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:14:43,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:14:43,492 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 17:14:43,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:43 BoogieIcfgContainer [2022-10-15 17:14:43,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:14:43,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:14:43,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:14:43,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:14:43,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:14:42" (1/3) ... [2022-10-15 17:14:43,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60be36e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:43, skipping insertion in model container [2022-10-15 17:14:43,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:42" (2/3) ... [2022-10-15 17:14:43,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60be36e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:43, skipping insertion in model container [2022-10-15 17:14:43,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:43" (3/3) ... [2022-10-15 17:14:43,505 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-10-15 17:14:43,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:14:43,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-10-15 17:14:43,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:14:43,603 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;@5aa3d4dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:14:43,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-10-15 17:14:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 62 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:14:43,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:43,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:14:43,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1849285, now seen corresponding path program 1 times [2022-10-15 17:14:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:43,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234565384] [2022-10-15 17:14:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:43,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234565384] [2022-10-15 17:14:43,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234565384] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:43,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:43,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:14:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894737348] [2022-10-15 17:14:43,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:14:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:14:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:14:43,985 INFO L87 Difference]: Start difference. First operand has 67 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 62 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 17:14:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:44,082 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-10-15 17:14:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:14:44,085 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 17:14:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:44,095 INFO L225 Difference]: With dead ends: 58 [2022-10-15 17:14:44,095 INFO L226 Difference]: Without dead ends: 56 [2022-10-15 17:14:44,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:14:44,103 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:44,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 57 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-15 17:14:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-15 17:14:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 51 states have internal predecessors, (55), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-10-15 17:14:44,158 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 4 [2022-10-15 17:14:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:44,159 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-10-15 17:14:44,160 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 17:14:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-10-15 17:14:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:14:44,160 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:44,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:14:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:14:44,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1849286, now seen corresponding path program 1 times [2022-10-15 17:14:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:44,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245250999] [2022-10-15 17:14:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:44,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:44,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245250999] [2022-10-15 17:14:44,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245250999] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:44,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:44,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:14:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121228177] [2022-10-15 17:14:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:14:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:14:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:14:44,424 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. 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 17:14:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:44,504 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-10-15 17:14:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:14:44,505 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 17:14:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:44,506 INFO L225 Difference]: With dead ends: 60 [2022-10-15 17:14:44,506 INFO L226 Difference]: Without dead ends: 60 [2022-10-15 17:14:44,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:14:44,509 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:44,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 88 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-15 17:14:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-10-15 17:14:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 53 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-10-15 17:14:44,521 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 4 [2022-10-15 17:14:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:44,521 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-10-15 17:14:44,522 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 17:14:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-10-15 17:14:44,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:14:44,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:44,523 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:44,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:14:44,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:44,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1543018551, now seen corresponding path program 1 times [2022-10-15 17:14:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:44,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695416710] [2022-10-15 17:14:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:44,748 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 17:14:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695416710] [2022-10-15 17:14:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695416710] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:44,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129772713] [2022-10-15 17:14:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:44,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:44,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:44,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:14:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:44,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 17:14:44,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:44,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:45,063 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 17:14:45,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:45,171 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 17:14:45,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129772713] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:45,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:45,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-15 17:14:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662140710] [2022-10-15 17:14:45,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:45,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:45,176 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:45,413 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2022-10-15 17:14:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:14:45,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:14:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:45,418 INFO L225 Difference]: With dead ends: 62 [2022-10-15 17:14:45,418 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 17:14:45,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:45,424 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:45,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 164 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 17:14:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-10-15 17:14:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.22) internal successors, (61), 57 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2022-10-15 17:14:45,460 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 8 [2022-10-15 17:14:45,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:45,460 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2022-10-15 17:14:45,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2022-10-15 17:14:45,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 17:14:45,465 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:45,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:45,502 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 17:14:45,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:45,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 802905803, now seen corresponding path program 1 times [2022-10-15 17:14:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:45,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720876946] [2022-10-15 17:14:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:14:45,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:45,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720876946] [2022-10-15 17:14:45,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720876946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:45,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:45,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969885544] [2022-10-15 17:14:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:45,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:45,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:45,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:45,811 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:45,891 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2022-10-15 17:14:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-15 17:14:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:45,893 INFO L225 Difference]: With dead ends: 60 [2022-10-15 17:14:45,893 INFO L226 Difference]: Without dead ends: 60 [2022-10-15 17:14:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:45,895 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 49 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:45,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 75 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-15 17:14:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-10-15 17:14:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.18) internal successors, (59), 55 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-10-15 17:14:45,904 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 23 [2022-10-15 17:14:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-10-15 17:14:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-10-15 17:14:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 17:14:45,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:45,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:14:45,907 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 802905804, now seen corresponding path program 1 times [2022-10-15 17:14:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:45,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952238176] [2022-10-15 17:14:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:45,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:46,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952238176] [2022-10-15 17:14:46,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952238176] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:46,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370420183] [2022-10-15 17:14:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:46,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:46,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:46,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:14:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:46,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 17:14:46,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:46,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:46,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370420183] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:46,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:46,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-15 17:14:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700879625] [2022-10-15 17:14:46,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:46,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:14:46,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:14:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:14:46,365 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:46,427 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-10-15 17:14:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:14:46,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-15 17:14:46,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:46,429 INFO L225 Difference]: With dead ends: 84 [2022-10-15 17:14:46,429 INFO L226 Difference]: Without dead ends: 84 [2022-10-15 17:14:46,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:14:46,431 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 30 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:46,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 196 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-15 17:14:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-10-15 17:14:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 79 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-10-15 17:14:46,441 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 23 [2022-10-15 17:14:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:46,442 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-10-15 17:14:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-10-15 17:14:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 17:14:46,444 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:46,444 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:46,486 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 17:14:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:46,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1615740934, now seen corresponding path program 2 times [2022-10-15 17:14:46,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:46,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444922403] [2022-10-15 17:14:46,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:46,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 17:14:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:47,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444922403] [2022-10-15 17:14:47,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444922403] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:47,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:47,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337430614] [2022-10-15 17:14:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:47,283 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:47,396 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-10-15 17:14:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-10-15 17:14:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:47,399 INFO L225 Difference]: With dead ends: 91 [2022-10-15 17:14:47,399 INFO L226 Difference]: Without dead ends: 91 [2022-10-15 17:14:47,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:47,401 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 50 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:47,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 80 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-15 17:14:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-10-15 17:14:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 78 states have (on average 1.1282051282051282) internal successors, (88), 83 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2022-10-15 17:14:47,411 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 47 [2022-10-15 17:14:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:47,411 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2022-10-15 17:14:47,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2022-10-15 17:14:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-15 17:14:47,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:47,415 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:14:47,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:47,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 484682849, now seen corresponding path program 1 times [2022-10-15 17:14:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:47,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853190463] [2022-10-15 17:14:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:47,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 17:14:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853190463] [2022-10-15 17:14:47,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853190463] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678691268] [2022-10-15 17:14:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:47,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:47,875 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 17:14:47,895 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 17:14:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:47,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-15 17:14:47,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:48,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:48,604 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 25 treesize of output 21 [2022-10-15 17:14:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 162 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678691268] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:49,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:49,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 33 [2022-10-15 17:14:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990698777] [2022-10-15 17:14:49,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 17:14:49,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 17:14:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 17:14:49,052 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 31 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:49,781 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2022-10-15 17:14:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 17:14:49,782 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 31 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-10-15 17:14:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:49,785 INFO L225 Difference]: With dead ends: 112 [2022-10-15 17:14:49,785 INFO L226 Difference]: Without dead ends: 112 [2022-10-15 17:14:49,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=554, Invalid=1702, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 17:14:49,788 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 308 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:49,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 259 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:14:49,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-15 17:14:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-10-15 17:14:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 97 states have (on average 1.134020618556701) internal successors, (110), 101 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-10-15 17:14:49,801 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 52 [2022-10-15 17:14:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:49,801 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-10-15 17:14:49,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.484848484848485) internal successors, (115), 31 states have internal predecessors, (115), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:49,802 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-10-15 17:14:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-15 17:14:49,804 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:49,804 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:49,844 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 17:14:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:50,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1668290746, now seen corresponding path program 2 times [2022-10-15 17:14:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:50,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085809321] [2022-10-15 17:14:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 17:14:50,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:50,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085809321] [2022-10-15 17:14:50,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085809321] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793118102] [2022-10-15 17:14:50,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:50,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:50,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:50,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:14:50,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:50,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:50,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:14:50,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:50,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-10-15 17:14:50,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:50,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793118102] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:50,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:50,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2022-10-15 17:14:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516735499] [2022-10-15 17:14:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:50,935 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:51,146 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2022-10-15 17:14:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:14:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-10-15 17:14:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:51,148 INFO L225 Difference]: With dead ends: 110 [2022-10-15 17:14:51,149 INFO L226 Difference]: Without dead ends: 110 [2022-10-15 17:14:51,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:14:51,150 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 66 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:51,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 162 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-10-15 17:14:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2022-10-15 17:14:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.0975609756097562) internal successors, (90), 85 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2022-10-15 17:14:51,158 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 67 [2022-10-15 17:14:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:51,159 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2022-10-15 17:14:51,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2022-10-15 17:14:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-15 17:14:51,162 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:51,162 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:51,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-15 17:14:51,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:51,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash -309405100, now seen corresponding path program 1 times [2022-10-15 17:14:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:51,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415885904] [2022-10-15 17:14:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-15 17:14:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-10-15 17:14:51,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:51,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415885904] [2022-10-15 17:14:51,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415885904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:51,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:51,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:51,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002940574] [2022-10-15 17:14:51,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:51,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:51,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:51,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:51,695 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:51,744 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2022-10-15 17:14:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:14:51,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 87 [2022-10-15 17:14:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:51,746 INFO L225 Difference]: With dead ends: 95 [2022-10-15 17:14:51,746 INFO L226 Difference]: Without dead ends: 95 [2022-10-15 17:14:51,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:51,748 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:51,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 63 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-15 17:14:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2022-10-15 17:14:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 88 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-10-15 17:14:51,756 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 87 [2022-10-15 17:14:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-10-15 17:14:51,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-10-15 17:14:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-15 17:14:51,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:51,759 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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 17:14:51,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 17:14:51,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash -330247194, now seen corresponding path program 1 times [2022-10-15 17:14:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903059469] [2022-10-15 17:14:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-15 17:14:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-10-15 17:14:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:51,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903059469] [2022-10-15 17:14:51,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903059469] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784302134] [2022-10-15 17:14:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:51,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:51,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:51,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:51,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:14:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:52,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-10-15 17:14:52,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-10-15 17:14:52,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784302134] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:52,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:52,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 17:14:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465340000] [2022-10-15 17:14:52,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:52,165 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:52,200 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2022-10-15 17:14:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 92 [2022-10-15 17:14:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:52,202 INFO L225 Difference]: With dead ends: 121 [2022-10-15 17:14:52,202 INFO L226 Difference]: Without dead ends: 121 [2022-10-15 17:14:52,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:52,204 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 54 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:52,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 186 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-10-15 17:14:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-10-15 17:14:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 116 states have internal predecessors, (125), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2022-10-15 17:14:52,213 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 92 [2022-10-15 17:14:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:52,213 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2022-10-15 17:14:52,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2022-10-15 17:14:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-15 17:14:52,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:52,216 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 2, 2, 2, 2, 2, 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 17:14:52,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:52,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 17:14:52,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash -583603738, now seen corresponding path program 2 times [2022-10-15 17:14:52,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:52,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504798055] [2022-10-15 17:14:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-15 17:14:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2022-10-15 17:14:52,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:52,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504798055] [2022-10-15 17:14:52,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504798055] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:52,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404184774] [2022-10-15 17:14:52,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:52,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:52,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:14:52,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:52,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:52,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:52,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 194 proven. 81 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-10-15 17:14:53,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 277 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-10-15 17:14:53,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404184774] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:53,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:53,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2022-10-15 17:14:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825603396] [2022-10-15 17:14:53,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:14:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:14:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:53,219 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:14:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:53,391 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2022-10-15 17:14:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 132 [2022-10-15 17:14:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:53,393 INFO L225 Difference]: With dead ends: 150 [2022-10-15 17:14:53,393 INFO L226 Difference]: Without dead ends: 150 [2022-10-15 17:14:53,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:53,395 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 122 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:53,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 222 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:53,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-10-15 17:14:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-10-15 17:14:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.0972222222222223) internal successors, (158), 145 states have internal predecessors, (158), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2022-10-15 17:14:53,407 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 132 [2022-10-15 17:14:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:53,407 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2022-10-15 17:14:53,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 17:14:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2022-10-15 17:14:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-10-15 17:14:53,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:53,417 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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 17:14:53,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:53,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:53,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -395718425, now seen corresponding path program 1 times [2022-10-15 17:14:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36497964] [2022-10-15 17:14:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 17:14:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-10-15 17:14:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2470 trivial. 0 not checked. [2022-10-15 17:14:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:53,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36497964] [2022-10-15 17:14:53,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36497964] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:53,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425942836] [2022-10-15 17:14:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:53,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:53,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:53,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:14:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:54,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:54,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 1050 proven. 7 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-10-15 17:14:54,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2470 trivial. 0 not checked. [2022-10-15 17:14:54,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425942836] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:54,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:54,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 17:14:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604172033] [2022-10-15 17:14:54,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:54,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:54,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:54,250 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:54,287 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2022-10-15 17:14:54,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 236 [2022-10-15 17:14:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:54,289 INFO L225 Difference]: With dead ends: 170 [2022-10-15 17:14:54,289 INFO L226 Difference]: Without dead ends: 170 [2022-10-15 17:14:54,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:54,290 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:54,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 130 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-15 17:14:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-10-15 17:14:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.0853658536585367) internal successors, (178), 165 states have internal predecessors, (178), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 184 transitions. [2022-10-15 17:14:54,297 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 184 transitions. Word has length 236 [2022-10-15 17:14:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:54,298 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 184 transitions. [2022-10-15 17:14:54,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 184 transitions. [2022-10-15 17:14:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-10-15 17:14:54,302 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:54,302 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 10, 10, 10, 10, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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 17:14:54,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:54,518 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:54,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -594109849, now seen corresponding path program 2 times [2022-10-15 17:14:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:54,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26017671] [2022-10-15 17:14:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 17:14:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-10-15 17:14:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2470 trivial. 0 not checked. [2022-10-15 17:14:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:55,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26017671] [2022-10-15 17:14:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26017671] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:55,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719048264] [2022-10-15 17:14:55,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:55,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:55,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:14:55,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:55,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:55,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 1050 proven. 81 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-10-15 17:14:55,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2470 trivial. 0 not checked. [2022-10-15 17:14:55,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719048264] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:55,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:55,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-10-15 17:14:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636844536] [2022-10-15 17:14:55,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:55,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 17:14:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:55,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 17:14:55,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:14:55,491 INFO L87 Difference]: Start difference. First operand 170 states and 184 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:55,541 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2022-10-15 17:14:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 17:14:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 256 [2022-10-15 17:14:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:55,544 INFO L225 Difference]: With dead ends: 185 [2022-10-15 17:14:55,544 INFO L226 Difference]: Without dead ends: 185 [2022-10-15 17:14:55,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 510 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:14:55,545 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 36 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:55,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 132 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-10-15 17:14:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-10-15 17:14:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 179 states have (on average 1.0782122905027933) internal successors, (193), 180 states have internal predecessors, (193), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 199 transitions. [2022-10-15 17:14:55,553 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 199 transitions. Word has length 256 [2022-10-15 17:14:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:55,553 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 199 transitions. [2022-10-15 17:14:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 199 transitions. [2022-10-15 17:14:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-10-15 17:14:55,558 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:55,559 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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 17:14:55,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:55,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 17:14:55,774 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:14:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:55,776 INFO L85 PathProgramCache]: Analyzing trace with hash 904027221, now seen corresponding path program 3 times [2022-10-15 17:14:55,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:55,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811516966] [2022-10-15 17:14:55,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:14:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:00,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 17:15:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-10-15 17:15:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2659 trivial. 0 not checked. [2022-10-15 17:15:00,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811516966] [2022-10-15 17:15:00,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811516966] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:00,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:00,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-15 17:15:00,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24894811] [2022-10-15 17:15:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:00,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 17:15:00,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:00,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 17:15:00,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:15:00,969 INFO L87 Difference]: Start difference. First operand 185 states and 199 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:01,077 INFO L93 Difference]: Finished difference Result 386 states and 419 transitions. [2022-10-15 17:15:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:15:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 271 [2022-10-15 17:15:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:01,081 INFO L225 Difference]: With dead ends: 386 [2022-10-15 17:15:01,081 INFO L226 Difference]: Without dead ends: 386 [2022-10-15 17:15:01,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:15:01,082 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 45 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:01,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 459 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:15:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-10-15 17:15:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 297. [2022-10-15 17:15:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 288 states have (on average 1.0868055555555556) internal successors, (313), 289 states have internal predecessors, (313), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-15 17:15:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 328 transitions. [2022-10-15 17:15:01,095 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 328 transitions. Word has length 271 [2022-10-15 17:15:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:01,095 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 328 transitions. [2022-10-15 17:15:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:15:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 328 transitions. [2022-10-15 17:15:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-10-15 17:15:01,101 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:01,101 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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 17:15:01,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 17:15:01,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:15:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:01,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2039923115, now seen corresponding path program 1 times [2022-10-15 17:15:01,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:01,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140841252] [2022-10-15 17:15:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:01,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:15:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 17:15:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-10-15 17:15:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2659 trivial. 0 not checked. [2022-10-15 17:15:01,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:01,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140841252] [2022-10-15 17:15:01,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140841252] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:15:01,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:15:01,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:15:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325790267] [2022-10-15 17:15:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:15:01,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 17:15:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 17:15:01,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:15:01,737 INFO L87 Difference]: Start difference. First operand 297 states and 328 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 17:15:01,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:01,771 INFO L93 Difference]: Finished difference Result 296 states and 327 transitions. [2022-10-15 17:15:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:15:01,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 272 [2022-10-15 17:15:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:01,774 INFO L225 Difference]: With dead ends: 296 [2022-10-15 17:15:01,775 INFO L226 Difference]: Without dead ends: 292 [2022-10-15 17:15:01,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 17:15:01,776 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:01,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:15:01,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-10-15 17:15:01,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2022-10-15 17:15:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 284 states have (on average 1.0845070422535212) internal successors, (308), 285 states have internal predecessors, (308), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-15 17:15:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 322 transitions. [2022-10-15 17:15:01,790 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 322 transitions. Word has length 272 [2022-10-15 17:15:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:01,790 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 322 transitions. [2022-10-15 17:15:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 17:15:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 322 transitions. [2022-10-15 17:15:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-10-15 17:15:01,796 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:01,796 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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 17:15:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-15 17:15:01,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:15:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1735550696, now seen corresponding path program 1 times [2022-10-15 17:15:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:01,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143516774] [2022-10-15 17:15:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:01,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 17:15:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 17:15:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-10-15 17:15:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 1048 proven. 1028 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-10-15 17:15:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:15:07,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143516774] [2022-10-15 17:15:07,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143516774] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:15:07,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578614703] [2022-10-15 17:15:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:15:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:15:07,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:15:07,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:15:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:15:08,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 70 conjunts are in the unsatisfiable core [2022-10-15 17:15:08,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:15:08,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:15:08,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-10-15 17:15:08,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-15 17:15:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 1050 proven. 787 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-10-15 17:15:11,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:15:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 1104 proven. 731 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2022-10-15 17:15:14,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578614703] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:15:14,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:15:14,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 32, 30] total 96 [2022-10-15 17:15:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536922800] [2022-10-15 17:15:14,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:15:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 17:15:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:15:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 17:15:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=8757, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 17:15:14,404 INFO L87 Difference]: Start difference. First operand 292 states and 322 transitions. Second operand has 96 states, 94 states have (on average 3.148936170212766) internal successors, (296), 95 states have internal predecessors, (296), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 17:15:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:15:24,344 INFO L93 Difference]: Finished difference Result 562 states and 623 transitions. [2022-10-15 17:15:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-10-15 17:15:24,349 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 94 states have (on average 3.148936170212766) internal successors, (296), 95 states have internal predecessors, (296), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 273 [2022-10-15 17:15:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:15:24,354 INFO L225 Difference]: With dead ends: 562 [2022-10-15 17:15:24,354 INFO L226 Difference]: Without dead ends: 548 [2022-10-15 17:15:24,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 539 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5701 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1334, Invalid=23158, Unknown=0, NotChecked=0, Total=24492 [2022-10-15 17:15:24,365 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 484 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 6324 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 10321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3918 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:15:24,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2591 Invalid, 10321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 6324 Invalid, 0 Unknown, 3918 Unchecked, 3.8s Time] [2022-10-15 17:15:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-10-15 17:15:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2022-10-15 17:15:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 457 states have (on average 1.100656455142232) internal successors, (503), 459 states have internal predecessors, (503), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-10-15 17:15:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 530 transitions. [2022-10-15 17:15:24,388 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 530 transitions. Word has length 273 [2022-10-15 17:15:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:15:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 530 transitions. [2022-10-15 17:15:24,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 94 states have (on average 3.148936170212766) internal successors, (296), 95 states have internal predecessors, (296), 4 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 17:15:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 530 transitions. [2022-10-15 17:15:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-10-15 17:15:24,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:15:24,396 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 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 17:15:24,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:15:24,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 17:15:24,611 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [maxErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, maxErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2022-10-15 17:15:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:15:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash -11792334, now seen corresponding path program 2 times [2022-10-15 17:15:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:15:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300204336] [2022-10-15 17:15:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:15:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:15:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat