/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/avg40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:14:05,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:14:05,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:14:05,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:14:05,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:14:05,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:14:05,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:14:05,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:14:05,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:14:05,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:14:05,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:14:05,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:14:05,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:14:05,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:14:05,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:14:05,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:14:05,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:14:05,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:14:05,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:14:05,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:14:05,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:14:05,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:14:05,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:14:05,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:14:05,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:14:05,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:14:05,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:14:05,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:14:05,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:14:05,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:14:05,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:14:05,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:14:05,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:14:05,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:14:05,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:14:05,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:14:05,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:14:05,722 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:14:05,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:14:05,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:14:05,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:14:05,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:14:05,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:14:05,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:14:05,724 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:14:05,724 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:14:05,725 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:14:05,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:14:05,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:14:05,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:14:05,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:14:05,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:14:05,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:14:05,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:14:05,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:05,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:14:05,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:14:05,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:14:05,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:14:05,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:14:06,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:14:06,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:14:06,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:14:06,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:14:06,112 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:14:06,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg40-1.i [2022-10-15 17:14:06,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd67a68c0/0ecc3d22fdc742c783c868aaf32d27db/FLAG2f6e26bb7 [2022-10-15 17:14:06,874 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:14:06,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg40-1.i [2022-10-15 17:14:06,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd67a68c0/0ecc3d22fdc742c783c868aaf32d27db/FLAG2f6e26bb7 [2022-10-15 17:14:07,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd67a68c0/0ecc3d22fdc742c783c868aaf32d27db [2022-10-15 17:14:07,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:14:07,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:14:07,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:07,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:14:07,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:14:07,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d90ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07, skipping insertion in model container [2022-10-15 17:14:07,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:14:07,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:14:07,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg40-1.i[1172,1185] [2022-10-15 17:14:07,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:07,499 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:14:07,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg40-1.i[1172,1185] [2022-10-15 17:14:07,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:14:07,546 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:14:07,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07 WrapperNode [2022-10-15 17:14:07,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:14:07,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:07,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:14:07,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:14:07,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,592 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-15 17:14:07,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:14:07,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:14:07,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:14:07,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:14:07,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:14:07,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:14:07,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:14:07,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:14:07,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (1/1) ... [2022-10-15 17:14:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:14:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:07,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 17:14:07,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 17:14:07,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:14:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:14:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:14:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:14:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-10-15 17:14:07,741 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-10-15 17:14:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:14:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:14:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:14:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:14:07,831 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:14:07,834 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:14:08,255 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:14:08,267 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:14:08,267 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:14:08,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:08 BoogieIcfgContainer [2022-10-15 17:14:08,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:14:08,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:14:08,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:14:08,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:14:08,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:14:07" (1/3) ... [2022-10-15 17:14:08,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9bd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:08, skipping insertion in model container [2022-10-15 17:14:08,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:14:07" (2/3) ... [2022-10-15 17:14:08,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9bd39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:14:08, skipping insertion in model container [2022-10-15 17:14:08,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:14:08" (3/3) ... [2022-10-15 17:14:08,286 INFO L112 eAbstractionObserver]: Analyzing ICFG avg40-1.i [2022-10-15 17:14:08,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:14:08,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-15 17:14:08,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:14:08,464 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;@42a27427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:14:08,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-15 17:14:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:08,501 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:08,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:08,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:08,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877074, now seen corresponding path program 1 times [2022-10-15 17:14:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:08,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360281332] [2022-10-15 17:14:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:08,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:08,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360281332] [2022-10-15 