/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 00:32:07,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 00:32:07,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 00:32:07,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 00:32:07,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 00:32:07,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 00:32:07,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 00:32:07,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 00:32:07,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 00:32:07,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 00:32:07,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 00:32:07,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 00:32:07,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 00:32:07,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 00:32:07,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 00:32:07,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 00:32:07,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 00:32:07,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 00:32:07,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 00:32:07,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 00:32:07,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 00:32:07,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 00:32:07,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 00:32:07,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 00:32:07,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 00:32:07,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 00:32:07,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 00:32:07,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 00:32:07,667 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 [2022-10-16 00:32:07,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 00:32:07,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 00:32:07,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 00:32:07,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 00:32:07,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 00:32:07,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 00:32:07,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 00:32:07,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 00:32:07,703 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 00:32:07,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 00:32:07,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 00:32:07,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 00:32:07,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 00:32:07,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 00:32:07,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 00:32:07,705 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 00:32:07,705 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 00:32:07,705 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 00:32:07,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 00:32:07,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 00:32:07,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 00:32:07,707 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 00:32:07,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 00:32:07,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 00:32:07,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 00:32:07,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:32:07,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 00:32:07,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 00:32:07,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 00:32:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 00:32:07,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 00:32:08,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 00:32:08,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 00:32:08,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 00:32:08,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 00:32:08,219 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 00:32:08,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2022-10-16 00:32:08,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c2ab154/010290acb739486e9dd2541a114d71e7/FLAG8135bb7bc [2022-10-16 00:32:09,064 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 00:32:09,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c [2022-10-16 00:32:09,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c2ab154/010290acb739486e9dd2541a114d71e7/FLAG8135bb7bc [2022-10-16 00:32:09,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02c2ab154/010290acb739486e9dd2541a114d71e7 [2022-10-16 00:32:09,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 00:32:09,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 00:32:09,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 00:32:09,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 00:32:09,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 00:32:09,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42720684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09, skipping insertion in model container [2022-10-16 00:32:09,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 00:32:09,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 00:32:09,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c[334,347] [2022-10-16 00:32:09,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:32:09,692 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 00:32:09,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_base.c[334,347] [2022-10-16 00:32:09,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:32:09,745 INFO L208 MainTranslator]: Completed translation [2022-10-16 00:32:09,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09 WrapperNode [2022-10-16 00:32:09,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 00:32:09,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 00:32:09,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 00:32:09,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 00:32:09,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,803 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-10-16 00:32:09,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 00:32:09,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 00:32:09,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 00:32:09,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 00:32:09,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 00:32:09,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 00:32:09,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 00:32:09,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 00:32:09,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (1/1) ... [2022-10-16 00:32:09,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:32:09,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:09,899 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) [2022-10-16 00:32:09,916 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 [2022-10-16 00:32:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 00:32:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 00:32:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 00:32:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 00:32:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 00:32:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 00:32:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 00:32:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 00:32:10,096 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 00:32:10,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 00:32:10,442 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 00:32:10,457 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 00:32:10,457 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 00:32:10,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:32:10 BoogieIcfgContainer [2022-10-16 00:32:10,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 00:32:10,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 00:32:10,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 00:32:10,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 00:32:10,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:32:09" (1/3) ... [2022-10-16 00:32:10,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60968988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:32:10, skipping insertion in model container [2022-10-16 00:32:10,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:32:09" (2/3) ... [2022-10-16 00:32:10,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60968988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:32:10, skipping insertion in model container [2022-10-16 00:32:10,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:32:10" (3/3) ... [2022-10-16 00:32:10,482 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2022-10-16 00:32:10,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 00:32:10,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-16 00:32:10,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 00:32:10,685 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;@3b0d92ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 00:32:10,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-16 00:32:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:32:10,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:10,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:32:10,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-10-16 00:32:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:10,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454449160] [2022-10-16 00:32:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:11,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:11,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454449160] [2022-10-16 00:32:11,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454449160] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:11,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:11,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:32:11,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099422989] [2022-10-16 00:32:11,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:11,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 00:32:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 00:32:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 00:32:11,114 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:11,138 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-10-16 00:32:11,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 00:32:11,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:32:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:11,153 INFO L225 Difference]: With dead ends: 34 [2022-10-16 00:32:11,154 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 00:32:11,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 00:32:11,163 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:11,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:32:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 00:32:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 00:32:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-10-16 00:32:11,221 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-10-16 00:32:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:11,222 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-10-16 00:32:11,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-10-16 00:32:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:32:11,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:11,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:32:11,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 00:32:11,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2022-10-16 00:32:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905272164] [2022-10-16 00:32:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:11,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:11,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905272164] [2022-10-16 00:32:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905272164] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:11,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:11,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:32:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292054904] [2022-10-16 00:32:11,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 00:32:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 00:32:11,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:32:11,460 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:11,539 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-16 00:32:11,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 00:32:11,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:32:11,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:11,542 INFO L225 Difference]: With dead ends: 28 [2022-10-16 00:32:11,542 INFO L226 Difference]: Without dead ends: 28 [2022-10-16 00:32:11,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:32:11,546 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:11,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:32:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-16 00:32:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-16 00:32:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-16 00:32:11,563 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-10-16 00:32:11,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:11,565 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-16 00:32:11,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-16 00:32:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:32:11,567 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:11,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:32:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 00:32:11,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-10-16 00:32:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:11,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012464773] [2022-10-16 00:32:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:11,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:12,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012464773] [2022-10-16 00:32:12,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012464773] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:12,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:12,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 00:32:12,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865055675] [2022-10-16 00:32:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 00:32:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 00:32:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:32:12,041 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:12,156 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-16 00:32:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:32:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:32:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:12,158 INFO L225 Difference]: With dead ends: 43 [2022-10-16 00:32:12,158 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 00:32:12,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:32:12,161 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 100 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:12,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 26 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:32:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 00:32:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-10-16 00:32:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-10-16 00:32:12,170 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2022-10-16 00:32:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:12,171 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-10-16 00:32:12,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,172 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-10-16 00:32:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:32:12,173 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:12,173 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:12,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 00:32:12,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:12,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash -866549681, now seen corresponding path program 1 times [2022-10-16 00:32:12,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:12,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364198185] [2022-10-16 00:32:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:12,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:12,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364198185] [2022-10-16 00:32:12,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364198185] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:12,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:12,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:32:12,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160632067] [2022-10-16 00:32:12,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:12,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:32:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:32:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:32:12,528 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:12,719 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-16 00:32:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:32:12,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 00:32:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:12,722 INFO L225 Difference]: With dead ends: 43 [2022-10-16 00:32:12,722 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 00:32:12,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:32:12,725 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:12,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:32:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 00:32:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-10-16 00:32:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-10-16 00:32:12,734 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2022-10-16 00:32:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:12,734 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-10-16 00:32:12,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-10-16 00:32:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:32:12,739 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:12,739 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 00:32:12,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -866490099, now seen corresponding path program 1 times [2022-10-16 00:32:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:12,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367387498] [2022-10-16 00:32:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:13,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:13,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367387498] [2022-10-16 00:32:13,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367387498] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247685958] [2022-10-16 00:32:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:13,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:13,119 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) [2022-10-16 00:32:13,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 00:32:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:13,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:32:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:13,399 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 [2022-10-16 00:32:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:13,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:13,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247685958] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:13,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:13,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-10-16 00:32:13,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332968799] [2022-10-16 00:32:13,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:13,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 00:32:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 00:32:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-16 00:32:13,789 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:14,136 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2022-10-16 00:32:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:32:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 00:32:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:14,139 INFO L225 Difference]: With dead ends: 80 [2022-10-16 00:32:14,139 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 00:32:14,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:32:14,141 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 308 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:14,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 59 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:32:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 00:32:14,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2022-10-16 00:32:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 69 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2022-10-16 00:32:14,153 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2022-10-16 00:32:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:14,154 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2022-10-16 00:32:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2022-10-16 00:32:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 00:32:14,156 