/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-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:12:01,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:12:01,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:12:01,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 11:12:01,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:12:01,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:12:01,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:12:01,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:12:01,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:12:01,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:12:01,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:12:01,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:12:01,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:12:01,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:12:01,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:12:01,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:12:01,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 11:12:01,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:12:01,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:12:01,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:12:01,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:12:01,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:12:01,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:12:01,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:12:01,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:12:01,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:12:01,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:12:01,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:12:01,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:12:01,423 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:12:01,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:12:01,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:12:01,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:12:01,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:12:01,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:12:01,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:12:01,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:12:01,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:12:01,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:12:01,426 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:12:01,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:12:01,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:12:01,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:12:01,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:12:01,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:12:01,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:12:01,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:12:01,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:12:01,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:12:01,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:12:01,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:12:01,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:12:01,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:12:01,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:12:01,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:12:01,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:12:01,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:12:01,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:12:01,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:12:01,877 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:12:01,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2022-10-16 11:12:01,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f982937c/1569526d92db418f9b86342fd70b62a0/FLAG8c919bba3 [2022-10-16 11:12:02,754 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:12:02,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i [2022-10-16 11:12:02,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f982937c/1569526d92db418f9b86342fd70b62a0/FLAG8c919bba3 [2022-10-16 11:12:03,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f982937c/1569526d92db418f9b86342fd70b62a0 [2022-10-16 11:12:03,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:12:03,037 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:12:03,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:12:03,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:12:03,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:12:03,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d8517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03, skipping insertion in model container [2022-10-16 11:12:03,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:12:03,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:12:03,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:12:03,542 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:12:03,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:12:03,675 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:12:03,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03 WrapperNode [2022-10-16 11:12:03,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:12:03,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:12:03,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:12:03,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:12:03,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,760 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-10-16 11:12:03,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:12:03,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:12:03,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:12:03,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:12:03,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:12:03,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:12:03,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:12:03,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:12:03,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (1/1) ... [2022-10-16 11:12:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:12:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:03,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 11:12:03,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 11:12:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:12:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:12:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:12:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:12:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec [2022-10-16 11:12:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec [2022-10-16 11:12:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:12:03,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:12:04,058 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:12:04,061 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:12:04,297 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:12:04,305 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:12:04,306 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 11:12:04,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:12:04 BoogieIcfgContainer [2022-10-16 11:12:04,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:12:04,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:12:04,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:12:04,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:12:04,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:12:03" (1/3) ... [2022-10-16 11:12:04,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fedd2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:12:04, skipping insertion in model container [2022-10-16 11:12:04,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:12:03" (2/3) ... [2022-10-16 11:12:04,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fedd2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:12:04, skipping insertion in model container [2022-10-16 11:12:04,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:12:04" (3/3) ... [2022-10-16 11:12:04,324 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_strlen-alloca-1.i [2022-10-16 11:12:04,354 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:12:04,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-16 11:12:04,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:12:04,491 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7e51524f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:12:04,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-16 11:12:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:12:04,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 11:12:04,512 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:04,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 11:12:04,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash 28693830, now seen corresponding path program 1 times [2022-10-16 11:12:04,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:04,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104590019] [2022-10-16 11:12:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104590019] [2022-10-16 11:12:04,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104590019] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:04,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:04,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:12:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155950862] [2022-10-16 11:12:04,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:04,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:12:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:12:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:04,828 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-10-16 11:12:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:04,907 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-10-16 11:12:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:12:04,914 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 [2022-10-16 11:12:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:04,931 INFO L225 Difference]: With dead ends: 69 [2022-10-16 11:12:04,932 INFO L226 Difference]: Without dead ends: 41 [2022-10-16 11:12:04,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:04,946 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:04,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-16 11:12:04,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-10-16 11:12:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 34 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-10-16 11:12:04,997 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2022-10-16 11:12:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:04,998 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-10-16 11:12:04,998 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) [2022-10-16 11:12:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-10-16 11:12:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 11:12:04,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:04,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 11:12:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:12:05,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 28695752, now seen corresponding path program 1 times [2022-10-16 11:12:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:05,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777178061] [2022-10-16 11:12:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:05,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777178061] [2022-10-16 11:12:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777178061] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:05,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:12:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789358697] [2022-10-16 11:12:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:12:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:12:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:05,111 INFO L87 Difference]: Start difference. First operand 37 states and 44 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) [2022-10-16 11:12:05,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:05,136 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-10-16 11:12:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:12:05,137 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 [2022-10-16 11:12:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:05,138 INFO L225 Difference]: With dead ends: 37 [2022-10-16 11:12:05,138 INFO L226 Difference]: Without dead ends: 35 [2022-10-16 11:12:05,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:05,141 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:05,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-16 11:12:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2022-10-16 11:12:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-10-16 11:12:05,149 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 5 [2022-10-16 11:12:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:05,149 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-10-16 11:12:05,150 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) [2022-10-16 11:12:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-10-16 11:12:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 11:12:05,151 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:05,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 11:12:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:12:05,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2022-10-16 11:12:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559534191] [2022-10-16 11:12:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559534191] [2022-10-16 11:12:05,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559534191] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:05,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:05,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:12:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927046185] [2022-10-16 11:12:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:12:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:12:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:05,211 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:05,231 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-10-16 11:12:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:12:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 11:12:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:05,233 INFO L225 Difference]: With dead ends: 27 [2022-10-16 11:12:05,233 INFO L226 Difference]: Without dead ends: 25 [2022-10-16 11:12:05,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:05,236 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:05,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 34 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:05,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-16 11:12:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-16 11:12:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-10-16 11:12:05,244 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 6 [2022-10-16 11:12:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:05,244 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-10-16 11:12:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-10-16 11:12:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:12:05,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:05,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:05,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 11:12:05,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash -592219795, now seen corresponding path program 1 times [2022-10-16 11:12:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:05,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073429744] [2022-10-16 11:12:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:05,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073429744] [2022-10-16 11:12:05,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073429744] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:05,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:05,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:12:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728371032] [2022-10-16 11:12:05,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:05,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:12:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:05,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:12:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:12:05,383 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:05,425 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-10-16 11:12:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:12:05,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-10-16 11:12:05,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:05,427 INFO L225 Difference]: With dead ends: 53 [2022-10-16 11:12:05,427 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 11:12:05,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:12:05,431 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:05,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 11:12:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-10-16 11:12:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-10-16 11:12:05,440 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 9 [2022-10-16 11:12:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:05,440 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-10-16 11:12:05,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-10-16 11:12:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:12:05,442 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:05,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:05,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 11:12:05,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1182787567, now seen corresponding path program 1 times [2022-10-16 11:12:05,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:05,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480101666] [2022-10-16 11:12:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480101666] [2022-10-16 11:12:05,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480101666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:05,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:05,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:12:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852209186] [2022-10-16 11:12:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:05,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:12:05,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:12:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:12:05,538 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:05,580 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-10-16 11:12:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:12:05,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-10-16 11:12:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:05,582 INFO L225 Difference]: With dead ends: 40 [2022-10-16 11:12:05,582 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 11:12:05,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:12:05,585 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:05,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 11:12:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-10-16 11:12:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-10-16 11:12:05,596 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 9 [2022-10-16 11:12:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:05,597 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-10-16 11:12:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-10-16 11:12:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:12:05,598 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:05,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:05,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 11:12:05,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1318195863, now seen corresponding path program 1 times [2022-10-16 11:12:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:05,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455468565] [2022-10-16 11:12:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455468565] [2022-10-16 11:12:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455468565] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218761626] [2022-10-16 