17:14:08,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360281332] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:08,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:08,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108450021] [2022-10-15 17:14:08,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:08,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:08,940 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 51 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:09,094 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2022-10-15 17:14:09,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:09,106 INFO L225 Difference]: With dead ends: 47 [2022-10-15 17:14:09,106 INFO L226 Difference]: Without dead ends: 45 [2022-10-15 17:14:09,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:09,114 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:09,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 62 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-15 17:14:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-15 17:14:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-15 17:14:09,165 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 6 [2022-10-15 17:14:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:09,166 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-15 17:14:09,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-15 17:14:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:14:09,167 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:09,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:14:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:14:09,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1482877075, now seen corresponding path program 1 times [2022-10-15 17:14:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:09,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151888321] [2022-10-15 17:14:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:09,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:09,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151888321] [2022-10-15 17:14:09,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151888321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:09,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:09,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:09,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924352239] [2022-10-15 17:14:09,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:09,475 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:09,648 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-10-15 17:14:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:14:09,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:14:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:09,651 INFO L225 Difference]: With dead ends: 43 [2022-10-15 17:14:09,652 INFO L226 Difference]: Without dead ends: 43 [2022-10-15 17:14:09,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:14:09,659 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:09,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 59 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-15 17:14:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-15 17:14:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-10-15 17:14:09,687 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 6 [2022-10-15 17:14:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:09,689 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-10-15 17:14:09,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-10-15 17:14:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:14:09,693 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:09,693 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:14:09,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash 615506454, now seen corresponding path program 1 times [2022-10-15 17:14:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567332300] [2022-10-15 17:14:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:09,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567332300] [2022-10-15 17:14:09,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567332300] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:09,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039496702] [2022-10-15 17:14:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:09,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:09,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:09,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:09,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:14:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-15 17:14:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:10,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:10,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:10,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039496702] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:10,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:10,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-15 17:14:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277526474] [2022-10-15 17:14:10,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:10,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:14:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:14:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:14:10,490 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:10,801 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-15 17:14:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:14:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:10,805 INFO L225 Difference]: With dead ends: 59 [2022-10-15 17:14:10,805 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 17:14:10,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 17:14:10,807 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:10,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 17:14:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-15 17:14:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-10-15 17:14:10,820 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 10 [2022-10-15 17:14:10,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:10,821 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-10-15 17:14:10,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:10,821 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-10-15 17:14:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 17:14:10,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:10,823 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 17:14:10,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:11,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:11,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 251852191, now seen corresponding path program 2 times [2022-10-15 17:14:11,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:11,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413611183] [2022-10-15 17:14:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:11,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:11,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413611183] [2022-10-15 17:14:11,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413611183] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:11,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854842501] [2022-10-15 17:14:11,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:11,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:11,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:11,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:11,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:14:11,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:11,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:11,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 17:14:11,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:11,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:14:11,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:11,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854842501] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:11,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:11,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2022-10-15 17:14:11,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379871977] [2022-10-15 17:14:11,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:11,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 17:14:11,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:11,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 17:14:11,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:14:11,777 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:11,992 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-10-15 17:14:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:14:11,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-15 17:14:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:11,994 INFO L225 Difference]: With dead ends: 54 [2022-10-15 17:14:11,994 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 17:14:11,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-15 17:14:11,996 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:11,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 17:14:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2022-10-15 17:14:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-10-15 17:14:12,003 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2022-10-15 17:14:12,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:12,003 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-10-15 17:14:12,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:14:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-10-15 17:14:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 17:14:12,005 