/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-tiling/poly1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 16:28:07,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 16:28:07,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 16:28:08,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 16:28:08,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 16:28:08,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 16:28:08,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 16:28:08,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 16:28:08,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 16:28:08,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 16:28:08,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 16:28:08,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 16:28:08,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 16:28:08,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 16:28:08,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 16:28:08,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 16:28:08,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 16:28:08,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 16:28:08,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 16:28:08,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 16:28:08,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 16:28:08,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 16:28:08,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 16:28:08,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 16:28:08,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 16:28:08,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 16:28:08,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 16:28:08,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 16:28:08,128 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 16:28:08,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 16:28:08,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 16:28:08,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 16:28:08,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 16:28:08,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 16:28:08,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 16:28:08,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 16:28:08,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 16:28:08,163 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 16:28:08,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 16:28:08,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 16:28:08,164 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 16:28:08,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 16:28:08,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 16:28:08,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 16:28:08,165 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 16:28:08,165 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 16:28:08,165 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 16:28:08,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 16:28:08,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 16:28:08,166 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 16:28:08,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 16:28:08,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 16:28:08,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 16:28:08,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 16:28:08,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:28:08,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 16:28:08,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 16:28:08,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 16:28:08,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 16:28:08,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 16:28:08,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 16:28:08,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 16:28:08,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 16:28:08,601 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 16:28:08,602 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 16:28:08,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/poly1.c [2022-10-15 16:28:08,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209d5f2b/fbc00725a230409a92ab1953c95b5993/FLAG5dc0de7e0 [2022-10-15 16:28:09,406 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 16:28:09,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/poly1.c [2022-10-15 16:28:09,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209d5f2b/fbc00725a230409a92ab1953c95b5993/FLAG5dc0de7e0 [2022-10-15 16:28:09,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f209d5f2b/fbc00725a230409a92ab1953c95b5993 [2022-10-15 16:28:09,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 16:28:09,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 16:28:09,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 16:28:09,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 16:28:09,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 16:28:09,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:28:09" (1/1) ... [2022-10-15 16:28:09,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ff033c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:09, skipping insertion in model container [2022-10-15 16:28:09,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:28:09" (1/1) ... [2022-10-15 16:28:09,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 16:28:09,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 16:28:09,931 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-tiling/poly1.c[396,409] [2022-10-15 16:28:09,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:28:09,974 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 16:28:09,993 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-tiling/poly1.c[396,409] [2022-10-15 16:28:10,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 16:28:10,039 INFO L208 MainTranslator]: Completed translation [2022-10-15 16:28:10,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10 WrapperNode [2022-10-15 16:28:10,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 16:28:10,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 16:28:10,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 16:28:10,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 16:28:10,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,105 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-10-15 16:28:10,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 16:28:10,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 16:28:10,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 16:28:10,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 16:28:10,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 16:28:10,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 16:28:10,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 16:28:10,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 16:28:10,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (1/1) ... [2022-10-15 16:28:10,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 16:28:10,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:10,215 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 16:28:10,243 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 16:28:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 16:28:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 16:28:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 16:28:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 16:28:10,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 16:28:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 16:28:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 16:28:10,388 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 16:28:10,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 16:28:10,716 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 16:28:10,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 16:28:10,731 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 16:28:10,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:28:10 BoogieIcfgContainer [2022-10-15 16:28:10,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 16:28:10,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 16:28:10,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 16:28:10,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 16:28:10,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:28:09" (1/3) ... [2022-10-15 16:28:10,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609aa0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:28:10, skipping insertion in model container [2022-10-15 16:28:10,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:28:10" (2/3) ... [2022-10-15 16:28:10,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609aa0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:28:10, skipping insertion in model container [2022-10-15 16:28:10,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:28:10" (3/3) ... [2022-10-15 16:28:10,767 INFO L112 eAbstractionObserver]: Analyzing ICFG poly1.c [2022-10-15 16:28:10,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 16:28:10,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-15 16:28:10,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 16:28:10,924 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;@10d54698, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 16:28:10,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-15 16:28:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:28:10,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:10,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:28:10,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:10,953 INFO L85 PathProgramCache]: Analyzing trace with hash 28739442, now seen corresponding path program 1 times [2022-10-15 16:28:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:10,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374638036] [2022-10-15 16:28:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:11,218 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 16:28:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:11,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374638036] [2022-10-15 16:28:11,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374638036] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:28:11,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:28:11,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:28:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065852969] [2022-10-15 16:28:11,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:28:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:28:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:28:11,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:28:11,273 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:11,319 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-10-15 16:28:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:28:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:28:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:11,333 INFO L225 Difference]: With dead ends: 26 [2022-10-15 16:28:11,333 INFO L226 Difference]: Without dead ends: 22 [2022-10-15 16:28:11,335 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 16:28:11,340 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:11,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:28:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-15 16:28:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-15 16:28:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-10-15 16:28:11,383 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 5 [2022-10-15 16:28:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:11,383 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-10-15 16:28:11,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-10-15 16:28:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:28:11,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:11,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:28:11,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 16:28:11,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:11,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 28693957, now seen corresponding path program 1 times [2022-10-15 16:28:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:11,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207461555] [2022-10-15 16:28:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:11,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:11,906 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 16:28:11,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:11,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207461555] [2022-10-15 16:28:11,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207461555] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:28:11,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:28:11,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:28:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851132764] [2022-10-15 16:28:11,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:28:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:28:11,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:28:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:28:11,914 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:12,004 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-10-15 16:28:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:28:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:28:12,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:12,007 INFO L225 Difference]: With dead ends: 39 [2022-10-15 16:28:12,007 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 16:28:12,008 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 16:28:12,010 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:28:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 16:28:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2022-10-15 16:28:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-10-15 16:28:12,018 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 5 [2022-10-15 16:28:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:12,019 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-10-15 16:28:12,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-10-15 16:28:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 16:28:12,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:12,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 16:28:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 16:28:12,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash 28693956, now seen corresponding path program 1 times [2022-10-15 16:28:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:12,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44904866] [2022-10-15 16:28:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:12,110 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 16:28:12,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44904866] [2022-10-15 16:28:12,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44904866] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:28:12,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:28:12,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 16:28:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384725136] [2022-10-15 16:28:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:28:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:28:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:28:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:28:12,117 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:12,148 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-10-15 16:28:12,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:28:12,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-15 16:28:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:12,150 INFO L225 Difference]: With dead ends: 25 [2022-10-15 16:28:12,150 INFO L226 Difference]: Without dead ends: 25 [2022-10-15 16:28:12,152 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 16:28:12,155 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:12,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:28:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-15 16:28:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-15 16:28:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 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 16:28:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-10-15 16:28:12,170 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2022-10-15 16:28:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:12,170 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-10-15 16:28:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 16:28:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-10-15 16:28:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:28:12,171 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:12,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:12,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 16:28:12,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:12,173 INFO L85 PathProgramCache]: Analyzing trace with hash 121541393, now seen corresponding path program 1 times [2022-10-15 16:28:12,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:12,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969924216] [2022-10-15 16:28:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:12,222 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 16:28:12,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969924216] [2022-10-15 16:28:12,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969924216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:28:12,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:28:12,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 16:28:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096053347] [2022-10-15 16:28:12,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:28:12,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 16:28:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 16:28:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 16:28:12,226 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 16:28:12,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:12,259 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-10-15 16:28:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 16:28:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:28:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:12,265 INFO L225 Difference]: With dead ends: 23 [2022-10-15 16:28:12,265 INFO L226 Difference]: Without dead ends: 23 [2022-10-15 16:28:12,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:28:12,268 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:12,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:28:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-15 16:28:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-10-15 16:28:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-10-15 16:28:12,273 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2022-10-15 16:28:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:12,274 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-10-15 16:28:12,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 16:28:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-10-15 16:28:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 16:28:12,275 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:12,275 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:12,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 16:28:12,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:12,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 123139218, now seen corresponding path program 1 times [2022-10-15 16:28:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:12,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10819001] [2022-10-15 16:28:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:12,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:12,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:12,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3171962] [2022-10-15 16:28:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:12,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:12,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:12,304 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 16:28:12,323 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 16:28:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 16:28:12,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:12,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:28:12,625 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 16:28:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:13,047 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 16:28:13,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:13,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10819001] [2022-10-15 16:28:13,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:13,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3171962] [2022-10-15 16:28:13,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3171962] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:13,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:13,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-15 16:28:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285349250] [2022-10-15 16:28:13,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:13,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:28:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:28:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:28:13,056 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 16:28:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:13,181 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-10-15 16:28:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:28:13,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 16:28:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:13,184 INFO L225 Difference]: With dead ends: 49 [2022-10-15 16:28:13,184 INFO L226 Difference]: Without dead ends: 49 [2022-10-15 16:28:13,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:28:13,186 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:13,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 38 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:28:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-15 16:28:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-10-15 16:28:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-10-15 16:28:13,198 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 8 [2022-10-15 16:28:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:13,199 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-10-15 16:28:13,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 16:28:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-10-15 16:28:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 16:28:13,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:13,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:13,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 16:28:13,421 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 16:28:13,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 536732964, now seen corresponding path program 1 times [2022-10-15 16:28:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:13,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436844850] [2022-10-15 16:28:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:13,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:13,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644824861] [2022-10-15 16:28:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:13,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:13,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:13,440 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 16:28:13,452 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 16:28:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:13,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:28:13,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:13,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:13,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436844850] [2022-10-15 16:28:13,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:13,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644824861] [2022-10-15 16:28:13,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644824861] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:13,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:13,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-10-15 16:28:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713854434] [2022-10-15 16:28:13,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 16:28:13,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 16:28:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:28:13,565 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:13,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:13,618 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-10-15 16:28:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:28:13,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 16:28:13,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:13,620 INFO L225 Difference]: With dead ends: 26 [2022-10-15 16:28:13,620 INFO L226 Difference]: Without dead ends: 26 [2022-10-15 16:28:13,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-15 16:28:13,622 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:13,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:28:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-15 16:28:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-10-15 16:28:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:13,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-10-15 16:28:13,627 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 11 [2022-10-15 16:28:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:13,627 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-10-15 16:28:13,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-10-15 16:28:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 16:28:13,629 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:13,629 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-10-15 16:28:13,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:13,842 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,SelfDestructingSolverStorable5 [2022-10-15 16:28:13,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 538330789, now seen corresponding path program 2 times [2022-10-15 16:28:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:13,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714919800] [2022-10-15 16:28:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:13,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:13,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146697920] [2022-10-15 16:28:13,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:28:13,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:13,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:13,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 16:28:13,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:28:13,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:28:13,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-15 16:28:13,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:13,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-15 16:28:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:14,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:14,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714919800] [2022-10-15 16:28:14,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:14,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146697920] [2022-10-15 16:28:14,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146697920] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:14,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:14,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-15 16:28:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802904107] [2022-10-15 16:28:14,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 16:28:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 16:28:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-15 16:28:14,595 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 16:28:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:16,372 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2022-10-15 16:28:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-15 16:28:16,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2022-10-15 16:28:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:16,376 INFO L225 Difference]: With dead ends: 89 [2022-10-15 16:28:16,376 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 16:28:16,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:28:16,378 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 145 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:16,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 88 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 16:28:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 16:28:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2022-10-15 16:28:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.303030303030303) internal successors, (86), 69 states have internal predecessors, (86), 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 16:28:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2022-10-15 16:28:16,387 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 11 [2022-10-15 16:28:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:16,388 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2022-10-15 16:28:16,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 16:28:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2022-10-15 16:28:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-15 16:28:16,389 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:16,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:16,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:16,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:16,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash 3012145, now seen corresponding path program 2 times [2022-10-15 16:28:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:16,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589638122] [2022-10-15 16:28:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:16,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:16,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:16,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496534839] [2022-10-15 16:28:16,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:28:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:16,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 16:28:16,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 16:28:16,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:28:16,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 16:28:16,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:28:16,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 16:28:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:16,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589638122] [2022-10-15 16:28:16,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:16,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496534839] [2022-10-15 16:28:16,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496534839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 16:28:16,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 16:28:16,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 16:28:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474331185] [2022-10-15 16:28:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 16:28:16,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 16:28:16,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 16:28:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:28:16,682 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 16:28:16,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:16,717 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-10-15 16:28:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 16:28:16,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-15 16:28:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:16,719 INFO L225 Difference]: With dead ends: 79 [2022-10-15 16:28:16,719 INFO L226 Difference]: Without dead ends: 79 [2022-10-15 16:28:16,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 16:28:16,720 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:16,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 16:28:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-15 16:28:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-10-15 16:28:16,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 70 states have internal predecessors, (86), 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 16:28:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2022-10-15 16:28:16,729 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 14 [2022-10-15 16:28:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:16,729 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2022-10-15 16:28:16,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 16:28:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2022-10-15 16:28:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 16:28:16,731 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:16,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:16,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:16,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1399123306, now seen corresponding path program 1 times [2022-10-15 16:28:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:16,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892177760] [2022-10-15 16:28:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:16,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:16,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:16,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672115381] [2022-10-15 16:28:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:16,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:16,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:16,962 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:16,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 16:28:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:17,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 16:28:17,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:17,080 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 0 case distinctions, treesize of input 54 treesize of output 49 [2022-10-15 16:28:17,087 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 16 treesize of output 15 [2022-10-15 16:28:17,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-15 16:28:17,198 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 21 treesize of output 20 [2022-10-15 16:28:17,278 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:17,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 57 treesize of output 26 [2022-10-15 16:28:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:17,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:17,663 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 49 treesize of output 45 [2022-10-15 16:28:17,679 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:17,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2022-10-15 16:28:17,748 INFO L356 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2022-10-15 16:28:17,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 79 [2022-10-15 16:28:17,835 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:17,836 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 112 treesize of output 110 [2022-10-15 16:28:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892177760] [2022-10-15 16:28:17,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:17,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672115381] [2022-10-15 16:28:17,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672115381] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:17,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:17,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2022-10-15 16:28:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059429781] [2022-10-15 16:28:17,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 16:28:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 16:28:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:28:17,956 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:28:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:18,134 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2022-10-15 16:28:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 16:28:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16 [2022-10-15 16:28:18,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:18,136 INFO L225 Difference]: With dead ends: 81 [2022-10-15 16:28:18,136 INFO L226 Difference]: Without dead ends: 81 [2022-10-15 16:28:18,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-10-15 16:28:18,137 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:18,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-10-15 16:28:18,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-15 16:28:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-10-15 16:28:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 70 states have internal predecessors, (85), 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 16:28:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-10-15 16:28:18,153 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 16 [2022-10-15 16:28:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:18,154 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-10-15 16:28:18,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 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 16:28:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-10-15 16:28:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 16:28:18,158 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:18,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:18,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:18,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash 135161021, now seen corresponding path program 1 times [2022-10-15 16:28:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:18,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20145644] [2022-10-15 16:28:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:18,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:18,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408320378] [2022-10-15 16:28:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:18,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:18,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:18,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 16:28:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:18,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 16:28:18,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 16:28:18,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:18,662 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 53 treesize of output 47 [2022-10-15 16:28:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 16:28:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:18,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20145644] [2022-10-15 16:28:18,737 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:18,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408320378] [2022-10-15 16:28:18,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408320378] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:18,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:18,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-15 16:28:18,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980527424] [2022-10-15 16:28:18,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 16:28:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 16:28:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:28:18,740 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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 16:28:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:18,836 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2022-10-15 16:28:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 16:28:18,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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 16 [2022-10-15 16:28:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:18,837 INFO L225 Difference]: With dead ends: 78 [2022-10-15 16:28:18,838 INFO L226 Difference]: Without dead ends: 78 [2022-10-15 16:28:18,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-15 16:28:18,839 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:18,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 22 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:28:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-15 16:28:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-10-15 16:28:18,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 70 states have internal predecessors, (85), 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 16:28:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-10-15 16:28:18,846 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 16 [2022-10-15 16:28:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:18,846 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-10-15 16:28:18,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 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 16:28:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-10-15 16:28:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 16:28:18,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:18,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:18,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:19,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:19,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2097372759, now seen corresponding path program 2 times [2022-10-15 16:28:19,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:19,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366427636] [2022-10-15 16:28:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:19,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:19,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035555978] [2022-10-15 16:28:19,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 16:28:19,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:19,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:19,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:19,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 16:28:19,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 16:28:19,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:28:19,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-15 16:28:19,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:19,250 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 0 case distinctions, treesize of input 54 treesize of output 49 [2022-10-15 16:28:19,254 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-15 16:28:19,259 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 16 treesize of output 15 [2022-10-15 16:28:19,322 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 0 case distinctions, treesize of input 57 treesize of output 50 [2022-10-15 16:28:19,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:28:19,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-10-15 16:28:19,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 16:28:19,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-10-15 16:28:19,429 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 21 treesize of output 20 [2022-10-15 16:28:19,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-15 16:28:19,514 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:19,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 27 [2022-10-15 16:28:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:19,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:20,261 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 49 treesize of output 45 [2022-10-15 16:28:20,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:20,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2022-10-15 16:28:20,395 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:20,396 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 575 treesize of output 571 [2022-10-15 16:28:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:20,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366427636] [2022-10-15 16:28:20,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:20,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035555978] [2022-10-15 16:28:20,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035555978] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:20,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:20,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-10-15 16:28:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42680703] [2022-10-15 16:28:20,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-15 16:28:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-15 16:28:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-10-15 16:28:20,940 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:22,201 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2022-10-15 16:28:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 16:28:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-15 16:28:22,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:22,203 INFO L225 Difference]: With dead ends: 123 [2022-10-15 16:28:22,203 INFO L226 Difference]: Without dead ends: 123 [2022-10-15 16:28:22,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2022-10-15 16:28:22,204 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 113 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:22,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 139 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2022-10-15 16:28:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-10-15 16:28:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 76. [2022-10-15 16:28:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.25) internal successors, (90), 75 states have internal predecessors, (90), 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 16:28:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2022-10-15 16:28:22,212 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 19 [2022-10-15 16:28:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:22,212 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2022-10-15 16:28:22,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 16:28:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2022-10-15 16:28:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 16:28:22,214 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:22,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:22,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:22,428 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -169352954, now seen corresponding path program 1 times [2022-10-15 16:28:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:22,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364919924] [2022-10-15 16:28:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:22,440 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:22,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650223400] [2022-10-15 16:28:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:22,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:22,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:22,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:22,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 16:28:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:22,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 16:28:22,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:28:22,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 16:28:22,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364919924] [2022-10-15 16:28:22,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650223400] [2022-10-15 16:28:22,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650223400] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:22,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:22,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-15 16:28:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176867373] [2022-10-15 16:28:22,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:22,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 16:28:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 16:28:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 16:28:22,601 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 16:28:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:22,667 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2022-10-15 16:28:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:28:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-15 16:28:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:22,669 INFO L225 Difference]: With dead ends: 92 [2022-10-15 16:28:22,669 INFO L226 Difference]: Without dead ends: 92 [2022-10-15 16:28:22,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-10-15 16:28:22,670 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:22,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 28 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:28:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-15 16:28:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2022-10-15 16:28:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 81 states have internal predecessors, (96), 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 16:28:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2022-10-15 16:28:22,678 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 20 [2022-10-15 16:28:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:22,680 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2022-10-15 16:28:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 16:28:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2022-10-15 16:28:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 16:28:22,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:22,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:22,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:22,884 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,SelfDestructingSolverStorable11 [2022-10-15 16:28:22,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash 461741099, now seen corresponding path program 1 times [2022-10-15 16:28:22,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:22,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810201555] [2022-10-15 16:28:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:22,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:22,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920664975] [2022-10-15 16:28:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:22,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:22,924 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:22,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 16:28:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:22,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-15 16:28:22,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:23,032 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 0 case distinctions, treesize of input 54 treesize of output 49 [2022-10-15 16:28:23,035 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-15 16:28:23,040 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 16 treesize of output 15 [2022-10-15 16:28:23,214 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:23,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 57 treesize of output 26 [2022-10-15 16:28:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:23,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:23,700 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 49 treesize of output 45 [2022-10-15 16:28:23,717 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-15 16:28:23,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2022-10-15 16:28:23,780 INFO L356 Elim1Store]: treesize reduction 24, result has 55.6 percent of original size [2022-10-15 16:28:23,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 60 [2022-10-15 16:28:23,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 33 [2022-10-15 16:28:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810201555] [2022-10-15 16:28:24,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920664975] [2022-10-15 16:28:24,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920664975] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:24,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:24,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-10-15 16:28:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427462000] [2022-10-15 16:28:24,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-15 16:28:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-15 16:28:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-10-15 16:28:24,092 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 16:28:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:30,580 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2022-10-15 16:28:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-15 16:28:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 22 [2022-10-15 16:28:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:30,582 INFO L225 Difference]: With dead ends: 140 [2022-10-15 16:28:30,583 INFO L226 Difference]: Without dead ends: 140 [2022-10-15 16:28:30,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=608, Invalid=1942, Unknown=0, NotChecked=0, Total=2550 [2022-10-15 16:28:30,585 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 247 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:30,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 176 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 16:28:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-10-15 16:28:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 93. [2022-10-15 16:28:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 92 states have internal predecessors, (105), 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 16:28:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2022-10-15 16:28:30,591 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 22 [2022-10-15 16:28:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:30,592 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2022-10-15 16:28:30,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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 16:28:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2022-10-15 16:28:30,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-15 16:28:30,593 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:30,593 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 16:28:30,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:30,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 16:28:30,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash 357170568, now seen corresponding path program 1 times [2022-10-15 16:28:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795251335] [2022-10-15 16:28:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:30,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:30,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547418454] [2022-10-15 16:28:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:30,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:30,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:30,821 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:30,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 16:28:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 16:28:30,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-15 16:28:30,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:28:30,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:31,308 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 55 treesize of output 49 [2022-10-15 16:28:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 16:28:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:31,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795251335] [2022-10-15 16:28:31,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:31,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547418454] [2022-10-15 16:28:31,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547418454] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:31,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:31,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-10-15 16:28:31,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404918750] [2022-10-15 16:28:31,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:31,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 16:28:31,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 16:28:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-15 16:28:31,501 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 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 16:28:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 16:28:31,798 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-10-15 16:28:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 16:28:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 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 22 [2022-10-15 16:28:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 16:28:31,800 INFO L225 Difference]: With dead ends: 102 [2022-10-15 16:28:31,800 INFO L226 Difference]: Without dead ends: 102 [2022-10-15 16:28:31,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-10-15 16:28:31,802 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 108 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 16:28:31,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 16:28:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-15 16:28:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2022-10-15 16:28:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 92 states have internal predecessors, (104), 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 16:28:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2022-10-15 16:28:31,808 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 22 [2022-10-15 16:28:31,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 16:28:31,808 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2022-10-15 16:28:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 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 16:28:31,809 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2022-10-15 16:28:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 16:28:31,810 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 16:28:31,810 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-10-15 16:28:31,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 16:28:32,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 16:28:32,024 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-10-15 16:28:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 16:28:32,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1917538203, now seen corresponding path program 3 times [2022-10-15 16:28:32,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 16:28:32,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736813479] [2022-10-15 16:28:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 16:28:32,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 16:28:32,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 16:28:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54267629] [2022-10-15 16:28:32,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 16:28:32,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 16:28:32,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 16:28:32,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 16:28:32,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 16:28:32,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-10-15 16:28:32,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 16:28:32,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-15 16:28:32,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 16:28:32,330 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 8 treesize of output 7 [2022-10-15 16:28:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:32,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 16:28:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 16:28:38,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 16:28:38,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736813479] [2022-10-15 16:28:38,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 16:28:38,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54267629] [2022-10-15 16:28:38,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54267629] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 16:28:38,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-15 16:28:38,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-10-15 16:28:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448212492] [2022-10-15 16:28:38,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-15 16:28:38,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-15 16:28:38,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 16:28:38,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-15 16:28:38,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-10-15 16:28:38,419 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 23 states have internal predecessors, (46), 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 16:28:49,438 WARN L233 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 197 DAG size of output: 143 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-15 16:29:04,110 WARN L233 SmtUtils]: Spent 14.41s on a formula simplification. DAG size of input: 193 DAG size of output: 139 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-15 16:29:10,263 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 167 DAG size of output: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)