11:12:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:05,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:05,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:05,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 11:12:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:05,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:12:05,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:05,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:12:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:06,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218761626] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:12:06,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:12:06,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:12:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667159487] [2022-10-16 11:12:06,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:12:06,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:12:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:12:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:12:06,078 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:06,272 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2022-10-16 11:12:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:12:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 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 15 [2022-10-16 11:12:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:06,275 INFO L225 Difference]: With dead ends: 69 [2022-10-16 11:12:06,275 INFO L226 Difference]: Without dead ends: 68 [2022-10-16 11:12:06,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:12:06,278 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:06,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 107 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:12:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-10-16 11:12:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2022-10-16 11:12:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.288888888888889) internal successors, (58), 49 states have internal predecessors, (58), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-10-16 11:12:06,294 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 15 [2022-10-16 11:12:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:06,294 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-10-16 11:12:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-10-16 11:12:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:12:06,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:06,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:06,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:06,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 11:12:06,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2085601264, now seen corresponding path program 1 times [2022-10-16 11:12:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:06,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966090104] [2022-10-16 11:12:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:06,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966090104] [2022-10-16 11:12:06,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966090104] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001611860] [2022-10-16 11:12:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:06,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:06,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:06,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 11:12:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:06,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:12:06,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:06,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:12:06,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001611860] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:06,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:12:06,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:12:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713017450] [2022-10-16 11:12:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:06,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:12:06,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:12:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:12:06,834 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 6 states, 5 states have (on average 3.2) 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) [2022-10-16 11:12:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:06,899 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-10-16 11:12:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:12:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) 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 16 [2022-10-16 11:12:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:06,907 INFO L225 Difference]: With dead ends: 55 [2022-10-16 11:12:06,907 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 11:12:06,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:12:06,918 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:06,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:06,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 11:12:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-10-16 11:12:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-10-16 11:12:06,944 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 16 [2022-10-16 11:12:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:06,948 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-10-16 11:12:06,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) 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) [2022-10-16 11:12:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-10-16 11:12:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:12:06,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:06,952 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:06,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-16 11:12:07,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash 565249040, now seen corresponding path program 1 times [2022-10-16 11:12:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:07,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530752670] [2022-10-16 11:12:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:07,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 11:12:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:12:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530752670] [2022-10-16 11:12:07,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530752670] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:07,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:07,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:12:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241211451] [2022-10-16 11:12:07,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:12:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:12:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:12:07,307 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:07,331 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2022-10-16 11:12:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:12:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-10-16 11:12:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:07,333 INFO L225 Difference]: With dead ends: 58 [2022-10-16 11:12:07,334 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 11:12:07,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:12:07,336 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:07,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 11:12:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 11:12:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:12:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-10-16 11:12:07,348 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 22 [2022-10-16 11:12:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:07,349 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-10-16 11:12:07,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-10-16 11:12:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:12:07,351 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:07,351 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 11:12:07,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 942438630, now seen corresponding path program 1 times [2022-10-16 11:12:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716414312] [2022-10-16 11:12:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 11:12:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:12:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:07,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716414312] [2022-10-16 11:12:07,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716414312] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:07,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838218188] [2022-10-16 11:12:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:07,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:07,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:07,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:07,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 11:12:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:12:07,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:12:07,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:12:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:12:07,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838218188] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:12:07,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:12:07,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:12:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544628833] [2022-10-16 11:12:07,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:12:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:12:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:12:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:12:07,783 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 11:12:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:07,829 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2022-10-16 11:12:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:12:07,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2022-10-16 11:12:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:07,831 INFO L225 Difference]: With dead ends: 71 [2022-10-16 11:12:07,831 INFO L226 Difference]: Without dead ends: 70 [2022-10-16 11:12:07,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:12:07,833 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:07,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 89 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-16 11:12:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-10-16 11:12:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 60 states have (on average 1.2) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 11:12:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2022-10-16 11:12:07,844 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 27 [2022-10-16 11:12:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:07,844 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2022-10-16 11:12:07,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 11:12:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2022-10-16 11:12:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:12:07,846 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:07,846 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:07,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:08,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting strlen_recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash -849173462, now seen corresponding path program 1 times [2022-10-16 11:12:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283187315] [2022-10-16 11:12:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 11:12:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 11:12:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:08,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283187315] [2022-10-16 11:12:08,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283187315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:08,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:12:08,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:12:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567289067] [2022-10-16 11:12:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:08,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:12:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:12:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:08,129 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:08,138 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-10-16 11:12:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:12:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-10-16 11:12:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:08,140 INFO L225 Difference]: With dead ends: 70 [2022-10-16 11:12:08,140 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 11:12:08,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:12:08,142 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 11:12:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-16 11:12:08,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.15) internal successors, (69), 62 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 11:12:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-10-16 11:12:08,153 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 28 [2022-10-16 11:12:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:08,154 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-10-16 11:12:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-10-16 11:12:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:12:08,156 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:08,156 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 11:12:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 11:12:08,156 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:08,157 INFO L85 PathProgramCache]: Analyzing trace with hash 952461527, now seen corresponding path program 2 times [2022-10-16 11:12:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:08,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009332335] [2022-10-16 11:12:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:12:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009332335] [2022-10-16 11:12:08,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009332335] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:08,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152687847] [2022-10-16 11:12:08,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:12:08,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:08,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:08,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 11:12:08,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:12:08,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:12:08,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:12:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 11:12:08,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:12:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 11:12:08,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152687847] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:12:08,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:12:08,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2022-10-16 11:12:08,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313680320] [2022-10-16 11:12:08,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:12:08,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:12:08,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:08,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:12:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:12:08,635 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:08,889 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2022-10-16 11:12:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:12:08,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 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 33 [2022-10-16 11:12:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:08,893 INFO L225 Difference]: With dead ends: 97 [2022-10-16 11:12:08,893 INFO L226 Difference]: Without dead ends: 96 [2022-10-16 11:12:08,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2022-10-16 11:12:08,896 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 109 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:08,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 121 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:12:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-16 11:12:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 45. [2022-10-16 11:12:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 11:12:08,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-10-16 11:12:08,905 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 33 [2022-10-16 11:12:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:08,906 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-10-16 11:12:08,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:12:08,906 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-10-16 11:12:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 11:12:08,908 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:08,908 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:08,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:09,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1813231344, now seen corresponding path program 2 times [2022-10-16 11:12:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:09,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505837631] [2022-10-16 11:12:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 11:12:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 11:12:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505837631] [2022-10-16 11:12:09,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505837631] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375975869] [2022-10-16 11:12:09,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:12:09,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:09,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:09,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:09,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 11:12:09,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:12:09,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:12:09,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:12:09,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 11:12:09,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:12:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 11:12:10,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375975869] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:12:10,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:12:10,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-16 11:12:10,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43601212] [2022-10-16 11:12:10,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:12:10,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:12:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:12:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:12:10,389 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 11:12:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:10,475 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2022-10-16 11:12:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 11:12:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 54 [2022-10-16 11:12:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:10,477 INFO L225 Difference]: With dead ends: 76 [2022-10-16 11:12:10,477 INFO L226 Difference]: Without dead ends: 75 [2022-10-16 11:12:10,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:12:10,479 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:10,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 113 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:12:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-16 11:12:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-10-16 11:12:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 11:12:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2022-10-16 11:12:10,490 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 54 [2022-10-16 11:12:10,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:10,490 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2022-10-16 11:12:10,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 24 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 11:12:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2022-10-16 11:12:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-16 11:12:10,494 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:10,495 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:10,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:10,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 11:12:10,710 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1538280370, now seen corresponding path program 3 times [2022-10-16 11:12:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:10,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308045671] [2022-10-16 11:12:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 11:12:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-16 11:12:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308045671] [2022-10-16 11:12:12,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308045671] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:12,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099453581] [2022-10-16 11:12:12,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:12:12,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:12,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:12,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 11:12:12,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 11:12:12,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:12:12,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 11:12:12,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:12,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 11:12:12,401 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 15 treesize of output 7 [2022-10-16 11:12:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-10-16 11:12:12,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:12:12,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099453581] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:12:12,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:12:12,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 28 [2022-10-16 11:12:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721082613] [2022-10-16 11:12:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:12:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:12:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:12,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:12:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-10-16 11:12:12,424 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:12,475 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2022-10-16 11:12:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:12:12,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2022-10-16 11:12:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:12,478 INFO L225 Difference]: With dead ends: 140 [2022-10-16 11:12:12,478 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 11:12:12,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2022-10-16 11:12:12,481 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:12,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 73 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:12:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 11:12:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-10-16 11:12:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 58 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 11:12:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2022-10-16 11:12:12,490 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 99 [2022-10-16 11:12:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:12,490 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2022-10-16 11:12:12,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:12:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2022-10-16 11:12:12,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-16 11:12:12,493 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:12,494 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:12,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 11:12:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:12,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 326697294, now seen corresponding path program 1 times [2022-10-16 11:12:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:12,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720720030] [2022-10-16 11:12:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 11:12:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-10-16 11:12:14,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:14,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720720030] [2022-10-16 11:12:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720720030] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:14,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784679189] [2022-10-16 11:12:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:14,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:14,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:14,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:14,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:12:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:14,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:12:14,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-10-16 11:12:14,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:12:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-10-16 11:12:19,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784679189] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:12:19,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:12:19,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-16 11:12:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201729528] [2022-10-16 11:12:19,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:12:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 11:12:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:12:19,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 11:12:19,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:12:19,263 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 48 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 48 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-10-16 11:12:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:12:19,455 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2022-10-16 11:12:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-10-16 11:12:19,456 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 48 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 102 [2022-10-16 11:12:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:12:19,464 INFO L225 Difference]: With dead ends: 132 [2022-10-16 11:12:19,465 INFO L226 Difference]: Without dead ends: 131 [2022-10-16 11:12:19,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:12:19,468 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:12:19,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 247 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:12:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-10-16 11:12:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-10-16 11:12:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 106 states have internal predecessors, (108), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-10-16 11:12:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2022-10-16 11:12:19,497 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 102 [2022-10-16 11:12:19,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:12:19,498 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2022-10-16 11:12:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 48 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2022-10-16 11:12:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2022-10-16 11:12:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-10-16 11:12:19,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:12:19,511 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:12:19,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 11:12:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:19,717 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:12:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:12:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -650014028, now seen corresponding path program 2 times [2022-10-16 11:12:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:12:19,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282543568] [2022-10-16 11:12:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:12:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:12:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 11:12:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:24,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:12:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:12:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-10-16 11:12:27,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:12:27,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282543568] [2022-10-16 11:12:27,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282543568] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:12:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190430092] [2022-10-16 11:12:27,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:12:27,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:12:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:12:27,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:12:27,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 11:12:27,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:12:27,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:12:27,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 11:12:27,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:12:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-10-16 11:12:27,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:13:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-10-16 11:13:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190430092] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:13:15,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:13:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-16 11:13:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108432933] [2022-10-16 11:13:15,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:13:15,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 11:13:15,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:13:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 11:13:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 11:13:15,473 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 96 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 96 states have internal predecessors, (200), 1 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-10-16 11:13:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:13:15,818 INFO L93 Difference]: Finished difference Result 252 states and 277 transitions. [2022-10-16 11:13:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-10-16 11:13:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 96 states have internal predecessors, (200), 1 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) Word has length 195 [2022-10-16 11:13:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:13:15,822 INFO L225 Difference]: With dead ends: 252 [2022-10-16 11:13:15,822 INFO L226 Difference]: Without dead ends: 251 [2022-10-16 11:13:15,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4764 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 11:13:15,827 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 46 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:13:15,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 268 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:13:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-10-16 11:13:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-10-16 11:13:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 202 states have internal predecessors, (204), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-10-16 11:13:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2022-10-16 11:13:15,841 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 195 [2022-10-16 11:13:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:13:15,842 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2022-10-16 11:13:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.1052631578947367) internal successors, (200), 96 states have internal predecessors, (200), 1 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-10-16 11:13:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2022-10-16 11:13:15,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-10-16 11:13:15,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:13:15,849 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:13:15,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 11:13:16,063 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,SelfDestructingSolverStorable14 [2022-10-16 11:13:16,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:13:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:13:16,065 INFO L85 PathProgramCache]: Analyzing trace with hash 324784308, now seen corresponding path program 3 times [2022-10-16 11:13:16,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:13:16,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834312965] [2022-10-16 11:13:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:13:16,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:13:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 11:13:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:22,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:27,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8696 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 3337 trivial. 0 not checked. [2022-10-16 11:13:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:13:46,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834312965] [2022-10-16 11:13:46,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834312965] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:13:46,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732285107] [2022-10-16 11:13:46,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:13:46,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:13:46,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:13:46,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:13:46,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 11:13:47,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 11:13:47,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:13:47,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 11:13:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:13:47,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-10-16 11:13:47,552 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-10-16 11:13:47,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2022-10-16 11:13:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8696 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 8602 trivial. 0 not checked. [2022-10-16 11:13:47,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:13:47,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732285107] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:13:47,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:13:47,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [95] total 102 [2022-10-16 11:13:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243606441] [2022-10-16 11:13:47,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:13:47,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 11:13:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:13:47,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 11:13:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2365, Invalid=7937, Unknown=0, NotChecked=0, Total=10302 [2022-10-16 11:13:47,627 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:13:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:13:47,694 INFO L93 Difference]: Finished difference Result 500 states and 505 transitions. [2022-10-16 11:13:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:13:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 387 [2022-10-16 11:13:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:13:47,696 INFO L225 Difference]: With dead ends: 500 [2022-10-16 11:13:47,696 INFO L226 Difference]: Without dead ends: 257 [2022-10-16 11:13:47,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2859 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2377, Invalid=8335, Unknown=0, NotChecked=0, Total=10712 [2022-10-16 11:13:47,702 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:13:47,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-10-16 11:13:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-10-16 11:13:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2022-10-16 11:13:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 204 states have (on average 1.0147058823529411) internal successors, (207), 205 states have internal predecessors, (207), 2 states have call successors, (2), 1 states have call predecessors, (2), 47 states have return successors, (47), 47 states have call predecessors, (47), 1 states have call successors, (47) [2022-10-16 11:13:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 256 transitions. [2022-10-16 11:13:47,715 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 256 transitions. Word has length 387 [2022-10-16 11:13:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:13:47,715 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 256 transitions. [2022-10-16 11:13:47,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:13:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 256 transitions. [2022-10-16 11:13:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-10-16 11:13:47,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:13:47,723 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 48, 47, 47, 47, 46, 46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:13:47,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 11:13:47,936 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,SelfDestructingSolverStorable15 [2022-10-16 11:13:47,937 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting strlen_recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:13:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:13:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2123017452, now seen corresponding path program 1 times [2022-10-16 11:13:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:13:47,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785986195] [2022-10-16 11:13:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:13:47,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:13:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 11:13:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:13:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:13:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:02,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:04,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:06,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:09,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:11,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:14:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8842 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 3483 trivial. 0 not checked. [2022-10-16 11:14:12,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:14:12,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785986195] [2022-10-16 11:14:12,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785986195] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:14:12,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855700646] [2022-10-16 11:14:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:14:12,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:14:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:14:12,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:14:12,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 11:14:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:14:13,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-16 11:14:13,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:14:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8842 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 3483 trivial. 0 not checked. [2022-10-16 11:14:13,801 INFO L328 TraceCheckSpWp]: Computing backward predicates...