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:12,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:12,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:12,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 17:14:12,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:12,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -493245006, now seen corresponding path program 1 times [2022-10-15 17:14:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:12,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986992748] [2022-10-15 17:14:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:12,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-15 17:14:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:12,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986992748] [2022-10-15 17:14:12,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986992748] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:12,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:14:12,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 17:14:12,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032639508] [2022-10-15 17:14:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 17:14:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:12,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 17:14:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:12,419 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:12,470 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-10-15 17:14:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:14:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-15 17:14:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:12,472 INFO L225 Difference]: With dead ends: 48 [2022-10-15 17:14:12,472 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 17:14:12,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:14:12,476 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:12,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 17:14:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-10-15 17:14:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:12,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-10-15 17:14:12,486 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 42 [2022-10-15 17:14:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-10-15 17:14:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 17:14:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-10-15 17:14:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-15 17:14:12,490 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:12,490 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:14:12,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash 988824045, now seen corresponding path program 1 times [2022-10-15 17:14:12,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:12,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359036785] [2022-10-15 17:14:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 17:14:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:14:12,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:12,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359036785] [2022-10-15 17:14:12,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359036785] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:12,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264568722] [2022-10-15 17:14:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:12,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:12,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:12,660 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:12,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:14:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:12,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 17:14:12,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 17:14:12,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264568722] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:12,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:12,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-10-15 17:14:12,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258652969] [2022-10-15 17:14:12,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:12,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:14:12,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:12,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:14:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:12,817 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:12,848 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2022-10-15 17:14:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-10-15 17:14:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:12,850 INFO L225 Difference]: With dead ends: 62 [2022-10-15 17:14:12,850 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 17:14:12,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:14:12,851 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:12,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 113 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:12,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 17:14:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-10-15 17:14:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 57 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2022-10-15 17:14:12,858 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 47 [2022-10-15 17:14:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:12,859 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2022-10-15 17:14:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2022-10-15 17:14:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 17:14:12,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:12,862 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:12,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:13,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:13,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1612442477, now seen corresponding path program 2 times [2022-10-15 17:14:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:13,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207665066] [2022-10-15 17:14:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:13,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 17:14:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-15 17:14:13,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:13,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207665066] [2022-10-15 17:14:13,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207665066] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:13,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360418744] [2022-10-15 17:14:13,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:13,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:13,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:13,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:14:13,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:13,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:13,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:13,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 158 proven. 66 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-10-15 17:14:13,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-15 17:14:13,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360418744] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:13,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:13,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-15 17:14:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598148725] [2022-10-15 17:14:13,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:13,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-15 17:14:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-15 17:14:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:13,617 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:13,675 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-10-15 17:14:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2022-10-15 17:14:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:13,677 INFO L225 Difference]: With dead ends: 94 [2022-10-15 17:14:13,677 INFO L226 Difference]: Without dead ends: 94 [2022-10-15 17:14:13,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-10-15 17:14:13,678 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:13,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-15 17:14:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-15 17:14:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 86 states have (on average 1.058139534883721) internal successors, (91), 89 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2022-10-15 17:14:13,686 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 79 [2022-10-15 17:14:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:13,687 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2022-10-15 17:14:13,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 17:14:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2022-10-15 17:14:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-15 17:14:13,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:13,690 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:13,728 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 17:14:13,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:13,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:13,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1641165203, now seen corresponding path program 3 times [2022-10-15 17:14:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:13,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559255747] [2022-10-15 17:14:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:14:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2022-10-15 17:14:14,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:14,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559255747] [2022-10-15 17:14:14,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559255747] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:14,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588131628] [2022-10-15 17:14:14,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:14:14,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:14,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:14,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:14,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:14:14,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 17:14:14,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:14,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:14,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:14,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 17:14:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2022-10-15 17:14:15,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:14:15,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588131628] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:14:15,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:14:15,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-10-15 17:14:15,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064881033] [2022-10-15 17:14:15,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:14:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:14:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:14:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:15,124 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:15,177 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2022-10-15 17:14:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:14:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 143 [2022-10-15 17:14:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:15,179 INFO L225 Difference]: With dead ends: 155 [2022-10-15 17:14:15,180 INFO L226 Difference]: Without dead ends: 155 [2022-10-15 17:14:15,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-15 17:14:15,181 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:15,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 75 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-10-15 17:14:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-10-15 17:14:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2022-10-15 17:14:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 144 states have (on average 1.0277777777777777) internal successors, (148), 145 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2022-10-15 17:14:15,191 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 143 [2022-10-15 17:14:15,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:15,192 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 154 transitions. [2022-10-15 17:14:15,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 17:14:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 154 transitions. [2022-10-15 17:14:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-10-15 17:14:15,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:15,198 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:15,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:15,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:15,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 804088009, now seen corresponding path program 1 times [2022-10-15 17:14:15,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:15,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817524416] [2022-10-15 17:14:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:15,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 17:14:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-10-15 17:14:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3585 trivial. 0 not checked. [2022-10-15 17:14:15,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:15,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817524416] [2022-10-15 17:14:15,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817524416] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639189096] [2022-10-15 17:14:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:15,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:15,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:15,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:15,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:14:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:14:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1628 proven. 378 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2022-10-15 17:14:16,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 0 proven. 2010 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2022-10-15 17:14:16,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639189096] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:16,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:16,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 34 [2022-10-15 17:14:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460424316] [2022-10-15 17:14:16,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-15 17:14:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-15 17:14:16,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=621, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 17:14:16,700 INFO L87 Difference]: Start difference. First operand 151 states and 154 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 17:14:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:16,888 INFO L93 Difference]: Finished difference Result 288 states and 291 transitions. [2022-10-15 17:14:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-15 17:14:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 208 [2022-10-15 17:14:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:16,896 INFO L225 Difference]: With dead ends: 288 [2022-10-15 17:14:16,896 INFO L226 Difference]: Without dead ends: 288 [2022-10-15 17:14:16,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=501, Invalid=621, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 17:14:16,900 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 98 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:16,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 177 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-15 17:14:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2022-10-15 17:14:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 277 states have (on average 1.0144404332129964) internal successors, (281), 278 states have internal predecessors, (281), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 287 transitions. [2022-10-15 17:14:16,949 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 287 transitions. Word has length 208 [2022-10-15 17:14:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:16,949 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 287 transitions. [2022-10-15 17:14:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 17:14:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 287 transitions. [2022-10-15 17:14:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-10-15 17:14:16,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:16,975 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 90, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:17,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:17,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash -749142636, now seen corresponding path program 2 times [2022-10-15 17:14:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:17,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485324332] [2022-10-15 17:14:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-15 17:14:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-10-15 17:14:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 9098 refuted. 0 times theorem prover too weak. 7214 trivial. 0 not checked. [2022-10-15 17:14:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485324332] [2022-10-15 17:14:20,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485324332] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:20,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781061177] [2022-10-15 17:14:20,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:14:20,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:20,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:20,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:20,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:14:20,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:14:20,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:20,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:14:20,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 7324 proven. 1770 refuted. 0 times theorem prover too weak. 7218 trivial. 0 not checked. [2022-10-15 17:14:20,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16312 backedges. 0 proven. 9098 refuted. 0 times theorem prover too weak. 7214 trivial. 0 not checked. [2022-10-15 17:14:21,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781061177] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:21,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:21,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 42 [2022-10-15 17:14:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977349561] [2022-10-15 17:14:21,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:21,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:14:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:14:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:14:21,894 INFO L87 Difference]: Start difference. First operand 284 states and 287 transitions. Second operand has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:22,090 INFO L93 Difference]: Finished difference Result 364 states and 367 transitions. [2022-10-15 17:14:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 17:14:22,091 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 405 [2022-10-15 17:14:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:22,097 INFO L225 Difference]: With dead ends: 364 [2022-10-15 17:14:22,098 INFO L226 Difference]: Without dead ends: 364 [2022-10-15 17:14:22,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 785 SyntacticMatches, 22 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:14:22,100 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 120 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:22,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 207 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-10-15 17:14:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2022-10-15 17:14:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 357 states have (on average 1.011204481792717) internal successors, (361), 358 states have internal predecessors, (361), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 367 transitions. [2022-10-15 17:14:22,123 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 367 transitions. Word has length 405 [2022-10-15 17:14:22,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:22,126 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 367 transitions. [2022-10-15 17:14:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.714285714285714) internal successors, (198), 42 states have internal predecessors, (198), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 17:14:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 367 transitions. [2022-10-15 17:14:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-10-15 17:14:22,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:22,148 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:22,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:22,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:22,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1521486710, now seen corresponding path program 3 times [2022-10-15 17:14:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245384703] [2022-10-15 17:14:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:14:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:23,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-10-15 17:14:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28942 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:23,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:23,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245384703] [2022-10-15 17:14:23,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245384703] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:23,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919336963] [2022-10-15 17:14:23,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 17:14:23,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:23,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:23,189 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:23,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:14:23,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-15 17:14:23,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:23,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:14:23,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 28942 backedges. 12970 proven. 7 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:14:23,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 28942 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:23,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919336963] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:23,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:23,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-10-15 17:14:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294646798] [2022-10-15 17:14:23,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:23,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:14:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:14:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:23,509 INFO L87 Difference]: Start difference. First operand 364 states and 367 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:23,551 INFO L93 Difference]: Finished difference Result 384 states and 387 transitions. [2022-10-15 17:14:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 17:14:23,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 525 [2022-10-15 17:14:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:23,554 INFO L225 Difference]: With dead ends: 384 [2022-10-15 17:14:23,554 INFO L226 Difference]: Without dead ends: 384 [2022-10-15 17:14:23,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1059 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:14:23,556 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:23,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 164 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:14:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-10-15 17:14:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2022-10-15 17:14:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 377 states have (on average 1.0106100795755968) internal successors, (381), 378 states have internal predecessors, (381), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 387 transitions. [2022-10-15 17:14:23,568 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 387 transitions. Word has length 525 [2022-10-15 17:14:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:23,569 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 387 transitions. [2022-10-15 17:14:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 387 transitions. [2022-10-15 17:14:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-10-15 17:14:23,582 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:23,583 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 6, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:23,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-15 17:14:23,796 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,SelfDestructingSolverStorable10 [2022-10-15 17:14:23,796 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash 998724022, now seen corresponding path program 4 times [2022-10-15 17:14:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:23,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016171737] [2022-10-15 17:14:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:14:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-10-15 17:14:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:24,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016171737] [2022-10-15 17:14:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016171737] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625025711] [2022-10-15 17:14:24,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 17:14:24,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:24,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:24,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:24,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:14:25,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 17:14:25,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:25,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1586 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 17:14:25,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 12970 proven. 81 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:14:25,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 29016 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:25,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625025711] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:25,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:25,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 17:14:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091818234] [2022-10-15 17:14:25,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 17:14:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 17:14:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 17:14:25,723 INFO L87 Difference]: Start difference. First operand 384 states and 387 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:25,828 INFO L93 Difference]: Finished difference Result 424 states and 427 transitions. [2022-10-15 17:14:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 17:14:25,829 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 545 [2022-10-15 17:14:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:25,831 INFO L225 Difference]: With dead ends: 424 [2022-10-15 17:14:25,832 INFO L226 Difference]: Without dead ends: 424 [2022-10-15 17:14:25,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1103 GetRequests, 1088 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 17:14:25,833 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:25,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 141 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:14:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-10-15 17:14:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2022-10-15 17:14:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 417 states have (on average 1.0095923261390887) internal successors, (421), 418 states have internal predecessors, (421), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 427 transitions. [2022-10-15 17:14:25,846 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 427 transitions. Word has length 545 [2022-10-15 17:14:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:25,847 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 427 transitions. [2022-10-15 17:14:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 427 transitions. [2022-10-15 17:14:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2022-10-15 17:14:25,861 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:25,861 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 14, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:25,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:26,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 903937590, now seen corresponding path program 5 times [2022-10-15 17:14:26,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:26,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866516659] [2022-10-15 17:14:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:14:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-10-15 17:14:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:27,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866516659] [2022-10-15 17:14:27,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866516659] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966224456] [2022-10-15 17:14:27,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 17:14:27,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:27,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:27,681 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 17:14:27,687 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 17:14:30,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2022-10-15 17:14:30,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:30,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:14:30,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 12970 proven. 469 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:14:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 29404 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:30,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966224456] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:30,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:30,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 17:14:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268222529] [2022-10-15 17:14:30,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:30,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 17:14:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 17:14:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 17:14:30,772 INFO L87 Difference]: Start difference. First operand 424 states and 427 transitions. Second operand has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:30,973 INFO L93 Difference]: Finished difference Result 504 states and 507 transitions. [2022-10-15 17:14:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 17:14:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 585 [2022-10-15 17:14:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:30,978 INFO L225 Difference]: With dead ends: 504 [2022-10-15 17:14:30,978 INFO L226 Difference]: Without dead ends: 504 [2022-10-15 17:14:30,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1160 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 17:14:30,981 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 180 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:30,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 95 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:30,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-10-15 17:14:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2022-10-15 17:14:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 497 states have (on average 1.0080482897384306) internal successors, (501), 498 states have internal predecessors, (501), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 507 transitions. [2022-10-15 17:14:30,997 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 507 transitions. Word has length 585 [2022-10-15 17:14:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:30,998 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 507 transitions. [2022-10-15 17:14:30,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.484848484848484) internal successors, (181), 33 states have internal predecessors, (181), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 507 transitions. [2022-10-15 17:14:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-10-15 17:14:31,006 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:31,007 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 30, 30, 30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:31,057 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 17:14:31,222 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,SelfDestructingSolverStorable12 [2022-10-15 17:14:31,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1291790538, now seen corresponding path program 6 times [2022-10-15 17:14:31,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:31,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921908638] [2022-10-15 17:14:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:14:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 17:14:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-15 17:14:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-10-15 17:14:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:14:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:14:34,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921908638] [2022-10-15 17:14:34,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921908638] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:14:34,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746873705] [2022-10-15 17:14:34,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-15 17:14:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:14:34,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:14:34,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:14:34,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 17:14:58,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2022-10-15 17:14:58,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:14:58,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 17:14:58,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:14:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 12970 proven. 2205 refuted. 0 times theorem prover too weak. 15965 trivial. 0 not checked. [2022-10-15 17:14:58,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:14:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 31140 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 28935 trivial. 0 not checked. [2022-10-15 17:14:59,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746873705] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:14:59,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:14:59,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 42 [2022-10-15 17:14:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440805630] [2022-10-15 17:14:59,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:14:59,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-15 17:14:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:14:59,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-15 17:14:59,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:14:59,358 INFO L87 Difference]: Start difference. First operand 504 states and 507 transitions. Second operand has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:14:59,602 INFO L93 Difference]: Finished difference Result 549 states and 552 transitions. [2022-10-15 17:14:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-10-15 17:14:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 665 [2022-10-15 17:14:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:14:59,607 INFO L225 Difference]: With dead ends: 549 [2022-10-15 17:14:59,607 INFO L226 Difference]: Without dead ends: 549 [2022-10-15 17:14:59,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 1304 SyntacticMatches, 23 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 17:14:59,609 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 17:14:59,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 259 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 17:14:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-15 17:14:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-10-15 17:14:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 542 states have (on average 1.007380073800738) internal successors, (546), 543 states have internal predecessors, (546), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 17:14:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 552 transitions. [2022-10-15 17:14:59,623 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 552 transitions. Word has length 665 [2022-10-15 17:14:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:14:59,624 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 552 transitions. [2022-10-15 17:14:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 17:14:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 552 transitions. [2022-10-15 17:14:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2022-10-15 17:14:59,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:14:59,632 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 120, 39, 39, 39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:14:59,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 17:14:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 17:14:59,846 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [avgErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, avgErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-15 17:14:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:14:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -283329893, now seen corresponding path program 7 times [2022-10-15 17:14:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:14:59,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890887795] [2022-10-15 17:14:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:14:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms