/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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 00:30:01,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 00:30:01,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 00:30:01,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 00:30:01,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 00:30:01,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 00:30:01,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 00:30:01,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 00:30:01,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 00:30:01,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 00:30:01,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 00:30:01,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 00:30:01,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 00:30:01,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 00:30:01,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 00:30:01,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 00:30:01,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 00:30:01,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 00:30:01,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 00:30:01,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 00:30:01,666 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 00:30:01,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 00:30:01,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 00:30:01,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 00:30:01,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 00:30:01,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 00:30:01,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 00:30:01,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 00:30:01,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 00:30:01,713 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 00:30:01,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 00:30:01,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 00:30:01,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 00:30:01,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 00:30:01,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 00:30:01,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 00:30:01,715 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 00:30:01,715 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 00:30:01,715 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 00:30:01,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 00:30:01,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 00:30:01,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 00:30:01,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 00:30:01,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 00:30:01,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 00:30:01,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 00:30:01,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:30:01,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 00:30:01,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 00:30:01,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 00:30:01,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 00:30:01,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 00:30:02,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 00:30:02,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 00:30:02,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 00:30:02,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 00:30:02,090 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 00:30:02,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_2.c [2022-10-16 00:30:02,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df3ecb1/8ba1bef956ff4dbaae82c03335176613/FLAG1b0cf7857 [2022-10-16 00:30:02,807 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 00:30:02,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_2.c [2022-10-16 00:30:02,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df3ecb1/8ba1bef956ff4dbaae82c03335176613/FLAG1b0cf7857 [2022-10-16 00:30:03,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8df3ecb1/8ba1bef956ff4dbaae82c03335176613 [2022-10-16 00:30:03,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 00:30:03,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 00:30:03,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 00:30:03,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 00:30:03,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 00:30:03,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e11e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03, skipping insertion in model container [2022-10-16 00:30:03,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 00:30:03,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 00:30:03,384 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_2.c[323,336] [2022-10-16 00:30:03,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:30:03,416 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 00:30:03,429 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_2.c[323,336] [2022-10-16 00:30:03,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:30:03,454 INFO L208 MainTranslator]: Completed translation [2022-10-16 00:30:03,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03 WrapperNode [2022-10-16 00:30:03,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 00:30:03,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 00:30:03,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 00:30:03,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 00:30:03,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,501 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-10-16 00:30:03,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 00:30:03,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 00:30:03,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 00:30:03,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 00:30:03,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,532 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 00:30:03,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 00:30:03,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 00:30:03,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 00:30:03,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (1/1) ... [2022-10-16 00:30:03,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:30:03,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:03,582 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 00:30:03,591 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 00:30:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 00:30:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 00:30:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 00:30:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 00:30:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 00:30:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 00:30:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 00:30:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 00:30:03,767 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 00:30:03,770 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 00:30:04,098 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 00:30:04,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 00:30:04,106 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 00:30:04,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:04 BoogieIcfgContainer [2022-10-16 00:30:04,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 00:30:04,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 00:30:04,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 00:30:04,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 00:30:04,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:03" (1/3) ... [2022-10-16 00:30:04,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438bbbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:04, skipping insertion in model container [2022-10-16 00:30:04,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:03" (2/3) ... [2022-10-16 00:30:04,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438bbbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:30:04, skipping insertion in model container [2022-10-16 00:30:04,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:30:04" (3/3) ... [2022-10-16 00:30:04,136 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_2.c [2022-10-16 00:30:04,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 00:30:04,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-16 00:30:04,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 00:30:04,300 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;@6c28b80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 00:30:04,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-16 00:30:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 states have internal predecessors, (34), 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 00:30:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 00:30:04,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:04,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 00:30:04,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-16 00:30:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303991037] [2022-10-16 00:30:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:04,646 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 00:30:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:04,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303991037] [2022-10-16 00:30:04,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303991037] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:04,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:04,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:30:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415974937] [2022-10-16 00:30:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:04,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 00:30:04,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:04,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 00:30:04,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:30:04,716 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:04,783 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-10-16 00:30:04,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 00:30:04,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 00:30:04,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:04,796 INFO L225 Difference]: With dead ends: 25 [2022-10-16 00:30:04,796 INFO L226 Difference]: Without dead ends: 23 [2022-10-16 00:30:04,798 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 00:30:04,803 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:04,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:30:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-16 00:30:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-16 00:30:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 states have internal predecessors, (26), 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 00:30:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-10-16 00:30:04,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2022-10-16 00:30:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:04,842 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-10-16 00:30:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:04,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-10-16 00:30:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 00:30:04,843 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:04,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 00:30:04,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 00:30:04,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:04,845 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-16 00:30:04,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:04,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214769453] [2022-10-16 00:30:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:05,117 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 00:30:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214769453] [2022-10-16 00:30:05,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214769453] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:05,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:05,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 00:30:05,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859673060] [2022-10-16 00:30:05,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:30:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:30:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:30:05,123 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:05,213 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-10-16 00:30:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 00:30:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 00:30:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:05,215 INFO L225 Difference]: With dead ends: 27 [2022-10-16 00:30:05,216 INFO L226 Difference]: Without dead ends: 27 [2022-10-16 00:30:05,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:30:05,218 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:05,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-16 00:30:05,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-10-16 00:30:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 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 00:30:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-10-16 00:30:05,226 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 4 [2022-10-16 00:30:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:05,227 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-10-16 00:30:05,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-10-16 00:30:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 00:30:05,228 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:05,228 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 00:30:05,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash 264651177, now seen corresponding path program 1 times [2022-10-16 00:30:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222532896] [2022-10-16 00:30:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:05,565 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 00:30:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:05,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222532896] [2022-10-16 00:30:05,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222532896] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:30:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429860100] [2022-10-16 00:30:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:05,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:05,570 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 00:30:05,586 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 00:30:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:30:05,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:05,765 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 00:30:05,889 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 00:30:05,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:06,051 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 00:30:06,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429860100] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:06,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:30:06,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 9 [2022-10-16 00:30:06,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957013339] [2022-10-16 00:30:06,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:06,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 00:30:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 00:30:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-10-16 00:30:06,062 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 00:30:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:06,297 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-10-16 00:30:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:30:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 00:30:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:06,302 INFO L225 Difference]: With dead ends: 39 [2022-10-16 00:30:06,302 INFO L226 Difference]: Without dead ends: 39 [2022-10-16 00:30:06,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:30:06,310 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 106 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:06,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-16 00:30:06,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-10-16 00:30:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-10-16 00:30:06,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 8 [2022-10-16 00:30:06,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:06,331 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-10-16 00:30:06,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 00:30:06,332 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-10-16 00:30:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 00:30:06,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:06,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:06,366 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 00:30:06,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:06,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1080027457, now seen corresponding path program 1 times [2022-10-16 00:30:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:06,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434306522] [2022-10-16 00:30:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 00:30:06,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434306522] [2022-10-16 00:30:06,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434306522] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:30:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384649674] [2022-10-16 00:30:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:06,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:06,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:06,770 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 00:30:06,793 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 00:30:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:06,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 00:30:06,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:06,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:07,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384649674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:07,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:30:07,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-10-16 00:30:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722280407] [2022-10-16 00:30:07,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 00:30:07,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 00:30:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-10-16 00:30:07,013 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 00:30:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:07,335 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2022-10-16 00:30:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 00:30:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 14 [2022-10-16 00:30:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:07,337 INFO L225 Difference]: With dead ends: 96 [2022-10-16 00:30:07,338 INFO L226 Difference]: Without dead ends: 96 [2022-10-16 00:30:07,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2022-10-16 00:30:07,339 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 425 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:07,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 56 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:30:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-16 00:30:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2022-10-16 00:30:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.3116883116883118) internal successors, (101), 80 states have internal predecessors, (101), 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 00:30:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2022-10-16 00:30:07,351 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 14 [2022-10-16 00:30:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:07,351 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2022-10-16 00:30:07,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 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 00:30:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2022-10-16 00:30:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 00:30:07,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:07,353 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2022-10-16 00:30:07,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:07,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 00:30:07,567 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:07,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1229902638, now seen corresponding path program 2 times [2022-10-16 00:30:07,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:07,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067887425] [2022-10-16 00:30:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:07,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:07,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067887425] [2022-10-16 00:30:07,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067887425] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 00:30:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436223553] [2022-10-16 00:30:07,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:30:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:07,912 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 00:30:07,940 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 00:30:07,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:30:07,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:07,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 00:30:07,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:08,022 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 00:30:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:08,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:08,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436223553] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:08,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 00:30:08,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-10-16 00:30:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478591395] [2022-10-16 00:30:08,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 00:30:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 00:30:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-16 00:30:08,747 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:09,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:09,305 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2022-10-16 00:30:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 00:30:09,306 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 00:30:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:09,307 INFO L225 Difference]: With dead ends: 97 [2022-10-16 00:30:09,307 INFO L226 Difference]: Without dead ends: 97 [2022-10-16 00:30:09,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=607, Unknown=0, NotChecked=0, Total=930 [2022-10-16 00:30:09,309 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 164 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:09,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 236 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 00:30:09,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-10-16 00:30:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2022-10-16 00:30:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 78 states have internal predecessors, (94), 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 00:30:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2022-10-16 00:30:09,320 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 20 [2022-10-16 00:30:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:09,320 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2022-10-16 00:30:09,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.95) internal successors, (59), 21 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2022-10-16 00:30:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 00:30:09,322 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:09,322 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:09,369 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 00:30:09,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:09,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -593068151, now seen corresponding path program 1 times [2022-10-16 00:30:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:09,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362536210] [2022-10-16 00:30:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:09,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:09,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579358402] [2022-10-16 00:30:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:09,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:09,566 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 00:30:09,584 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 00:30:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:09,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 00:30:09,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:09,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362536210] [2022-10-16 00:30:09,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579358402] [2022-10-16 00:30:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579358402] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:09,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:09,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-16 00:30:09,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177122592] [2022-10-16 00:30:09,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 00:30:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 00:30:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:30:09,942 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 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 00:30:10,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:10,355 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2022-10-16 00:30:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 00:30:10,356 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 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 36 [2022-10-16 00:30:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:10,358 INFO L225 Difference]: With dead ends: 204 [2022-10-16 00:30:10,358 INFO L226 Difference]: Without dead ends: 204 [2022-10-16 00:30:10,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=335, Unknown=0, NotChecked=0, Total=600 [2022-10-16 00:30:10,360 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 752 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:10,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 92 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 00:30:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-10-16 00:30:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2022-10-16 00:30:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 170 states have internal predecessors, (206), 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 00:30:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 206 transitions. [2022-10-16 00:30:10,374 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 206 transitions. Word has length 36 [2022-10-16 00:30:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:10,374 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 206 transitions. [2022-10-16 00:30:10,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 17 states have internal predecessors, (65), 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 00:30:10,375 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 206 transitions. [2022-10-16 00:30:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 00:30:10,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:10,377 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:10,419 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 00:30:10,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:10,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:10,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1325243691, now seen corresponding path program 2 times [2022-10-16 00:30:10,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:10,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866581366] [2022-10-16 00:30:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:10,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:10,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131581257] [2022-10-16 00:30:10,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:30:10,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:10,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:10,617 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 00:30:10,638 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 00:30:10,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 00:30:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 00:30:10,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-10-16 00:30:10,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:30:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:10,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866581366] [2022-10-16 00:30:10,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:10,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131581257] [2022-10-16 00:30:10,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131581257] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:30:10,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:30:10,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:30:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104354229] [2022-10-16 00:30:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:30:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 00:30:10,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 00:30:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:30:10,986 INFO L87 Difference]: Start difference. First operand 171 states and 206 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:11,040 INFO L93 Difference]: Finished difference Result 374 states and 433 transitions. [2022-10-16 00:30:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:30:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-10-16 00:30:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:11,043 INFO L225 Difference]: With dead ends: 374 [2022-10-16 00:30:11,043 INFO L226 Difference]: Without dead ends: 374 [2022-10-16 00:30:11,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-10-16 00:30:11,044 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:11,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 54 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:30:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-10-16 00:30:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 356. [2022-10-16 00:30:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 354 states have (on average 1.1779661016949152) internal successors, (417), 355 states have internal predecessors, (417), 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 00:30:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 417 transitions. [2022-10-16 00:30:11,063 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 417 transitions. Word has length 72 [2022-10-16 00:30:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:11,064 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 417 transitions. [2022-10-16 00:30:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:30:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 417 transitions. [2022-10-16 00:30:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-16 00:30:11,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:11,067 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:11,107 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 00:30:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:11,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 470625899, now seen corresponding path program 1 times [2022-10-16 00:30:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:11,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291422049] [2022-10-16 00:30:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:11,315 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:11,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013364016] [2022-10-16 00:30:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:11,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:11,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:11,317 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 00:30:11,342 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 00:30:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:30:11,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 00:30:11,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:30:11,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:30:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291422049] [2022-10-16 00:30:12,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013364016] [2022-10-16 00:30:12,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013364016] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:12,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:12,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-16 00:30:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589444952] [2022-10-16 00:30:12,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 00:30:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 00:30:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 00:30:12,350 INFO L87 Difference]: Start difference. First operand 356 states and 417 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 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 00:30:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:13,687 INFO L93 Difference]: Finished difference Result 847 states and 957 transitions. [2022-10-16 00:30:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-16 00:30:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 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 79 [2022-10-16 00:30:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:13,693 INFO L225 Difference]: With dead ends: 847 [2022-10-16 00:30:13,693 INFO L226 Difference]: Without dead ends: 847 [2022-10-16 00:30:13,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 00:30:13,695 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1140 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:13,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 198 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 00:30:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-10-16 00:30:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 764. [2022-10-16 00:30:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 762 states have (on average 1.1771653543307086) internal successors, (897), 763 states have internal predecessors, (897), 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 00:30:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 897 transitions. [2022-10-16 00:30:13,721 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 897 transitions. Word has length 79 [2022-10-16 00:30:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:13,721 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 897 transitions. [2022-10-16 00:30:13,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 33 states have internal predecessors, (140), 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 00:30:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 897 transitions. [2022-10-16 00:30:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-16 00:30:13,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:13,727 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 16, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:13,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:13,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:13,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1985587411, now seen corresponding path program 2 times [2022-10-16 00:30:13,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:13,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307707377] [2022-10-16 00:30:13,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:13,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:13,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:13,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108604619] [2022-10-16 00:30:13,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:30:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:13,995 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 00:30:14,012 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 00:30:14,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:30:14,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:14,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 00:30:14,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:30:15,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1866 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:30:17,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:17,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307707377] [2022-10-16 00:30:17,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:17,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108604619] [2022-10-16 00:30:17,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108604619] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:17,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:17,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-16 00:30:17,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32375975] [2022-10-16 00:30:17,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-16 00:30:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-16 00:30:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 00:30:17,106 INFO L87 Difference]: Start difference. First operand 764 states and 897 transitions. Second operand has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 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 00:30:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:22,150 INFO L93 Difference]: Finished difference Result 1767 states and 1997 transitions. [2022-10-16 00:30:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 00:30:22,154 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 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 151 [2022-10-16 00:30:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:22,164 INFO L225 Difference]: With dead ends: 1767 [2022-10-16 00:30:22,165 INFO L226 Difference]: Without dead ends: 1767 [2022-10-16 00:30:22,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 00:30:22,170 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2922 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:22,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 384 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 00:30:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-10-16 00:30:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1580. [2022-10-16 00:30:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.1768060836501901) internal successors, (1857), 1579 states have internal predecessors, (1857), 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 00:30:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1857 transitions. [2022-10-16 00:30:22,211 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1857 transitions. Word has length 151 [2022-10-16 00:30:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:22,212 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 1857 transitions. [2022-10-16 00:30:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.303030303030303) internal successors, (284), 65 states have internal predecessors, (284), 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 00:30:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1857 transitions. [2022-10-16 00:30:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-10-16 00:30:22,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:22,217 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 32, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:22,258 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 00:30:22,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:22,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1117261219, now seen corresponding path program 3 times [2022-10-16 00:30:22,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:22,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992307275] [2022-10-16 00:30:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:22,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:22,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:22,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765690331] [2022-10-16 00:30:22,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:30:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:22,534 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 00:30:22,548 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 00:30:22,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:30:22,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:22,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 00:30:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8061 trivial. 0 not checked. [2022-10-16 00:30:23,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8066 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8061 trivial. 0 not checked. [2022-10-16 00:30:28,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:28,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992307275] [2022-10-16 00:30:28,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:28,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765690331] [2022-10-16 00:30:28,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765690331] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:28,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:28,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-16 00:30:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196842841] [2022-10-16 00:30:28,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 00:30:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 00:30:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-10-16 00:30:28,304 INFO L87 Difference]: Start difference. First operand 1580 states and 1857 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 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 00:30:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:30:28,522 INFO L93 Difference]: Finished difference Result 3284 states and 3785 transitions. [2022-10-16 00:30:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 00:30:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 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 295 [2022-10-16 00:30:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:30:28,542 INFO L225 Difference]: With dead ends: 3284 [2022-10-16 00:30:28,542 INFO L226 Difference]: Without dead ends: 3284 [2022-10-16 00:30:28,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:30:28,544 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 170 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:30:28,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 98 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:30:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-10-16 00:30:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 3210. [2022-10-16 00:30:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3208 states have (on average 1.1586658354114714) internal successors, (3717), 3209 states have internal predecessors, (3717), 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 00:30:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 3717 transitions. [2022-10-16 00:30:28,635 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 3717 transitions. Word has length 295 [2022-10-16 00:30:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:30:28,636 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 3717 transitions. [2022-10-16 00:30:28,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 10 states have internal predecessors, (44), 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 00:30:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 3717 transitions. [2022-10-16 00:30:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-10-16 00:30:28,640 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:30:28,641 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 32, 30, 30, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-10-16 00:30:28,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 00:30:28,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 00:30:28,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-10-16 00:30:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:30:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1817056035, now seen corresponding path program 4 times [2022-10-16 00:30:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:30:28,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887805491] [2022-10-16 00:30:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:30:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:30:28,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:30:28,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046859659] [2022-10-16 00:30:28,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 00:30:28,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:30:28,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:30:28,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 00:30:28,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 00:30:29,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 00:30:29,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:30:29,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 73 conjunts are in the unsatisfiable core [2022-10-16 00:30:29,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:30:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8156 backedges. 7787 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:32,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:30:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8156 backedges. 7787 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:30:41,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:30:41,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887805491] [2022-10-16 00:30:41,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:30:41,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046859659] [2022-10-16 00:30:41,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046859659] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:30:41,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:30:41,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 141 [2022-10-16 00:30:41,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917664702] [2022-10-16 00:30:41,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:30:41,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-10-16 00:30:41,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:30:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-10-16 00:30:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7618, Invalid=12122, Unknown=0, NotChecked=0, Total=19740 [2022-10-16 00:30:41,547 INFO L87 Difference]: Start difference. First operand 3210 states and 3717 transitions. Second operand has 141 states, 141 states have (on average 4.560283687943262) internal successors, (643), 141 states have internal predecessors, (643), 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)