/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/reducercommutativity/sep05-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 02:21:55,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 02:21:55,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 02:21:56,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 02:21:56,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 02:21:56,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 02:21:56,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 02:21:56,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 02:21:56,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 02:21:56,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 02:21:56,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 02:21:56,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 02:21:56,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 02:21:56,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 02:21:56,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 02:21:56,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 02:21:56,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 02:21:56,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 02:21:56,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 02:21:56,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 02:21:56,091 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 02:21:56,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 02:21:56,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 02:21:56,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 02:21:56,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 02:21:56,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 02:21:56,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 02:21:56,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 02:21:56,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 02:21:56,155 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 02:21:56,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 02:21:56,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 02:21:56,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 02:21:56,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 02:21:56,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 02:21:56,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 02:21:56,159 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 02:21:56,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 02:21:56,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 02:21:56,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 02:21:56,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 02:21:56,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:21:56,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 02:21:56,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 02:21:56,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 02:21:56,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 02:21:56,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 02:21:56,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 02:21:56,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 02:21:56,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 02:21:56,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 02:21:56,579 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 02:21:56,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep05-2.i [2022-10-16 02:21:56,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ff89bb8/6b6ffa7630284c1e98d41350075969fe/FLAG1bfa90567 [2022-10-16 02:21:57,226 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 02:21:57,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-2.i [2022-10-16 02:21:57,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ff89bb8/6b6ffa7630284c1e98d41350075969fe/FLAG1bfa90567 [2022-10-16 02:21:57,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ff89bb8/6b6ffa7630284c1e98d41350075969fe [2022-10-16 02:21:57,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 02:21:57,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 02:21:57,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 02:21:57,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 02:21:57,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 02:21:57,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36abaa0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57, skipping insertion in model container [2022-10-16 02:21:57,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 02:21:57,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 02:21:57,789 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-2.i[1178,1191] [2022-10-16 02:21:57,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:21:57,811 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 02:21:57,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep05-2.i[1178,1191] [2022-10-16 02:21:57,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 02:21:57,882 INFO L208 MainTranslator]: Completed translation [2022-10-16 02:21:57,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57 WrapperNode [2022-10-16 02:21:57,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 02:21:57,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 02:21:57,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 02:21:57,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 02:21:57,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,959 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-10-16 02:21:57,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 02:21:57,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 02:21:57,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 02:21:57,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 02:21:57,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,997 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:57,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:58,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 02:21:58,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 02:21:58,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 02:21:58,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 02:21:58,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (1/1) ... [2022-10-16 02:21:58,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 02:21:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:21:58,050 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 02:21:58,070 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 02:21:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 02:21:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 02:21:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 02:21:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 02:21:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 02:21:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 02:21:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 02:21:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 02:21:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-10-16 02:21:58,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-10-16 02:21:58,226 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 02:21:58,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 02:21:58,479 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 02:21:58,488 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 02:21:58,488 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 02:21:58,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:21:58 BoogieIcfgContainer [2022-10-16 02:21:58,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 02:21:58,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 02:21:58,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 02:21:58,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 02:21:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:21:57" (1/3) ... [2022-10-16 02:21:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660c136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:21:58, skipping insertion in model container [2022-10-16 02:21:58,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:21:57" (2/3) ... [2022-10-16 02:21:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660c136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:21:58, skipping insertion in model container [2022-10-16 02:21:58,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:21:58" (3/3) ... [2022-10-16 02:21:58,502 INFO L112 eAbstractionObserver]: Analyzing ICFG sep05-2.i [2022-10-16 02:21:58,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 02:21:58,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-16 02:21:58,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 02:21:58,648 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;@2c885aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 02:21:58,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-16 02:21:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:21:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 02:21:58,674 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:21:58,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 02:21:58,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sepErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:21:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:21:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash 892005357, now seen corresponding path program 1 times [2022-10-16 02:21:58,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:21:58,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24146167] [2022-10-16 02:21:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:21:58,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:21:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:21:59,129 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 02:21:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:21:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24146167] [2022-10-16 02:21:59,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24146167] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:21:59,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:21:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:21:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660688160] [2022-10-16 02:21:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:21:59,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:21:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:21:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:21:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:21:59,177 INFO L87 Difference]: Start difference. First operand has 56 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:21:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:21:59,343 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-10-16 02:21:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:21:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 02:21:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:21:59,360 INFO L225 Difference]: With dead ends: 47 [2022-10-16 02:21:59,361 INFO L226 Difference]: Without dead ends: 45 [2022-10-16 02:21:59,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:21:59,368 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:21:59,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 64 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:21:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-16 02:21:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-16 02:21:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:21:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-10-16 02:21:59,418 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 6 [2022-10-16 02:21:59,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:21:59,419 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-10-16 02:21:59,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:21:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-10-16 02:21:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 02:21:59,420 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:21:59,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 02:21:59,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 02:21:59,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:21:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:21:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 892005358, now seen corresponding path program 1 times [2022-10-16 02:21:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:21:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692367692] [2022-10-16 02:21:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:21:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:21:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:21:59,706 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 02:21:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:21:59,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692367692] [2022-10-16 02:21:59,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692367692] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:21:59,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:21:59,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 02:21:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532815518] [2022-10-16 02:21:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:21:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 02:21:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:21:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 02:21:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 02:21:59,711 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:21:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:21:59,827 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-16 02:21:59,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 02:21:59,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 02:21:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:21:59,829 INFO L225 Difference]: With dead ends: 43 [2022-10-16 02:21:59,829 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 02:21:59,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 02:21:59,832 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:21:59,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:21:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 02:21:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-10-16 02:21:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:21:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-10-16 02:21:59,843 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 6 [2022-10-16 02:21:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:21:59,843 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-10-16 02:21:59,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:21:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-10-16 02:21:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 02:21:59,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:21:59,845 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:21:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 02:21:59,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:21:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:21:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1931522189, now seen corresponding path program 1 times [2022-10-16 02:21:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:21:59,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43014640] [2022-10-16 02:21:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:21:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:21:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:00,260 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 02:22:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:00,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43014640] [2022-10-16 02:22:00,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43014640] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:00,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445210282] [2022-10-16 02:22:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:00,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:00,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:00,272 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 02:22:00,281 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 02:22:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:00,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 02:22:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:00,451 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 02:22:00,559 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 02:22:00,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:00,722 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 02:22:00,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445210282] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:00,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:00,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-16 02:22:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360688052] [2022-10-16 02:22:00,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 02:22:00,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 02:22:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-16 02:22:00,733 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:00,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:00,996 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2022-10-16 02:22:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:22:00,997 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 02:22:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:01,004 INFO L225 Difference]: With dead ends: 59 [2022-10-16 02:22:01,004 INFO L226 Difference]: Without dead ends: 59 [2022-10-16 02:22:01,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-10-16 02:22:01,013 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 103 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:01,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 116 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:22:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-16 02:22:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2022-10-16 02:22:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:22:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-10-16 02:22:01,046 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 10 [2022-10-16 02:22:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:01,047 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-10-16 02:22:01,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-10-16 02:22:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 02:22:01,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:01,048 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 02:22:01,090 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 02:22:01,265 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 02:22:01,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:01,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1182120706, now seen corresponding path program 2 times [2022-10-16 02:22:01,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:01,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208130155] [2022-10-16 02:22:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:01,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:01,602 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 02:22:01,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:01,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208130155] [2022-10-16 02:22:01,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208130155] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:01,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181471040] [2022-10-16 02:22:01,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:22:01,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:01,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:01,611 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 02:22:01,635 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 02:22:01,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:22:01,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:22:01,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 02:22:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:01,709 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 02:22:01,927 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 02:22:01,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:02,160 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 02:22:02,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181471040] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:02,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:02,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-10-16 02:22:02,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024433336] [2022-10-16 02:22:02,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 02:22:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 02:22:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-10-16 02:22:02,166 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:02,513 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-10-16 02:22:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 02:22:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-16 02:22:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:02,516 INFO L225 Difference]: With dead ends: 59 [2022-10-16 02:22:02,516 INFO L226 Difference]: Without dead ends: 59 [2022-10-16 02:22:02,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2022-10-16 02:22:02,521 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 76 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 258 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 02:22:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-16 02:22:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2022-10-16 02:22:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:22:02,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2022-10-16 02:22:02,546 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 22 [2022-10-16 02:22:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:02,549 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2022-10-16 02:22:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2022-10-16 02:22:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 02:22:02,551 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:02,551 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2022-10-16 02:22:02,593 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 02:22:02,766 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 02:22:02,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:02,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1329886343, now seen corresponding path program 3 times [2022-10-16 02:22:02,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:02,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419053986] [2022-10-16 02:22:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 02:22:03,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419053986] [2022-10-16 02:22:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419053986] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979628049] [2022-10-16 02:22:03,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 02:22:03,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:03,087 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 02:22:03,111 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 02:22:03,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 02:22:03,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:22:03,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 02:22:03,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:03,166 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 02:22:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 02:22:03,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 02:22:03,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979628049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:22:03,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 02:22:03,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2022-10-16 02:22:03,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592323402] [2022-10-16 02:22:03,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:22:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 02:22:03,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 02:22:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-10-16 02:22:03,343 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:03,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:03,482 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-10-16 02:22:03,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 02:22:03,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 02:22:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:03,486 INFO L225 Difference]: With dead ends: 56 [2022-10-16 02:22:03,486 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 02:22:03,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-10-16 02:22:03,496 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 94 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 02:22:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 02:22:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-10-16 02:22:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 50 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:22:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-10-16 02:22:03,503 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 26 [2022-10-16 02:22:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:03,503 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-10-16 02:22:03,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 02:22:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-10-16 02:22:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 02:22:03,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:03,506 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:22:03,542 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 02:22:03,720 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 02:22:03,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash -841571502, now seen corresponding path program 1 times [2022-10-16 02:22:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:03,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981854046] [2022-10-16 02:22:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:22:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:22:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-16 02:22:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:04,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981854046] [2022-10-16 02:22:04,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981854046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 02:22:04,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 02:22:04,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 02:22:04,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375089719] [2022-10-16 02:22:04,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 02:22:04,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 02:22:04,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:04,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 02:22:04,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 02:22:04,052 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 02:22:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:04,097 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-10-16 02:22:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 02:22:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-10-16 02:22:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:04,099 INFO L225 Difference]: With dead ends: 60 [2022-10-16 02:22:04,099 INFO L226 Difference]: Without dead ends: 60 [2022-10-16 02:22:04,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 02:22:04,100 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:04,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 56 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 02:22:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-16 02:22:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-10-16 02:22:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.2) internal successors, (60), 53 states have internal predecessors, (60), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:22:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-10-16 02:22:04,106 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 66 [2022-10-16 02:22:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-10-16 02:22:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 02:22:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-10-16 02:22:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 02:22:04,108 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:04,109 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:22:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 02:22:04,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash 409507129, now seen corresponding path program 1 times [2022-10-16 02:22:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:04,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243589762] [2022-10-16 02:22:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:22:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:22:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-16 02:22:04,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:04,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243589762] [2022-10-16 02:22:04,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243589762] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:04,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019957684] [2022-10-16 02:22:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:04,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:04,537 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 02:22:04,558 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 02:22:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:04,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 02:22:04,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:04,659 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 02:22:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-16 02:22:04,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-10-16 02:22:05,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019957684] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:05,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:05,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2022-10-16 02:22:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684448530] [2022-10-16 02:22:05,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:05,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 02:22:05,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 02:22:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-10-16 02:22:05,106 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 02:22:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:05,244 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2022-10-16 02:22:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 02:22:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 71 [2022-10-16 02:22:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:05,246 INFO L225 Difference]: With dead ends: 94 [2022-10-16 02:22:05,246 INFO L226 Difference]: Without dead ends: 94 [2022-10-16 02:22:05,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-10-16 02:22:05,247 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 54 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:05,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 108 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-10-16 02:22:05,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-16 02:22:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-16 02:22:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 1.160919540229885) internal successors, (101), 88 states have internal predecessors, (101), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 02:22:05,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2022-10-16 02:22:05,255 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 71 [2022-10-16 02:22:05,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:05,256 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2022-10-16 02:22:05,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.916666666666667) internal successors, (71), 13 states have internal predecessors, (71), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 02:22:05,256 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2022-10-16 02:22:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:22:05,258 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:05,258 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:22:05,287 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 02:22:05,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:05,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:05,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1527879199, now seen corresponding path program 1 times [2022-10-16 02:22:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:05,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873221175] [2022-10-16 02:22:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:22:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:22:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:22:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-16 02:22:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873221175] [2022-10-16 02:22:08,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873221175] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:08,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082250269] [2022-10-16 02:22:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:08,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:08,216 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 02:22:08,240 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 02:22:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:08,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 56 conjunts are in the unsatisfiable core [2022-10-16 02:22:08,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-16 02:22:09,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 409 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-10-16 02:22:09,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082250269] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:09,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:09,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 25 [2022-10-16 02:22:09,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462505493] [2022-10-16 02:22:09,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:09,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 02:22:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 02:22:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-10-16 02:22:09,776 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:22:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:10,132 INFO L93 Difference]: Finished difference Result 303 states and 378 transitions. [2022-10-16 02:22:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 02:22:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 115 [2022-10-16 02:22:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:10,137 INFO L225 Difference]: With dead ends: 303 [2022-10-16 02:22:10,138 INFO L226 Difference]: Without dead ends: 303 [2022-10-16 02:22:10,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 222 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-10-16 02:22:10,139 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 68 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:10,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1387 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 02:22:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-10-16 02:22:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 236. [2022-10-16 02:22:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 225 states have (on average 1.2177777777777778) internal successors, (274), 227 states have internal predecessors, (274), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 02:22:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 289 transitions. [2022-10-16 02:22:10,164 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 289 transitions. Word has length 115 [2022-10-16 02:22:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 289 transitions. [2022-10-16 02:22:10,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 20 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 02:22:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 289 transitions. [2022-10-16 02:22:10,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:22:10,172 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:10,172 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:22:10,210 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 02:22:10,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:10,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash -847820829, now seen corresponding path program 1 times [2022-10-16 02:22:10,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:10,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92080044] [2022-10-16 02:22:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:10,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:12,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:22:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:22:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:22:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 116 proven. 308 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-16 02:22:13,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:13,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92080044] [2022-10-16 02:22:13,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92080044] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621031544] [2022-10-16 02:22:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:13,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:13,598 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 02:22:13,603 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 02:22:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:13,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 45 conjunts are in the unsatisfiable core [2022-10-16 02:22:13,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:14,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-10-16 02:22:14,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-16 02:22:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 232 proven. 170 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-16 02:22:14,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:15,855 INFO L356 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2022-10-16 02:22:15,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-10-16 02:22:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 241 proven. 159 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-10-16 02:22:15,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621031544] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:15,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:15,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 16] total 46 [2022-10-16 02:22:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318713739] [2022-10-16 02:22:15,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:15,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 02:22:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:15,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 02:22:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1915, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 02:22:15,921 INFO L87 Difference]: Start difference. First operand 236 states and 289 transitions. Second operand has 46 states, 44 states have (on average 3.6818181818181817) internal successors, (162), 45 states have internal predecessors, (162), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 02:22:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:22:19,577 INFO L93 Difference]: Finished difference Result 703 states and 922 transitions. [2022-10-16 02:22:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-10-16 02:22:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 3.6818181818181817) internal successors, (162), 45 states have internal predecessors, (162), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 115 [2022-10-16 02:22:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:22:19,586 INFO L225 Difference]: With dead ends: 703 [2022-10-16 02:22:19,586 INFO L226 Difference]: Without dead ends: 666 [2022-10-16 02:22:19,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2189 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=646, Invalid=6664, Unknown=0, NotChecked=0, Total=7310 [2022-10-16 02:22:19,591 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 261 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 847 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 02:22:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1010 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1188 Invalid, 0 Unknown, 847 Unchecked, 1.1s Time] [2022-10-16 02:22:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-10-16 02:22:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 398. [2022-10-16 02:22:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 380 states have (on average 1.2184210526315788) internal successors, (463), 384 states have internal predecessors, (463), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (30), 9 states have call predecessors, (30), 8 states have call successors, (30) [2022-10-16 02:22:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 501 transitions. [2022-10-16 02:22:19,621 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 501 transitions. Word has length 115 [2022-10-16 02:22:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:22:19,622 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 501 transitions. [2022-10-16 02:22:19,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 3.6818181818181817) internal successors, (162), 45 states have internal predecessors, (162), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 02:22:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 501 transitions. [2022-10-16 02:22:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:22:19,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:22:19,626 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:22:19,656 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 02:22:19,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:19,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:22:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:22:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2114685213, now seen corresponding path program 2 times [2022-10-16 02:22:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:22:19,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185010515] [2022-10-16 02:22:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:22:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:22:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:22:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:22:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:22:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:22:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 116 proven. 350 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 02:22:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:22:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185010515] [2022-10-16 02:22:23,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185010515] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:22:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257338606] [2022-10-16 02:22:23,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 02:22:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:22:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:22:23,279 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 02:22:23,286 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 02:22:23,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 02:22:23,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:22:23,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 63 conjunts are in the unsatisfiable core [2022-10-16 02:22:23,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:22:24,044 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:22:24,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-10-16 02:22:24,164 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:22:24,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-10-16 02:22:24,284 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-10-16 02:22:24,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-10-16 02:22:24,476 INFO L356 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2022-10-16 02:22:24,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2022-10-16 02:22:24,603 INFO L356 Elim1Store]: treesize reduction 53, result has 5.4 percent of original size [2022-10-16 02:22:24,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 30 [2022-10-16 02:22:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 244 proven. 222 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 02:22:36,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:22:49,873 INFO L356 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2022-10-16 02:22:49,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-10-16 02:22:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 250 proven. 214 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-16 02:22:50,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257338606] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:22:50,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:22:50,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 25] total 69 [2022-10-16 02:22:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949579137] [2022-10-16 02:22:50,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:22:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-10-16 02:22:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:22:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-10-16 02:22:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4398, Unknown=22, NotChecked=0, Total=4692 [2022-10-16 02:22:50,277 INFO L87 Difference]: Start difference. First operand 398 states and 501 transitions. Second operand has 69 states, 68 states have (on average 3.426470588235294) internal successors, (233), 68 states have internal predecessors, (233), 5 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-10-16 02:23:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:23:16,393 INFO L93 Difference]: Finished difference Result 1136 states and 1567 transitions. [2022-10-16 02:23:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-16 02:23:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 3.426470588235294) internal successors, (233), 68 states have internal predecessors, (233), 5 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 115 [2022-10-16 02:23:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:23:16,403 INFO L225 Difference]: With dead ends: 1136 [2022-10-16 02:23:16,403 INFO L226 Difference]: Without dead ends: 1075 [2022-10-16 02:23:16,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 235 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=817, Invalid=11360, Unknown=33, NotChecked=0, Total=12210 [2022-10-16 02:23:16,409 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 202 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1326 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 02:23:16,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2097 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1759 Invalid, 0 Unknown, 1326 Unchecked, 1.3s Time] [2022-10-16 02:23:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2022-10-16 02:23:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 916. [2022-10-16 02:23:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 875 states have (on average 1.2457142857142858) internal successors, (1090), 891 states have internal predecessors, (1090), 15 states have call successors, (15), 8 states have call predecessors, (15), 24 states have return successors, (136), 16 states have call predecessors, (136), 15 states have call successors, (136) [2022-10-16 02:23:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1241 transitions. [2022-10-16 02:23:16,463 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1241 transitions. Word has length 115 [2022-10-16 02:23:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:23:16,463 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1241 transitions. [2022-10-16 02:23:16,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 3.426470588235294) internal successors, (233), 68 states have internal predecessors, (233), 5 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-10-16 02:23:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1241 transitions. [2022-10-16 02:23:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:23:16,474 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:23:16,474 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:23:16,516 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 02:23:16,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:23:16,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:23:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:23:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1178740195, now seen corresponding path program 3 times [2022-10-16 02:23:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:23:16,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74854923] [2022-10-16 02:23:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:23:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:23:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:23:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:23:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:23:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 114 proven. 350 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-16 02:23:20,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:23:20,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74854923] [2022-10-16 02:23:20,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74854923] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:23:20,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950360707] [2022-10-16 02:23:20,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 02:23:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:23:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:23:20,631 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 02:23:20,656 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 02:23:20,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-10-16 02:23:20,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:23:20,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 66 conjunts are in the unsatisfiable core [2022-10-16 02:23:20,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:23:20,871 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 02:23:21,906 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-16 02:23:21,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2022-10-16 02:23:22,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:22,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-10-16 02:23:22,065 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-16 02:23:22,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34 [2022-10-16 02:23:22,367 INFO L356 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-10-16 02:23:22,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 58 [2022-10-16 02:23:22,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:22,708 INFO L356 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-10-16 02:23:22,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 65 [2022-10-16 02:23:23,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:23,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-10-16 02:23:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 151 proven. 315 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 02:23:24,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:23:24,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950360707] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:23:24,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 02:23:24,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 34] total 58 [2022-10-16 02:23:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589693020] [2022-10-16 02:23:24,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 02:23:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 02:23:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:23:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 02:23:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3184, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 02:23:24,534 INFO L87 Difference]: Start difference. First operand 916 states and 1241 transitions. Second operand has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 57 states have internal predecessors, (177), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 02:23:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:23:34,780 INFO L93 Difference]: Finished difference Result 2088 states and 2995 transitions. [2022-10-16 02:23:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-10-16 02:23:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 57 states have internal predecessors, (177), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 115 [2022-10-16 02:23:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:23:34,796 INFO L225 Difference]: With dead ends: 2088 [2022-10-16 02:23:34,796 INFO L226 Difference]: Without dead ends: 1940 [2022-10-16 02:23:34,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8737 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1349, Invalid=21904, Unknown=3, NotChecked=0, Total=23256 [2022-10-16 02:23:34,805 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 180 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1455 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 02:23:34,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1229 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 810 Invalid, 0 Unknown, 1455 Unchecked, 0.8s Time] [2022-10-16 02:23:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2022-10-16 02:23:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1517. [2022-10-16 02:23:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1454 states have (on average 1.251031636863824) internal successors, (1819), 1480 states have internal predecessors, (1819), 22 states have call successors, (22), 13 states have call predecessors, (22), 39 states have return successors, (231), 23 states have call predecessors, (231), 22 states have call successors, (231) [2022-10-16 02:23:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2072 transitions. [2022-10-16 02:23:34,885 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2072 transitions. Word has length 115 [2022-10-16 02:23:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:23:34,886 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2072 transitions. [2022-10-16 02:23:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1052631578947367) internal successors, (177), 57 states have internal predecessors, (177), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 02:23:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2072 transitions. [2022-10-16 02:23:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:23:34,899 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:23:34,899 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:23:34,942 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 02:23:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 02:23:35,112 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:23:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:23:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1105177373, now seen corresponding path program 4 times [2022-10-16 02:23:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:23:35,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775692661] [2022-10-16 02:23:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:23:35,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:23:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:23:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:23:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:23:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:23:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 114 proven. 342 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-16 02:23:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:23:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775692661] [2022-10-16 02:23:38,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775692661] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:23:38,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205565576] [2022-10-16 02:23:38,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 02:23:38,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:23:38,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:23:38,624 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 02:23:38,636 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 02:23:38,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 02:23:38,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:23:38,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 58 conjunts are in the unsatisfiable core [2022-10-16 02:23:38,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:23:39,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:39,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-10-16 02:23:39,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 31 [2022-10-16 02:23:39,487 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 02:23:39,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 34 [2022-10-16 02:23:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:39,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2022-10-16 02:23:39,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 02:23:39,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-10-16 02:23:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 236 proven. 209 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 02:23:40,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 02:25:19,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2022-10-16 02:25:19,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2022-10-16 02:25:19,802 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 02:25:19,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 49 [2022-10-16 02:25:19,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2022-10-16 02:25:19,832 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 02:25:19,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-10-16 02:25:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 261 proven. 174 refuted. 3 times theorem prover too weak. 76 trivial. 0 not checked. [2022-10-16 02:25:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205565576] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 02:25:20,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 02:25:20,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 20] total 58 [2022-10-16 02:25:20,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84815352] [2022-10-16 02:25:20,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 02:25:20,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 02:25:20,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 02:25:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 02:25:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2963, Unknown=55, NotChecked=0, Total=3306 [2022-10-16 02:25:20,070 INFO L87 Difference]: Start difference. First operand 1517 states and 2072 transitions. Second operand has 58 states, 58 states have (on average 3.4482758620689653) internal successors, (200), 57 states have internal predecessors, (200), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-10-16 02:25:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 02:25:24,806 INFO L93 Difference]: Finished difference Result 2888 states and 4297 transitions. [2022-10-16 02:25:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 02:25:24,807 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.4482758620689653) internal successors, (200), 57 states have internal predecessors, (200), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 115 [2022-10-16 02:25:24,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 02:25:24,829 INFO L225 Difference]: With dead ends: 2888 [2022-10-16 02:25:24,829 INFO L226 Difference]: Without dead ends: 2666 [2022-10-16 02:25:24,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 224 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=683, Invalid=6917, Unknown=56, NotChecked=0, Total=7656 [2022-10-16 02:25:24,832 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 191 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 02:25:24,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 811 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 796 Invalid, 0 Unknown, 660 Unchecked, 0.7s Time] [2022-10-16 02:25:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-10-16 02:25:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2177. [2022-10-16 02:25:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2072 states have (on average 1.244208494208494) internal successors, (2578), 2124 states have internal predecessors, (2578), 34 states have call successors, (34), 17 states have call predecessors, (34), 69 states have return successors, (568), 35 states have call predecessors, (568), 34 states have call successors, (568) [2022-10-16 02:25:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3180 transitions. [2022-10-16 02:25:24,982 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3180 transitions. Word has length 115 [2022-10-16 02:25:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 02:25:24,982 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3180 transitions. [2022-10-16 02:25:24,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.4482758620689653) internal successors, (200), 57 states have internal predecessors, (200), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-10-16 02:25:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3180 transitions. [2022-10-16 02:25:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 02:25:25,007 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 02:25:25,007 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 02:25:25,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 02:25:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:25:25,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-16 02:25:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 02:25:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1387330589, now seen corresponding path program 5 times [2022-10-16 02:25:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 02:25:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448966265] [2022-10-16 02:25:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 02:25:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 02:25:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:25:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 02:25:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:25:27,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 02:25:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:25:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 02:25:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 02:25:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 119 proven. 311 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-16 02:25:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 02:25:27,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448966265] [2022-10-16 02:25:27,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448966265] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 02:25:27,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511800200] [2022-10-16 02:25:27,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 02:25:27,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 02:25:27,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 02:25:27,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 02:25:27,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 02:25:28,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-10-16 02:25:28,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 02:25:28,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 69 conjunts are in the unsatisfiable core [2022-10-16 02:25:28,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 02:25:28,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-10-16 02:25:28,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2022-10-16 02:25:54,204 INFO L356 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2022-10-16 02:25:54,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 41 [2022-10-16 02:25:54,378 INFO L356 Elim1Store]: treesize reduction 52, result has 11.9 percent of original size [2022-10-16 02:25:54,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 36 [2022-10-16 02:25:56,809 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 02:25:56,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33