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:14,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:14,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 00:32:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:14,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1405816076, now seen corresponding path program 1 times [2022-10-16 00:32:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:14,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522301276] [2022-10-16 00:32:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 00:32:14,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:14,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522301276] [2022-10-16 00:32:14,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522301276] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:14,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:14,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:32:14,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113467039] [2022-10-16 00:32:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:32:14,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:32:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:32:14,541 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:14,586 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2022-10-16 00:32:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:32:14,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-16 00:32:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:14,589 INFO L225 Difference]: With dead ends: 125 [2022-10-16 00:32:14,589 INFO L226 Difference]: Without dead ends: 125 [2022-10-16 00:32:14,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:32:14,591 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 56 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:14,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 86 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:32:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-10-16 00:32:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2022-10-16 00:32:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 116 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2022-10-16 00:32:14,622 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 24 [2022-10-16 00:32:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:14,625 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2022-10-16 00:32:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2022-10-16 00:32:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:32:14,627 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:14,627 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 00:32:14,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash 952498338, now seen corresponding path program 1 times [2022-10-16 00:32:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:14,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237904433] [2022-10-16 00:32:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:32:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:14,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237904433] [2022-10-16 00:32:14,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237904433] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:14,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798966769] [2022-10-16 00:32:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:14,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:14,940 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) [2022-10-16 00:32:14,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 00:32:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:15,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 00:32:15,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:15,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-16 00:32:15,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-16 00:32:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:32:15,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:32:15,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798966769] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:15,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:15,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-10-16 00:32:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590824704] [2022-10-16 00:32:15,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 00:32:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 00:32:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:32:15,225 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:15,604 INFO L93 Difference]: Finished difference Result 157 states and 186 transitions. [2022-10-16 00:32:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:32:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 00:32:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:15,607 INFO L225 Difference]: With dead ends: 157 [2022-10-16 00:32:15,607 INFO L226 Difference]: Without dead ends: 157 [2022-10-16 00:32:15,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-10-16 00:32:15,609 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:15,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 103 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:32:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-10-16 00:32:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 122. [2022-10-16 00:32:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.2796610169491525) internal successors, (151), 121 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2022-10-16 00:32:15,622 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 30 [2022-10-16 00:32:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:15,623 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2022-10-16 00:32:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2022-10-16 00:32:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:32:15,625 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:15,625 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 00:32:15,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 00:32:15,839 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,SelfDestructingSolverStorable6 [2022-10-16 00:32:15,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash -461537444, now seen corresponding path program 2 times [2022-10-16 00:32:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:15,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672990979] [2022-10-16 00:32:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672990979] [2022-10-16 00:32:16,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672990979] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:16,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146107141] [2022-10-16 00:32:16,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:32:16,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:16,341 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) [2022-10-16 00:32:16,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 00:32:16,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:32:16,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:32:16,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 00:32:16,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:16,468 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 [2022-10-16 00:32:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:16,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:17,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146107141] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:17,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:17,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2022-10-16 00:32:17,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268793076] [2022-10-16 00:32:17,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:17,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-16 00:32:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-16 00:32:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-10-16 00:32:17,238 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:18,431 INFO L93 Difference]: Finished difference Result 298 states and 341 transitions. [2022-10-16 00:32:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:32:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 00:32:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:18,435 INFO L225 Difference]: With dead ends: 298 [2022-10-16 00:32:18,436 INFO L226 Difference]: Without dead ends: 298 [2022-10-16 00:32:18,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-10-16 00:32:18,438 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 687 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 378 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 00:32:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-16 00:32:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 282. [2022-10-16 00:32:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.1978417266187051) internal successors, (333), 281 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 333 transitions. [2022-10-16 00:32:18,460 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 333 transitions. Word has length 30 [2022-10-16 00:32:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:18,461 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 333 transitions. [2022-10-16 00:32:18,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 333 transitions. [2022-10-16 00:32:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 00:32:18,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:18,464 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1] [2022-10-16 00:32:18,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 00:32:18,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:18,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash -523171898, now seen corresponding path program 2 times [2022-10-16 00:32:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:18,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852940155] [2022-10-16 00:32:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:18,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-10-16 00:32:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852940155] [2022-10-16 00:32:19,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852940155] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:32:19,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:32:19,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:32:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232746488] [2022-10-16 00:32:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:32:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:32:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:32:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:32:19,253 INFO L87 Difference]: Start difference. First operand 282 states and 333 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:19,337 INFO L93 Difference]: Finished difference Result 297 states and 347 transitions. [2022-10-16 00:32:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:32:19,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-16 00:32:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:19,342 INFO L225 Difference]: With dead ends: 297 [2022-10-16 00:32:19,342 INFO L226 Difference]: Without dead ends: 297 [2022-10-16 00:32:19,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:32:19,344 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:19,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 43 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:32:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-10-16 00:32:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 292. [2022-10-16 00:32:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 288 states have (on average 1.1875) internal successors, (342), 291 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 342 transitions. [2022-10-16 00:32:19,358 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 342 transitions. Word has length 66 [2022-10-16 00:32:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:19,359 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 342 transitions. [2022-10-16 00:32:19,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:19,359 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 342 transitions. [2022-10-16 00:32:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 00:32:19,361 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:19,362 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2022-10-16 00:32:19,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 00:32:19,362 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -176842054, now seen corresponding path program 3 times [2022-10-16 00:32:19,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:19,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177272181] [2022-10-16 00:32:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:19,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:32:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:20,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177272181] [2022-10-16 00:32:20,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177272181] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890910493] [2022-10-16 00:32:20,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:32:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:20,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:20,587 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) [2022-10-16 00:32:20,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 00:32:20,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:32:20,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:32:20,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:32:20,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:20,710 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 [2022-10-16 00:32:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 46 proven. 10 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-10-16 00:32:21,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-10-16 00:32:21,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890910493] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:21,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 23 [2022-10-16 00:32:21,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851832027] [2022-10-16 00:32:21,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 00:32:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 00:32:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2022-10-16 00:32:21,888 INFO L87 Difference]: Start difference. First operand 292 states and 342 transitions. Second operand has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 24 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:23,246 INFO L93 Difference]: Finished difference Result 391 states and 445 transitions. [2022-10-16 00:32:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 00:32:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 24 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-16 00:32:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:23,250 INFO L225 Difference]: With dead ends: 391 [2022-10-16 00:32:23,250 INFO L226 Difference]: Without dead ends: 391 [2022-10-16 00:32:23,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2022-10-16 00:32:23,252 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 964 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:23,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 923 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 00:32:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-10-16 00:32:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 346. [2022-10-16 00:32:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 344 states have (on average 1.180232558139535) internal successors, (406), 345 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 406 transitions. [2022-10-16 00:32:23,265 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 406 transitions. Word has length 66 [2022-10-16 00:32:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:23,266 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 406 transitions. [2022-10-16 00:32:23,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 24 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:23,266 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 406 transitions. [2022-10-16 00:32:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 00:32:23,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:23,269 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:23,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 00:32:23,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:23,483 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:23,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1957583308, now seen corresponding path program 1 times [2022-10-16 00:32:23,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:23,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114223669] [2022-10-16 00:32:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:23,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:24,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114223669] [2022-10-16 00:32:24,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114223669] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:24,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157555406] [2022-10-16 00:32:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:24,432 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) [2022-10-16 00:32:24,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 00:32:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:24,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 00:32:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:25,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157555406] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:25,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:25,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2022-10-16 00:32:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186369336] [2022-10-16 00:32:25,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:25,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 00:32:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 00:32:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 00:32:25,790 INFO L87 Difference]: Start difference. First operand 346 states and 406 transitions. Second operand has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 42 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:27,205 INFO L93 Difference]: Finished difference Result 790 states and 894 transitions. [2022-10-16 00:32:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 00:32:27,206 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 42 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-10-16 00:32:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:27,215 INFO L225 Difference]: With dead ends: 790 [2022-10-16 00:32:27,215 INFO L226 Difference]: Without dead ends: 790 [2022-10-16 00:32:27,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2022-10-16 00:32:27,218 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1034 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 320 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 00:32:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-10-16 00:32:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 742. [2022-10-16 00:32:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 740 states have (on average 1.1756756756756757) internal successors, (870), 741 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 870 transitions. [2022-10-16 00:32:27,245 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 870 transitions. Word has length 91 [2022-10-16 00:32:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:27,246 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 870 transitions. [2022-10-16 00:32:27,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.534883720930233) internal successors, (238), 42 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 870 transitions. [2022-10-16 00:32:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-10-16 00:32:27,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:27,250 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:27,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 00:32:27,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 00:32:27,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1766067974, now seen corresponding path program 2 times [2022-10-16 00:32:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212597362] [2022-10-16 00:32:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:30,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:30,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212597362] [2022-10-16 00:32:30,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212597362] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:30,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109741377] [2022-10-16 00:32:30,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:32:30,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:30,554 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) [2022-10-16 00:32:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 00:32:30,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:32:30,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:32:30,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 00:32:30,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:32,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:35,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109741377] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:35,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:35,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 84 [2022-10-16 00:32:35,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177393567] [2022-10-16 00:32:35,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:35,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-10-16 00:32:35,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-10-16 00:32:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=4001, Unknown=0, NotChecked=0, Total=7140 [2022-10-16 00:32:35,246 INFO L87 Difference]: Start difference. First operand 742 states and 870 transitions. Second operand has 85 states, 85 states have (on average 5.764705882352941) internal successors, (490), 84 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:32:41,241 INFO L93 Difference]: Finished difference Result 1644 states and 1860 transitions. [2022-10-16 00:32:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-10-16 00:32:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 5.764705882352941) internal successors, (490), 84 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-10-16 00:32:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:32:41,253 INFO L225 Difference]: With dead ends: 1644 [2022-10-16 00:32:41,253 INFO L226 Difference]: Without dead ends: 1644 [2022-10-16 00:32:41,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4425 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4732, Invalid=7700, Unknown=0, NotChecked=0, Total=12432 [2022-10-16 00:32:41,260 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3031 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 00:32:41,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 568 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 00:32:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-10-16 00:32:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1540. [2022-10-16 00:32:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1538 states have (on average 1.17555266579974) internal successors, (1808), 1539 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1808 transitions. [2022-10-16 00:32:41,313 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1808 transitions. Word has length 175 [2022-10-16 00:32:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:32:41,314 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 1808 transitions. [2022-10-16 00:32:41,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 5.764705882352941) internal successors, (490), 84 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:32:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1808 transitions. [2022-10-16 00:32:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-10-16 00:32:41,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:32:41,320 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 54, 54, 54, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:32:41,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 00:32:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:41,531 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:32:41,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:32:41,532 INFO L85 PathProgramCache]: Analyzing trace with hash 61793914, now seen corresponding path program 3 times [2022-10-16 00:32:41,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:32:41,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508131477] [2022-10-16 00:32:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:32:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:32:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:32:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8645 backedges. 0 proven. 8640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:53,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:53,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508131477] [2022-10-16 00:32:53,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508131477] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:32:53,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176407545] [2022-10-16 00:32:53,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:32:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:32:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:32:53,777 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) [2022-10-16 00:32:53,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 00:32:53,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:32:53,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:32:53,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 00:32:53,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:32:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8645 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 8432 trivial. 0 not checked. [2022-10-16 00:32:55,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8645 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 8432 trivial. 0 not checked. [2022-10-16 00:32:58,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176407545] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:58,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:32:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 5, 5] total 64 [2022-10-16 00:32:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448946115] [2022-10-16 00:32:58,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:58,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-16 00:32:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-16 00:32:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1741, Invalid=2419, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 00:32:58,499 INFO L87 Difference]: Start difference. First operand 1540 states and 1808 transitions. Second operand has 65 states, 65 states have (on average 5.661538461538462) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:35:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:35:05,679 INFO L93 Difference]: Finished difference Result 3470 states and 3957 transitions. [2022-10-16 00:35:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-10-16 00:35:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.661538461538462) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2022-10-16 00:35:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:35:05,702 INFO L225 Difference]: With dead ends: 3470 [2022-10-16 00:35:05,703 INFO L226 Difference]: Without dead ends: 3470 [2022-10-16 00:35:05,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37627 ImplicationChecksByTransitivity, 127.2s TimeCoverageRelationStatistics Valid=28638, Invalid=69018, Unknown=0, NotChecked=0, Total=97656 [2022-10-16 00:35:05,735 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6060 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6060 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:35:05,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6060 Valid, 938 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [985 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-10-16 00:35:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-10-16 00:35:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 1800. [2022-10-16 00:35:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1798 states have (on average 1.1768631813125696) internal successors, (2116), 1799 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:35:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2116 transitions. [2022-10-16 00:35:05,802 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2116 transitions. Word has length 343 [2022-10-16 00:35:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:35:05,804 INFO L495 AbstractCegarLoop]: Abstraction has 1800 states and 2116 transitions. [2022-10-16 00:35:05,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.661538461538462) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:35:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2116 transitions. [2022-10-16 00:35:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-10-16 00:35:05,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:35:05,812 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:35:05,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 00:35:06,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:35:06,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:35:06,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:35:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1296406984, now seen corresponding path program 1 times [2022-10-16 00:35:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:35:06,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22250328] [2022-10-16 00:35:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:35:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:35:06,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:35:06,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039439725] [2022-10-16 00:35:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:35:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:35:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:35:06,117 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) [2022-10-16 00:35:06,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 00:35:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:35:06,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 60 conjunts are in the unsatisfiable core [2022-10-16 00:35:06,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:35:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9638 backedges. 0 proven. 9633 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:35:09,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:36:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9638 backedges. 0 proven. 9633 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:36:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:36:04,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22250328] [2022-10-16 00:36:04,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:36:04,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039439725] [2022-10-16 00:36:04,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039439725] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:36:04,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:36:04,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2022-10-16 00:36:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099725135] [2022-10-16 00:36:04,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:36:04,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-10-16 00:36:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:36:04,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-10-16 00:36:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7024, Invalid=7256, Unknown=0, NotChecked=0, Total=14280 [2022-10-16 00:36:04,913 INFO L87 Difference]: Start difference. First operand 1800 states and 2116 transitions. Second operand has 120 states, 120 states have (on average 5.883333333333334) internal successors, (706), 119 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)