/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-industry-pattern/array_monotonic.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:21:02,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:21:02,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:21:02,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:21:02,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:21:02,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:21:02,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:21:02,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:21:02,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:21:02,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:21:02,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:21:02,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:21:02,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:21:02,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:21:02,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:21:02,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:21:02,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:21:02,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:21:02,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:21:02,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:21:02,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:21:02,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:21:02,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:21:02,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:21:02,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:21:02,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:21:02,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:21:02,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:21:02,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 16:21:02,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:21:02,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:21:02,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:21:02,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:21:02,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:21:02,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:21:02,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:21:02,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:21:02,897 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:21:02,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:21:02,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:21:02,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:21:02,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:21:02,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:21:02,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:21:02,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:21:02,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:21:02,899 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:21:02,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:21:02,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:21:02,900 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:21:02,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:21:02,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:21:02,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:21:02,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:21:02,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:21:02,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:21:02,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:21:02,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:21:02,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:21:02,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:21:03,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:21:03,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:21:03,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:21:03,308 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:21:03,309 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:21:03,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2022-10-15 16:21:03,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a249d98d9/b53e9c9a99d24e2bb385b54211178f34/FLAG7af6bdf38 [2022-10-15 16:21:04,043 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:21:04,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_monotonic.i [2022-10-15 16:21:04,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a249d98d9/b53e9c9a99d24e2bb385b54211178f34/FLAG7af6bdf38 [2022-10-15 16:21:04,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a249d98d9/b53e9c9a99d24e2bb385b54211178f34 [2022-10-15 16:21:04,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:21:04,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:21:04,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:21:04,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:21:04,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:21:04,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@951a71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04, skipping insertion in model container [2022-10-15 16:21:04,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:21:04,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:21:04,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_monotonic.i[808,821] [2022-10-15 16:21:04,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:21:04,657 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:21:04,675 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_monotonic.i[808,821] [2022-10-15 16:21:04,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:21:04,697 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:21:04,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04 WrapperNode [2022-10-15 16:21:04,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:21:04,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:21:04,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:21:04,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:21:04,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,738 INFO L138 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-10-15 16:21:04,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:21:04,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:21:04,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:21:04,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:21:04,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:21:04,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:21:04,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:21:04,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:21:04,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (1/1) ... [2022-10-15 16:21:04,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:21:04,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:04,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 16:21:04,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 16:21:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:21:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:21:04,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 16:21:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:21:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:21:04,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:21:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:21:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 16:21:04,953 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:21:04,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:21:05,172 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:21:05,181 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:21:05,181 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:21:05,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:21:05 BoogieIcfgContainer [2022-10-15 16:21:05,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:21:05,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:21:05,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:21:05,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:21:05,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:21:04" (1/3) ... [2022-10-15 16:21:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239c8eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:21:05, skipping insertion in model container [2022-10-15 16:21:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:21:04" (2/3) ... [2022-10-15 16:21:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239c8eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:21:05, skipping insertion in model container [2022-10-15 16:21:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:21:05" (3/3) ... [2022-10-15 16:21:05,196 INFO L112 eAbstractionObserver]: Analyzing ICFG array_monotonic.i [2022-10-15 16:21:05,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:21:05,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-15 16:21:05,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:21:05,371 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;@603994a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:21:05,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-15 16:21:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:21:05,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:05,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:21:05,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 16:21:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:05,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339681648] [2022-10-15 16:21:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:05,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:05,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339681648] [2022-10-15 16:21:05,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339681648] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:05,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:21:05,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:21:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999456470] [2022-10-15 16:21:05,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:21:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:21:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:05,942 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:06,009 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-10-15 16:21:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:21:06,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:21:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:06,035 INFO L225 Difference]: With dead ends: 32 [2022-10-15 16:21:06,036 INFO L226 Difference]: Without dead ends: 30 [2022-10-15 16:21:06,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,048 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:06,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 25 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:21:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-15 16:21:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-10-15 16:21:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-10-15 16:21:06,089 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 4 [2022-10-15 16:21:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:06,089 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-10-15 16:21:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-10-15 16:21:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 16:21:06,091 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:06,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 16:21:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:21:06,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 16:21:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573030424] [2022-10-15 16:21:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:06,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:06,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573030424] [2022-10-15 16:21:06,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573030424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:06,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:21:06,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:21:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396836777] [2022-10-15 16:21:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:21:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:06,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:21:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,345 INFO L87 Difference]: Start difference. First operand 30 states and 33 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 16:21:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:06,419 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-10-15 16:21:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:21:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 16:21:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:06,421 INFO L225 Difference]: With dead ends: 39 [2022-10-15 16:21:06,421 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 16:21:06,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,424 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:06,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 16:21:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-10-15 16:21:06,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-10-15 16:21:06,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 4 [2022-10-15 16:21:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:06,433 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-10-15 16:21:06,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-10-15 16:21:06,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:21:06,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:06,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:06,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:21:06,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:06,436 INFO L85 PathProgramCache]: Analyzing trace with hash 264435271, now seen corresponding path program 1 times [2022-10-15 16:21:06,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:06,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326630183] [2022-10-15 16:21:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:06,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326630183] [2022-10-15 16:21:06,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326630183] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:06,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:21:06,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:21:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204583974] [2022-10-15 16:21:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:06,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:21:06,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:21:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,506 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:06,530 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-10-15 16:21:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:21:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:21:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:06,532 INFO L225 Difference]: With dead ends: 32 [2022-10-15 16:21:06,532 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 16:21:06,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,535 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:06,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:21:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 16:21:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 16:21:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.4) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-15 16:21:06,542 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2022-10-15 16:21:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:06,543 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-15 16:21:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-15 16:21:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:21:06,544 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:06,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:06,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:21:06,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 264435272, now seen corresponding path program 1 times [2022-10-15 16:21:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:06,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546074893] [2022-10-15 16:21:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:06,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546074893] [2022-10-15 16:21:06,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546074893] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:06,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:21:06,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:21:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241385468] [2022-10-15 16:21:06,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:06,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:21:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:21:06,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,747 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:06,816 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-10-15 16:21:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:21:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:21:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:06,821 INFO L225 Difference]: With dead ends: 35 [2022-10-15 16:21:06,822 INFO L226 Difference]: Without dead ends: 35 [2022-10-15 16:21:06,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:21:06,824 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:06,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 37 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-15 16:21:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-10-15 16:21:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-10-15 16:21:06,832 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2022-10-15 16:21:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-10-15 16:21:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-10-15 16:21:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 16:21:06,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:06,834 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:06,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:21:06,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 719379050, now seen corresponding path program 1 times [2022-10-15 16:21:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:06,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455830126] [2022-10-15 16:21:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:06,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455830126] [2022-10-15 16:21:06,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455830126] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:06,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493973837] [2022-10-15 16:21:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:06,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:06,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:21:07,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 16:21:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:07,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:21:07,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:07,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:07,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 16:21:07,207 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 10 treesize of output 8 [2022-10-15 16:21:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:07,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:07,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493973837] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:07,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:07,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 16:21:07,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436134440] [2022-10-15 16:21:07,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:07,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:21:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:21:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:21:07,541 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:07,690 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2022-10-15 16:21:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:21:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 16:21:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:07,695 INFO L225 Difference]: With dead ends: 54 [2022-10-15 16:21:07,695 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 16:21:07,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:21:07,702 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:07,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 52 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 16:21:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2022-10-15 16:21:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2022-10-15 16:21:07,729 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 10 [2022-10-15 16:21:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:07,729 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2022-10-15 16:21:07,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-10-15 16:21:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:21:07,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:07,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:07,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 16:21:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:07,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1062994324, now seen corresponding path program 1 times [2022-10-15 16:21:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478013140] [2022-10-15 16:21:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:08,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478013140] [2022-10-15 16:21:08,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478013140] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:08,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857768392] [2022-10-15 16:21:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:08,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:08,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:21:08,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 16:21:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:08,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:21:08,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:08,186 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 16:21:08,187 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 16:21:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:08,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:08,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857768392] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:08,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:08,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 16:21:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490464504] [2022-10-15 16:21:08,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:08,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:21:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:08,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:21:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:21:08,385 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:08,497 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-10-15 16:21:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:21:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:21:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:08,499 INFO L225 Difference]: With dead ends: 58 [2022-10-15 16:21:08,499 INFO L226 Difference]: Without dead ends: 58 [2022-10-15 16:21:08,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:21:08,501 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:08,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 64 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-15 16:21:08,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2022-10-15 16:21:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3125) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-10-15 16:21:08,508 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 14 [2022-10-15 16:21:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:08,508 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-10-15 16:21:08,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-10-15 16:21:08,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 16:21:08,510 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:08,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:08,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 16:21:08,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 16:21:08,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1054106171, now seen corresponding path program 1 times [2022-10-15 16:21:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:08,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253320738] [2022-10-15 16:21:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:08,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 16:21:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:08,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253320738] [2022-10-15 16:21:08,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253320738] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509518108] [2022-10-15 16:21:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:08,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:21:08,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:21:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:08,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:21:08,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:08,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:09,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509518108] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:09,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:09,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-10-15 16:21:09,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95295890] [2022-10-15 16:21:09,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 16:21:09,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 16:21:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-10-15 16:21:09,006 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:09,216 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2022-10-15 16:21:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 16:21:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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 18 [2022-10-15 16:21:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:09,219 INFO L225 Difference]: With dead ends: 125 [2022-10-15 16:21:09,219 INFO L226 Difference]: Without dead ends: 125 [2022-10-15 16:21:09,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-10-15 16:21:09,220 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 325 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:09,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 89 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-10-15 16:21:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2022-10-15 16:21:09,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 103 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 133 transitions. [2022-10-15 16:21:09,234 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 133 transitions. Word has length 18 [2022-10-15 16:21:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:09,236 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 133 transitions. [2022-10-15 16:21:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:09,239 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 133 transitions. [2022-10-15 16:21:09,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 16:21:09,240 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:09,240 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-10-15 16:21:09,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:21:09,441 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 16:21:09,442 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:09,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash -169408810, now seen corresponding path program 2 times [2022-10-15 16:21:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:09,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464377264] [2022-10-15 16:21:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:09,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464377264] [2022-10-15 16:21:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464377264] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474289643] [2022-10-15 16:21:09,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:21:09,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:09,715 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 16:21:09,732 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 16:21:09,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:21:09,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:09,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 16:21:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:09,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:09,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 16:21:09,808 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 10 treesize of output 8 [2022-10-15 16:21:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:10,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:21:10,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474289643] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:10,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:21:10,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2022-10-15 16:21:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856304597] [2022-10-15 16:21:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:21:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:21:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:21:10,064 INFO L87 Difference]: Start difference. First operand 104 states and 133 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:10,206 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2022-10-15 16:21:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 16:21:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2022-10-15 16:21:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:10,208 INFO L225 Difference]: With dead ends: 115 [2022-10-15 16:21:10,208 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 16:21:10,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:21:10,209 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 90 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:10,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 156 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:21:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 16:21:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 103. [2022-10-15 16:21:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.316326530612245) internal successors, (129), 102 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2022-10-15 16:21:10,218 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 28 [2022-10-15 16:21:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:10,219 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2022-10-15 16:21:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2022-10-15 16:21:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 16:21:10,220 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:10,220 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-10-15 16:21:10,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:21:10,434 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 16:21:10,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 178656472, now seen corresponding path program 2 times [2022-10-15 16:21:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:10,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038520935] [2022-10-15 16:21:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:10,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:10,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038520935] [2022-10-15 16:21:10,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038520935] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:10,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484251907] [2022-10-15 16:21:10,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:21:10,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:10,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:10,661 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 16:21:10,683 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 16:21:10,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:21:10,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:10,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:21:10,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:10,741 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-15 16:21:10,741 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-10-15 16:21:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 16:21:10,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 16:21:11,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484251907] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:11,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:11,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-10-15 16:21:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745770579] [2022-10-15 16:21:11,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:11,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 16:21:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 16:21:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-10-15 16:21:11,432 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:11,887 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2022-10-15 16:21:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:21:11,888 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 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 32 [2022-10-15 16:21:11,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:11,889 INFO L225 Difference]: With dead ends: 115 [2022-10-15 16:21:11,889 INFO L226 Difference]: Without dead ends: 115 [2022-10-15 16:21:11,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-10-15 16:21:11,891 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 237 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:11,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 264 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 16:21:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-15 16:21:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-10-15 16:21:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-10-15 16:21:11,899 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 32 [2022-10-15 16:21:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:11,903 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-10-15 16:21:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-10-15 16:21:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 16:21:11,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:11,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:12,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 16:21:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:12,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -697298216, now seen corresponding path program 1 times [2022-10-15 16:21:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:12,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486051547] [2022-10-15 16:21:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:12,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486051547] [2022-10-15 16:21:12,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486051547] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:12,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726695430] [2022-10-15 16:21:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:12,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:12,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:12,287 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 16:21:12,312 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 16:21:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:12,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 16:21:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:12,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:12,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726695430] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:12,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:12,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 16:21:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127221985] [2022-10-15 16:21:12,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 16:21:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 16:21:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:21:12,570 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:12,798 INFO L93 Difference]: Finished difference Result 249 states and 278 transitions. [2022-10-15 16:21:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 16:21:12,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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 46 [2022-10-15 16:21:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:12,801 INFO L225 Difference]: With dead ends: 249 [2022-10-15 16:21:12,801 INFO L226 Difference]: Without dead ends: 249 [2022-10-15 16:21:12,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:21:12,802 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 440 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:12,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 172 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 16:21:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-15 16:21:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 221. [2022-10-15 16:21:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 218 states have (on average 1.2155963302752293) internal successors, (265), 220 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2022-10-15 16:21:12,815 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 46 [2022-10-15 16:21:12,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2022-10-15 16:21:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2022-10-15 16:21:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-15 16:21:12,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:12,819 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:12,861 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 16:21:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:13,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:13,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1316276216, now seen corresponding path program 2 times [2022-10-15 16:21:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:13,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725998507] [2022-10-15 16:21:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:13,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725998507] [2022-10-15 16:21:13,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725998507] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:13,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380791888] [2022-10-15 16:21:13,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:21:13,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:13,558 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 16:21:13,562 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 16:21:13,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:21:13,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:13,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 16:21:13,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:13,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:14,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380791888] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:14,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:14,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 16:21:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928638532] [2022-10-15 16:21:14,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:14,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 16:21:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 16:21:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 16:21:14,228 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:14,827 INFO L93 Difference]: Finished difference Result 521 states and 582 transitions. [2022-10-15 16:21:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 16:21:14,828 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 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 94 [2022-10-15 16:21:14,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:14,832 INFO L225 Difference]: With dead ends: 521 [2022-10-15 16:21:14,832 INFO L226 Difference]: Without dead ends: 521 [2022-10-15 16:21:14,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 16:21:14,834 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1326 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:14,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 323 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:21:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-10-15 16:21:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 461. [2022-10-15 16:21:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 458 states have (on average 1.2074235807860263) internal successors, (553), 460 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 553 transitions. [2022-10-15 16:21:14,876 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 553 transitions. Word has length 94 [2022-10-15 16:21:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 553 transitions. [2022-10-15 16:21:14,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.636363636363637) internal successors, (186), 33 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:14,877 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 553 transitions. [2022-10-15 16:21:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-15 16:21:14,881 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:14,881 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:14,920 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 16:21:15,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:15,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 809366072, now seen corresponding path program 3 times [2022-10-15 16:21:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468383890] [2022-10-15 16:21:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:21:16,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:16,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468383890] [2022-10-15 16:21:16,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468383890] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:16,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201067903] [2022-10-15 16:21:16,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:21:16,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:16,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:16,837 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 16:21:16,840 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 16:21:16,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 16:21:16,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:16,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:21:16,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:21:16,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-10-15 16:21:16,944 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 10 treesize of output 8 [2022-10-15 16:21:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2022-10-15 16:21:17,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:21:17,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201067903] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:21:17,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 16:21:17,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [33] total 37 [2022-10-15 16:21:17,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921934004] [2022-10-15 16:21:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:21:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:21:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:17,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:21:17,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=790, Unknown=0, NotChecked=0, Total=1332 [2022-10-15 16:21:17,688 INFO L87 Difference]: Start difference. First operand 461 states and 553 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:17,723 INFO L93 Difference]: Finished difference Result 462 states and 551 transitions. [2022-10-15 16:21:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:21:17,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2022-10-15 16:21:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:17,729 INFO L225 Difference]: With dead ends: 462 [2022-10-15 16:21:17,729 INFO L226 Difference]: Without dead ends: 462 [2022-10-15 16:21:17,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=542, Invalid=790, Unknown=0, NotChecked=0, Total=1332 [2022-10-15 16:21:17,731 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 64 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:17,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 35 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:21:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-10-15 16:21:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2022-10-15 16:21:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.2008733624454149) internal successors, (550), 459 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 550 transitions. [2022-10-15 16:21:17,753 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 550 transitions. Word has length 190 [2022-10-15 16:21:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:17,755 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 550 transitions. [2022-10-15 16:21:17,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 550 transitions. [2022-10-15 16:21:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-10-15 16:21:17,758 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:17,759 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:17,787 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 16:21:17,970 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,SelfDestructingSolverStorable11 [2022-10-15 16:21:17,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash -694728353, now seen corresponding path program 1 times [2022-10-15 16:21:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:17,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539941426] [2022-10-15 16:21:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:19,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:19,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539941426] [2022-10-15 16:21:19,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539941426] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:19,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492056799] [2022-10-15 16:21:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:19,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:19,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:19,586 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 16:21:19,592 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 16:21:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:19,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 16:21:19,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:20,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:21,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492056799] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:21,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2022-10-15 16:21:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678265643] [2022-10-15 16:21:21,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-15 16:21:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-15 16:21:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 16:21:21,633 INFO L87 Difference]: Start difference. First operand 460 states and 550 transitions. Second operand has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:23,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:23,992 INFO L93 Difference]: Finished difference Result 1062 states and 1187 transitions. [2022-10-15 16:21:23,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-15 16:21:23,993 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 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 191 [2022-10-15 16:21:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:23,998 INFO L225 Difference]: With dead ends: 1062 [2022-10-15 16:21:23,998 INFO L226 Difference]: Without dead ends: 1062 [2022-10-15 16:21:24,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 16:21:24,001 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3561 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3561 Valid, 649 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 16:21:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-10-15 16:21:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 940. [2022-10-15 16:21:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.2004264392324093) internal successors, (1126), 939 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1126 transitions. [2022-10-15 16:21:24,022 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1126 transitions. Word has length 191 [2022-10-15 16:21:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1126 transitions. [2022-10-15 16:21:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.846153846153846) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1126 transitions. [2022-10-15 16:21:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-10-15 16:21:24,030 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:24,031 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:24,065 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 16:21:24,244 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,SelfDestructingSolverStorable12 [2022-10-15 16:21:24,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1882227935, now seen corresponding path program 2 times [2022-10-15 16:21:24,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:24,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836805469] [2022-10-15 16:21:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:21:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11408 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:21:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836805469] [2022-10-15 16:21:29,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836805469] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 16:21:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710567785] [2022-10-15 16:21:29,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:21:29,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:21:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:21:29,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:21:29,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 16:21:29,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:21:29,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:21:29,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 64 conjunts are in the unsatisfiable core [2022-10-15 16:21:29,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:21:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11408 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:30,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:21:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 11408 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:21:36,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710567785] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:21:36,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 16:21:36,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2022-10-15 16:21:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140227899] [2022-10-15 16:21:36,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 16:21:36,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-10-15 16:21:36,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:21:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-10-15 16:21:36,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-10-15 16:21:36,069 INFO L87 Difference]: Start difference. First operand 940 states and 1126 transitions. Second operand has 129 states, 129 states have (on average 5.922480620155039) internal successors, (764), 129 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:21:51,375 INFO L93 Difference]: Finished difference Result 2150 states and 2403 transitions. [2022-10-15 16:21:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-10-15 16:21:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 5.922480620155039) internal successors, (764), 129 states have internal predecessors, (764), 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 383 [2022-10-15 16:21:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:21:51,385 INFO L225 Difference]: With dead ends: 2150 [2022-10-15 16:21:51,386 INFO L226 Difference]: Without dead ends: 2150 [2022-10-15 16:21:51,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-10-15 16:21:51,392 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7029 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7029 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:21:51,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7029 Valid, 1286 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-15 16:21:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-10-15 16:21:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1900. [2022-10-15 16:21:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1898 states have (on average 1.2002107481559536) internal successors, (2278), 1899 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2278 transitions. [2022-10-15 16:21:51,448 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2278 transitions. Word has length 383 [2022-10-15 16:21:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:21:51,449 INFO L495 AbstractCegarLoop]: Abstraction has 1900 states and 2278 transitions. [2022-10-15 16:21:51,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 5.922480620155039) internal successors, (764), 129 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:21:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2278 transitions. [2022-10-15 16:21:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2022-10-15 16:21:51,470 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:21:51,471 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 126, 126, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:21:51,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 16:21:51,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 16:21:51,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-10-15 16:21:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:21:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash -555287585, now seen corresponding path program 3 times [2022-10-15 16:21:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:21:51,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5410988] [2022-10-15 16:21:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:21:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:21:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat