/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:10:47,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:10:47,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:10:47,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 18:10:47,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 18:10:47,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 18:10:47,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 18:10:47,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 18:10:47,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 18:10:47,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 18:10:48,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 18:10:48,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 18:10:48,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 18:10:48,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 18:10:48,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 18:10:48,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 18:10:48,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 18:10:48,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 18:10:48,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 18:10:48,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 18:10:48,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 18:10:48,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 18:10:48,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 18:10:48,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 18:10:48,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 18:10:48,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:10:48,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:10:48,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:10:48,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 18:10:48,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:10:48,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:10:48,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:10:48,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:10:48,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:10:48,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:10:48,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:10:48,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:10:48,144 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:10:48,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:10:48,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:10:48,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:10:48,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:10:48,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:10:48,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:10:48,147 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:10:48,147 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:10:48,147 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:10:48,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:10:48,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:10:48,148 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:10:48,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:10:48,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:10:48,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:10:48,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:10:48,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:10:48,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:10:48,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:10:48,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:10:48,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:10:48,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:10:48,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:10:48,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:10:48,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:10:48,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:10:48,648 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:10:48,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2022-10-15 18:10:48,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd38bf8cc/aa507eca871b487ab6ef8b4c2bb2ef5f/FLAG04321ff4c [2022-10-15 18:10:49,442 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:10:49,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i [2022-10-15 18:10:49,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd38bf8cc/aa507eca871b487ab6ef8b4c2bb2ef5f/FLAG04321ff4c [2022-10-15 18:10:49,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd38bf8cc/aa507eca871b487ab6ef8b4c2bb2ef5f [2022-10-15 18:10:49,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:10:49,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:10:49,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:10:49,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:10:49,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:10:49,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:10:49" (1/1) ... [2022-10-15 18:10:49,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5225d17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:49, skipping insertion in model container [2022-10-15 18:10:49,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:10:49" (1/1) ... [2022-10-15 18:10:49,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:10:49,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:10:50,039 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2022-10-15 18:10:50,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:10:50,077 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:10:50,092 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy9_ground-1.i[816,829] [2022-10-15 18:10:50,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:10:50,131 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:10:50,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50 WrapperNode [2022-10-15 18:10:50,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:10:50,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:10:50,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:10:50,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:10:50,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,195 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 195 [2022-10-15 18:10:50,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:10:50,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:10:50,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:10:50,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:10:50,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:10:50,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:10:50,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:10:50,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:10:50,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (1/1) ... [2022-10-15 18:10:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:10:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:10:50,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 18:10:50,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 18:10:50,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:10:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:10:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:10:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:10:50,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:10:50,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:10:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:10:50,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:10:50,422 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:10:50,425 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:10:51,161 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:10:51,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:10:51,171 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-15 18:10:51,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:10:51 BoogieIcfgContainer [2022-10-15 18:10:51,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:10:51,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:10:51,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:10:51,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:10:51,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:10:49" (1/3) ... [2022-10-15 18:10:51,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9ff8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:10:51, skipping insertion in model container [2022-10-15 18:10:51,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:10:50" (2/3) ... [2022-10-15 18:10:51,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9ff8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:10:51, skipping insertion in model container [2022-10-15 18:10:51,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:10:51" (3/3) ... [2022-10-15 18:10:51,185 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.i [2022-10-15 18:10:51,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:10:51,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-10-15 18:10:51,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:10:51,273 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;@358f9b32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:10:51,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-10-15 18:10:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 120 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:10:51,286 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:51,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:10:51,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:10:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:10:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 18:10:51,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:10:51,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761840512] [2022-10-15 18:10:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:10:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:10:54,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761840512] [2022-10-15 18:10:54,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761840512] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:10:54,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:10:54,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:10:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003785280] [2022-10-15 18:10:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:10:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:10:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:10:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:10:54,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:54,628 INFO L87 Difference]: Start difference. First operand has 121 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 120 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:10:54,820 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2022-10-15 18:10:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:10:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 18:10:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:10:54,834 INFO L225 Difference]: With dead ends: 118 [2022-10-15 18:10:54,835 INFO L226 Difference]: Without dead ends: 116 [2022-10-15 18:10:54,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:54,842 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 121 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:10:54,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 84 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:10:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-15 18:10:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-10-15 18:10:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 73 states have (on average 1.726027397260274) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-10-15 18:10:54,889 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 4 [2022-10-15 18:10:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:10:54,889 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-10-15 18:10:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-10-15 18:10:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:10:54,890 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:54,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:10:54,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:10:54,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:10:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:10:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 18:10:54,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:10:54,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744806025] [2022-10-15 18:10:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:54,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:10:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:10:55,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744806025] [2022-10-15 18:10:55,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744806025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:10:55,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:10:55,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:10:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184482540] [2022-10-15 18:10:55,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:10:55,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:10:55,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:10:55,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:10:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:55,847 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:10:55,960 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2022-10-15 18:10:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:10:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 18:10:55,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:10:55,963 INFO L225 Difference]: With dead ends: 124 [2022-10-15 18:10:55,963 INFO L226 Difference]: Without dead ends: 124 [2022-10-15 18:10:55,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:55,965 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:10:55,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 197 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:10:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-15 18:10:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2022-10-15 18:10:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 75 states have (on average 1.7066666666666668) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2022-10-15 18:10:55,979 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 4 [2022-10-15 18:10:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:10:55,980 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2022-10-15 18:10:55,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2022-10-15 18:10:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:10:55,981 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:55,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:10:55,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:10:55,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:10:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:10:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 889659654, now seen corresponding path program 1 times [2022-10-15 18:10:55,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:10:55,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264255491] [2022-10-15 18:10:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:10:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:10:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264255491] [2022-10-15 18:10:56,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264255491] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:10:56,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:10:56,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:10:56,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105259289] [2022-10-15 18:10:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:10:56,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:10:56,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:10:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:10:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:56,265 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:10:56,347 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-10-15 18:10:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:10:56,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 18:10:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:10:56,349 INFO L225 Difference]: With dead ends: 116 [2022-10-15 18:10:56,350 INFO L226 Difference]: Without dead ends: 116 [2022-10-15 18:10:56,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:56,352 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:10:56,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 82 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:10:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-15 18:10:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-10-15 18:10:56,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 75 states have (on average 1.68) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2022-10-15 18:10:56,363 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 6 [2022-10-15 18:10:56,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:10:56,363 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2022-10-15 18:10:56,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2022-10-15 18:10:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:10:56,364 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:56,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:10:56,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:10:56,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:10:56,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:10:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash 889659655, now seen corresponding path program 1 times [2022-10-15 18:10:56,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:10:56,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606841661] [2022-10-15 18:10:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:56,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:10:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:10:56,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606841661] [2022-10-15 18:10:56,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606841661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:10:56,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:10:56,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:10:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980642907] [2022-10-15 18:10:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:10:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:10:56,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:10:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:10:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:56,512 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:10:56,604 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2022-10-15 18:10:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:10:56,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 18:10:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:10:56,606 INFO L225 Difference]: With dead ends: 120 [2022-10-15 18:10:56,606 INFO L226 Difference]: Without dead ends: 120 [2022-10-15 18:10:56,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:10:56,608 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:10:56,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 194 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:10:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-15 18:10:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2022-10-15 18:10:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 117 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2022-10-15 18:10:56,617 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 6 [2022-10-15 18:10:56,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:10:56,618 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2022-10-15 18:10:56,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2022-10-15 18:10:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 18:10:56,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:56,619 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:10:56,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:10:56,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:10:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:10:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash 719163786, now seen corresponding path program 1 times [2022-10-15 18:10:56,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:10:56,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387397900] [2022-10-15 18:10:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:56,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:10:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:57,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:10:57,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387397900] [2022-10-15 18:10:57,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387397900] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:10:57,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971791006] [2022-10-15 18:10:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:10:57,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:10:57,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:10:57,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:10:57,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 18:10:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:10:57,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 99 conjunts are in the unsatisfiable core [2022-10-15 18:10:57,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:10:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:10:58,320 INFO L244 Elim1Store]: Index analysis took 237 ms [2022-10-15 18:10:58,703 INFO L356 Elim1Store]: treesize reduction 60, result has 47.8 percent of original size [2022-10-15 18:10:58,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 39 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 75 [2022-10-15 18:10:58,786 INFO L356 Elim1Store]: treesize reduction 224, result has 0.4 percent of original size [2022-10-15 18:10:58,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 197 treesize of output 181 [2022-10-15 18:10:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:59,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:10:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:10:59,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971791006] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:10:59,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:10:59,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 18:10:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720619427] [2022-10-15 18:10:59,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:10:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:10:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:10:59,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:10:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:10:59,326 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:10:59,782 INFO L93 Difference]: Finished difference Result 340 states and 372 transitions. [2022-10-15 18:10:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:10:59,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 18:10:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:10:59,784 INFO L225 Difference]: With dead ends: 340 [2022-10-15 18:10:59,784 INFO L226 Difference]: Without dead ends: 340 [2022-10-15 18:10:59,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:10:59,786 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 357 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:10:59,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 518 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:10:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-10-15 18:10:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 134. [2022-10-15 18:10:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.5913978494623655) internal successors, (148), 133 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 148 transitions. [2022-10-15 18:10:59,798 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 148 transitions. Word has length 10 [2022-10-15 18:10:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:10:59,798 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 148 transitions. [2022-10-15 18:10:59,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:10:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 148 transitions. [2022-10-15 18:10:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:10:59,799 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:10:59,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:10:59,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 18:11:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:11:00,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-10-15 18:11:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:11:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash -373337781, now seen corresponding path program 1 times [2022-10-15 18:11:00,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:11:00,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310717255] [2022-10-15 18:11:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:11:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:11:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:11:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:11:00,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:11:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310717255] [2022-10-15 18:11:00,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310717255] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:11:00,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001057007] [2022-10-15 18:11:00,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:11:00,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:11:00,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:11:00,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 18:11:00,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 18:11:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:11:00,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 18:11:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:11:00,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:11:01,097 INFO L356 Elim1Store]: treesize reduction 800, result has 18.5 percent of original size [2022-10-15 18:11:01,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 8 case distinctions, treesize of input 33 treesize of output 191 [2022-10-15 18:11:01,458 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 109084662 treesize of output 109051894