/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/array01-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:06:56,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:06:56,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:06:56,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:06:56,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:06:56,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:06:56,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:06:56,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:06:56,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:06:56,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:06:56,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:06:56,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:06:56,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:06:56,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:06:56,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:06:56,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:06:56,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:06:56,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:06:56,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:06:56,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:06:56,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:06:56,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:06:56,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:06:56,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:06:56,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:06:56,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:06:56,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:06:56,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:06:56,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:06:56,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:06:56,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:06:56,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:06:56,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:06:56,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:06:56,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:06:56,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:06:56,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:06:56,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:06:56,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:06:56,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:06:56,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:06:56,362 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 11:06:56,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:06:56,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:06:56,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:06:56,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:06:56,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:06:56,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:06:56,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:06:56,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:06:56,407 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:06:56,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:06:56,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:06:56,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:06:56,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:06:56,409 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:06:56,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:06:56,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:06:56,410 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:06:56,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:06:56,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:06:56,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:06:56,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:06:56,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:06:56,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:06:56,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:06:56,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:06:56,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:06:56,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:06:56,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:06:56,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:06:56,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:06:56,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:06:56,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:06:56,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:06:56,866 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:06:56,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-10-16 11:06:56,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732b56d0d/8c73dff4429842fab046dc9903c476b5/FLAGb9efdec1d [2022-10-16 11:06:57,631 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:06:57,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-10-16 11:06:57,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732b56d0d/8c73dff4429842fab046dc9903c476b5/FLAGb9efdec1d [2022-10-16 11:06:57,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732b56d0d/8c73dff4429842fab046dc9903c476b5 [2022-10-16 11:06:57,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:06:57,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:06:57,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:06:57,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:06:57,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:06:57,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:57" (1/1) ... [2022-10-16 11:06:57,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de0b0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:57, skipping insertion in model container [2022-10-16 11:06:57,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:57" (1/1) ... [2022-10-16 11:06:57,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:06:58,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:06:58,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:06:58,390 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:06:58,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:06:58,481 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:06:58,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58 WrapperNode [2022-10-16 11:06:58,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:06:58,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:06:58,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:06:58,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:06:58,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,533 INFO L138 Inliner]: procedures = 116, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2022-10-16 11:06:58,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:06:58,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:06:58,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:06:58,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:06:58,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:06:58,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:06:58,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:06:58,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:06:58,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (1/1) ... [2022-10-16 11:06:58,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:06:58,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:06:58,602 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 11:06:58,618 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 11:06:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:06:58,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:06:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:06:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:06:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:06:58,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:06:58,779 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:06:58,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:06:58,952 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:06:58,961 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:06:58,961 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 11:06:58,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:58 BoogieIcfgContainer [2022-10-16 11:06:58,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:06:58,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:06:58,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:06:58,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:06:58,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:06:57" (1/3) ... [2022-10-16 11:06:58,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaac10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:58, skipping insertion in model container [2022-10-16 11:06:58,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:58" (2/3) ... [2022-10-16 11:06:58,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaac10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:06:58, skipping insertion in model container [2022-10-16 11:06:58,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:06:58" (3/3) ... [2022-10-16 11:06:58,981 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2022-10-16 11:06:59,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:06:59,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-16 11:06:59,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:06:59,154 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;@646a3acc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:06:59,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-16 11:06:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 31 states have internal predecessors, (38), 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 11:06:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:06:59,169 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:06:59,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:06:59,170 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 11:06:59,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:06:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1804971307, now seen corresponding path program 1 times [2022-10-16 11:06:59,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:06:59,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465351917] [2022-10-16 11:06:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:06:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:06:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:06:59,587 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 11:06:59,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:06:59,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465351917] [2022-10-16 11:06:59,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465351917] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:06:59,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:06:59,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:06:59,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662259842] [2022-10-16 11:06:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:06:59,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:06:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:06:59,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:06:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:06:59,665 INFO L87 Difference]: Start difference. First operand has 32 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 11:06:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:06:59,795 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2022-10-16 11:06:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:06:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-10-16 11:06:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:06:59,814 INFO L225 Difference]: With dead ends: 82 [2022-10-16 11:06:59,814 INFO L226 Difference]: Without dead ends: 48 [2022-10-16 11:06:59,821 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 11:06:59,829 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:06:59,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 86 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:06:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-16 11:06:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2022-10-16 11:06:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 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 11:06:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-10-16 11:06:59,895 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 7 [2022-10-16 11:06:59,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:06:59,896 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-10-16 11:06:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 11:06:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-10-16 11:06:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 11:06:59,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:06:59,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:06:59,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:06:59,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:06:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:06:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1139722471, now seen corresponding path program 1 times [2022-10-16 11:06:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:06:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188599049] [2022-10-16 11:06:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:06:59,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:06:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:00,124 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 11:07:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:00,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188599049] [2022-10-16 11:07:00,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188599049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:00,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:00,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:07:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343791911] [2022-10-16 11:07:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:00,132 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:07:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:00,189 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-10-16 11:07:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 11:07:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:00,192 INFO L225 Difference]: With dead ends: 48 [2022-10-16 11:07:00,193 INFO L226 Difference]: Without dead ends: 31 [2022-10-16 11:07:00,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 11:07:00,195 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:00,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 46 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-16 11:07:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-10-16 11:07:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 30 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 11:07:00,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-10-16 11:07:00,210 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2022-10-16 11:07:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:00,210 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-10-16 11:07:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:07:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-10-16 11:07:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:07:00,214 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:00,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:07:00,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 560852455, now seen corresponding path program 1 times [2022-10-16 11:07:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:00,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539768157] [2022-10-16 11:07:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:00,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539768157] [2022-10-16 11:07:00,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539768157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:00,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13057128] [2022-10-16 11:07:00,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:00,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:00,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:00,442 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 11:07:00,463 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 11:07:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:00,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:00,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:00,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:00,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13057128] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:00,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:00,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-10-16 11:07:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064154676] [2022-10-16 11:07:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:00,675 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:00,770 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-10-16 11:07:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 11:07:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:00,773 INFO L225 Difference]: With dead ends: 77 [2022-10-16 11:07:00,773 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 11:07:00,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:07:00,778 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:00,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 104 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 11:07:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-10-16 11:07:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-10-16 11:07:00,794 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 11 [2022-10-16 11:07:00,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:00,794 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-10-16 11:07:00,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-10-16 11:07:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:07:00,796 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:00,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:00,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 11:07:01,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:01,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1240910825, now seen corresponding path program 1 times [2022-10-16 11:07:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:01,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033774728] [2022-10-16 11:07:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033774728] [2022-10-16 11:07:01,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033774728] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:01,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812125866] [2022-10-16 11:07:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:01,131 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 11:07:01,134 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 11:07:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:01,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812125866] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:01,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:01,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533982225] [2022-10-16 11:07:01,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:01,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:01,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:01,270 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 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 11:07:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:01,411 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2022-10-16 11:07:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:01,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 11:07:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:01,415 INFO L225 Difference]: With dead ends: 104 [2022-10-16 11:07:01,416 INFO L226 Difference]: Without dead ends: 103 [2022-10-16 11:07:01,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 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 11:07:01,423 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 98 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:01,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 197 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:01,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-16 11:07:01,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 48. [2022-10-16 11:07:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.4) internal successors, (56), 47 states have internal predecessors, (56), 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 11:07:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2022-10-16 11:07:01,447 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2022-10-16 11:07:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:01,447 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2022-10-16 11:07:01,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 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 11:07:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2022-10-16 11:07:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:07:01,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:01,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:01,492 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 11:07:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 11:07:01,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -186470036, now seen corresponding path program 1 times [2022-10-16 11:07:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:01,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332520358] [2022-10-16 11:07:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332520358] [2022-10-16 11:07:01,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332520358] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:01,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697522791] [2022-10-16 11:07:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:01,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:01,747 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 11:07:01,752 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 11:07:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:01,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:01,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697522791] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:01,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:01,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:07:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977773315] [2022-10-16 11:07:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:01,841 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 11:07:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:01,888 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-10-16 11:07:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-10-16 11:07:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:01,891 INFO L225 Difference]: With dead ends: 48 [2022-10-16 11:07:01,892 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 11:07:01,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 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 11:07:01,893 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 45 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:01,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 70 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 11:07:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-10-16 11:07:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.325) internal successors, (53), 46 states have internal predecessors, (53), 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 11:07:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-10-16 11:07:01,902 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2022-10-16 11:07:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:01,902 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-10-16 11:07:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 11:07:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-10-16 11:07:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 11:07:01,903 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:01,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:01,942 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 11:07:02,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:02,119 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 11:07:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 883322077, now seen corresponding path program 1 times [2022-10-16 11:07:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:02,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745279093] [2022-10-16 11:07:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745279093] [2022-10-16 11:07:02,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745279093] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924378430] [2022-10-16 11:07:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:02,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:02,629 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 11:07:02,643 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 11:07:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:02,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 11:07:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:02,758 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 11:07:02,821 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 11:07:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:02,908 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 14 treesize of output 12 [2022-10-16 11:07:02,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-10-16 11:07:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924378430] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:02,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:02,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-16 11:07:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640401181] [2022-10-16 11:07:02,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:07:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:07:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:07:02,929 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 11:07:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,178 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2022-10-16 11:07:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:07:03,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 14 [2022-10-16 11:07:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,180 INFO L225 Difference]: With dead ends: 73 [2022-10-16 11:07:03,180 INFO L226 Difference]: Without dead ends: 72 [2022-10-16 11:07:03,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:07:03,183 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 96 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 125 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-16 11:07:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 51. [2022-10-16 11:07:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 50 states have internal predecessors, (58), 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 11:07:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-10-16 11:07:03,200 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 14 [2022-10-16 11:07:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,201 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-10-16 11:07:03,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 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 11:07:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-10-16 11:07:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:07:03,202 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,232 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 11:07:03,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:03,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1613179088, now seen corresponding path program 1 times [2022-10-16 11:07:03,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067674915] [2022-10-16 11:07:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067674915] [2022-10-16 11:07:03,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067674915] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:03,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263114331] [2022-10-16 11:07:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:03,470 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), 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 11:07:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,508 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-10-16 11:07:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:03,510 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), 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 11:07:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,511 INFO L225 Difference]: With dead ends: 65 [2022-10-16 11:07:03,511 INFO L226 Difference]: Without dead ends: 63 [2022-10-16 11:07:03,512 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 11:07:03,513 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 63 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-16 11:07:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2022-10-16 11:07:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 59 states have internal predecessors, (71), 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 11:07:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-10-16 11:07:03,534 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 15 [2022-10-16 11:07:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,537 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-10-16 11:07:03,538 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), 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 11:07:03,538 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-10-16 11:07:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:07:03,539 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 11:07:03,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:03,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1613180690, now seen corresponding path program 1 times [2022-10-16 11:07:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353318306] [2022-10-16 11:07:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353318306] [2022-10-16 11:07:03,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353318306] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:03,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442873063] [2022-10-16 11:07:03,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:03,629 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 11:07:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,653 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-10-16 11:07:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:03,654 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), 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 11:07:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,654 INFO L225 Difference]: With dead ends: 60 [2022-10-16 11:07:03,654 INFO L226 Difference]: Without dead ends: 59 [2022-10-16 11:07:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 11:07:03,656 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-16 11:07:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-10-16 11:07:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 58 states have internal predecessors, (69), 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 11:07:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-10-16 11:07:03,665 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 15 [2022-10-16 11:07:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,666 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-10-16 11:07:03,666 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), 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 11:07:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-10-16 11:07:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:07:03,667 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 11:07:03,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1531006081, now seen corresponding path program 1 times [2022-10-16 11:07:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175928007] [2022-10-16 11:07:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175928007] [2022-10-16 11:07:03,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175928007] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:03,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096892183] [2022-10-16 11:07:03,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:03,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:03,716 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 11:07:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,740 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2022-10-16 11:07:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 11:07:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,742 INFO L225 Difference]: With dead ends: 83 [2022-10-16 11:07:03,742 INFO L226 Difference]: Without dead ends: 81 [2022-10-16 11:07:03,743 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 11:07:03,743 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-16 11:07:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2022-10-16 11:07:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 77 states have internal predecessors, (93), 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 11:07:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2022-10-16 11:07:03,755 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 16 [2022-10-16 11:07:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,755 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2022-10-16 11:07:03,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 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 11:07:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2022-10-16 11:07:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:07:03,757 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 11:07:03,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1243795538, now seen corresponding path program 1 times [2022-10-16 11:07:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129603827] [2022-10-16 11:07:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129603827] [2022-10-16 11:07:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129603827] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325148076] [2022-10-16 11:07:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:03,864 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 11:07:03,880 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 11:07:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:07:03,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325148076] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-10-16 11:07:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096663357] [2022-10-16 11:07:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:03,991 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:04,063 INFO L93 Difference]: Finished difference Result 130 states and 153 transitions. [2022-10-16 11:07:04,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 11:07:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:04,066 INFO L225 Difference]: With dead ends: 130 [2022-10-16 11:07:04,066 INFO L226 Difference]: Without dead ends: 94 [2022-10-16 11:07:04,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:04,067 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:04,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 77 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-16 11:07:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2022-10-16 11:07:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 91 states have internal predecessors, (109), 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 11:07:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2022-10-16 11:07:04,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 20 [2022-10-16 11:07:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:04,081 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2022-10-16 11:07:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2022-10-16 11:07:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 11:07:04,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:04,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:04,121 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 11:07:04,298 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,SelfDestructingSolverStorable9 [2022-10-16 11:07:04,299 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 11:07:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash -750349168, now seen corresponding path program 1 times [2022-10-16 11:07:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:04,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020271900] [2022-10-16 11:07:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020271900] [2022-10-16 11:07:04,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020271900] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594267744] [2022-10-16 11:07:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:04,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:04,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:04,429 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 11:07:04,438 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 11:07:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:04,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 11:07:04,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594267744] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:04,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:04,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-16 11:07:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446473375] [2022-10-16 11:07:04,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:07:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:07:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:07:04,679 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:04,832 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2022-10-16 11:07:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 11:07:04,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 11:07:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:04,833 INFO L225 Difference]: With dead ends: 144 [2022-10-16 11:07:04,834 INFO L226 Difference]: Without dead ends: 108 [2022-10-16 11:07:04,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-10-16 11:07:04,835 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:04,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 133 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-16 11:07:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2022-10-16 11:07:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 91 states have internal predecessors, (109), 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 11:07:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2022-10-16 11:07:04,847 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 20 [2022-10-16 11:07:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:04,847 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2022-10-16 11:07:04,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2022-10-16 11:07:04,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:07:04,849 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:04,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:04,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:05,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:05,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1770243030, now seen corresponding path program 1 times [2022-10-16 11:07:05,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069590853] [2022-10-16 11:07:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:05,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069590853] [2022-10-16 11:07:05,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069590853] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570804446] [2022-10-16 11:07:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:05,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:05,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:05,134 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 11:07:05,160 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 11:07:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:05,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:05,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:05,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570804446] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:05,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:05,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157109716] [2022-10-16 11:07:05,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:05,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:05,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:05,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:05,282 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:05,400 INFO L93 Difference]: Finished difference Result 192 states and 229 transitions. [2022-10-16 11:07:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-16 11:07:05,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:05,402 INFO L225 Difference]: With dead ends: 192 [2022-10-16 11:07:05,402 INFO L226 Difference]: Without dead ends: 191 [2022-10-16 11:07:05,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 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 11:07:05,404 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:05,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 228 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-10-16 11:07:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 173. [2022-10-16 11:07:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.281437125748503) internal successors, (214), 172 states have internal predecessors, (214), 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 11:07:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 214 transitions. [2022-10-16 11:07:05,426 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 214 transitions. Word has length 22 [2022-10-16 11:07:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:05,427 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 214 transitions. [2022-10-16 11:07:05,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 214 transitions. [2022-10-16 11:07:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:05,428 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:05,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:05,469 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 11:07:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:05,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:05,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:05,644 INFO L85 PathProgramCache]: Analyzing trace with hash -957040835, now seen corresponding path program 1 times [2022-10-16 11:07:05,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:05,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115009083] [2022-10-16 11:07:05,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:05,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115009083] [2022-10-16 11:07:05,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115009083] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662893312] [2022-10-16 11:07:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:05,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:05,716 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 11:07:05,718 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 11:07:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:07:05,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:05,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662893312] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:05,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:05,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-16 11:07:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311850251] [2022-10-16 11:07:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:05,801 INFO L87 Difference]: Start difference. First operand 173 states and 214 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:05,831 INFO L93 Difference]: Finished difference Result 173 states and 214 transitions. [2022-10-16 11:07:05,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:05,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:05,832 INFO L225 Difference]: With dead ends: 173 [2022-10-16 11:07:05,833 INFO L226 Difference]: Without dead ends: 172 [2022-10-16 11:07:05,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:05,834 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:05,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-16 11:07:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-10-16 11:07:05,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.2275449101796407) internal successors, (205), 171 states have internal predecessors, (205), 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 11:07:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2022-10-16 11:07:05,854 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 23 [2022-10-16 11:07:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:05,854 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2022-10-16 11:07:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2022-10-16 11:07:05,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:05,855 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:05,855 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 11:07:05,897 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 11:07:06,068 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,SelfDestructingSolverStorable12 [2022-10-16 11:07:06,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash -868473059, now seen corresponding path program 2 times [2022-10-16 11:07:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623258863] [2022-10-16 11:07:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623258863] [2022-10-16 11:07:06,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623258863] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:06,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20025640] [2022-10-16 11:07:06,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:06,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:06,224 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 11:07:06,245 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 11:07:06,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:07:06,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:06,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:07:06,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:07:06,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:07:06,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20025640] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:06,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:06,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-10-16 11:07:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615060684] [2022-10-16 11:07:06,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:07:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:07:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:07:06,376 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 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 11:07:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,623 INFO L93 Difference]: Finished difference Result 623 states and 766 transitions. [2022-10-16 11:07:06,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:06,624 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 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 23 [2022-10-16 11:07:06,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,627 INFO L225 Difference]: With dead ends: 623 [2022-10-16 11:07:06,627 INFO L226 Difference]: Without dead ends: 622 [2022-10-16 11:07:06,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-10-16 11:07:06,629 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 212 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 153 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-10-16 11:07:06,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 161. [2022-10-16 11:07:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.2229299363057324) internal successors, (192), 160 states have internal predecessors, (192), 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 11:07:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 192 transitions. [2022-10-16 11:07:06,676 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 192 transitions. Word has length 23 [2022-10-16 11:07:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,677 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 192 transitions. [2022-10-16 11:07:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 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 11:07:06,677 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 192 transitions. [2022-10-16 11:07:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 11:07:06,678 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,715 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 11:07:06,892 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,SelfDestructingSolverStorable13 [2022-10-16 11:07:06,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash 832443988, now seen corresponding path program 2 times [2022-10-16 11:07:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945207416] [2022-10-16 11:07:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:07,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:07,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945207416] [2022-10-16 11:07:07,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945207416] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:07,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188898465] [2022-10-16 11:07:07,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:07,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:07,253 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 11:07:07,256 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 11:07:07,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:07,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:07,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:07:07,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:07,371 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 15 treesize of output 11 [2022-10-16 11:07:07,927 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:07:07,927 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 23 treesize of output 10 [2022-10-16 11:07:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:07,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:08,455 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 18 treesize of output 16 [2022-10-16 11:07:08,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-10-16 11:07:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:08,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188898465] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:08,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:08,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 31 [2022-10-16 11:07:08,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023023372] [2022-10-16 11:07:08,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:08,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 11:07:08,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:08,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 11:07:08,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-10-16 11:07:08,505 INFO L87 Difference]: Start difference. First operand 161 states and 192 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 32 states have internal predecessors, (60), 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 11:07:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:09,077 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2022-10-16 11:07:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 11:07:09,078 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 32 states have internal predecessors, (60), 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 24 [2022-10-16 11:07:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:09,079 INFO L225 Difference]: With dead ends: 190 [2022-10-16 11:07:09,080 INFO L226 Difference]: Without dead ends: 189 [2022-10-16 11:07:09,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=212, Invalid=1768, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 11:07:09,082 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:09,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 205 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-10-16 11:07:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-10-16 11:07:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-10-16 11:07:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 1.2285714285714286) internal successors, (215), 178 states have internal predecessors, (215), 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 11:07:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 215 transitions. [2022-10-16 11:07:09,110 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 215 transitions. Word has length 24 [2022-10-16 11:07:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:09,111 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 215 transitions. [2022-10-16 11:07:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 32 states have internal predecessors, (60), 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 11:07:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 215 transitions. [2022-10-16 11:07:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:07:09,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:09,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:09,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:09,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 11:07:09,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:09,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 35958329, now seen corresponding path program 1 times [2022-10-16 11:07:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:09,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982297951] [2022-10-16 11:07:09,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:09,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982297951] [2022-10-16 11:07:09,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982297951] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499262965] [2022-10-16 11:07:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:09,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:09,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:09,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 11:07:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:09,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:09,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:09,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499262965] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:09,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:09,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475579504] [2022-10-16 11:07:09,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:09,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:09,533 INFO L87 Difference]: Start difference. First operand 179 states and 215 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:09,679 INFO L93 Difference]: Finished difference Result 394 states and 503 transitions. [2022-10-16 11:07:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:09,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-16 11:07:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:09,682 INFO L225 Difference]: With dead ends: 394 [2022-10-16 11:07:09,682 INFO L226 Difference]: Without dead ends: 393 [2022-10-16 11:07:09,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 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 11:07:09,683 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:09,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 103 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-10-16 11:07:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 377. [2022-10-16 11:07:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 373 states have (on average 1.2680965147453083) internal successors, (473), 376 states have internal predecessors, (473), 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 11:07:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 473 transitions. [2022-10-16 11:07:09,736 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 473 transitions. Word has length 25 [2022-10-16 11:07:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:09,737 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 473 transitions. [2022-10-16 11:07:09,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 473 transitions. [2022-10-16 11:07:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 11:07:09,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:09,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:09,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 11:07:09,952 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1114708290, now seen corresponding path program 1 times [2022-10-16 11:07:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:09,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806317848] [2022-10-16 11:07:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:10,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806317848] [2022-10-16 11:07:10,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806317848] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158253653] [2022-10-16 11:07:10,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:10,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:10,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:10,012 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:10,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 11:07:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:10,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:10,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:10,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158253653] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:10,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:10,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:07:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845646571] [2022-10-16 11:07:10,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:10,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:10,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:10,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:10,096 INFO L87 Difference]: Start difference. First operand 377 states and 473 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:10,174 INFO L93 Difference]: Finished difference Result 378 states and 473 transitions. [2022-10-16 11:07:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 11:07:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:10,177 INFO L225 Difference]: With dead ends: 378 [2022-10-16 11:07:10,177 INFO L226 Difference]: Without dead ends: 377 [2022-10-16 11:07:10,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 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 11:07:10,178 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:10,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-10-16 11:07:10,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 376. [2022-10-16 11:07:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 373 states have (on average 1.2198391420911527) internal successors, (455), 375 states have internal predecessors, (455), 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 11:07:10,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 455 transitions. [2022-10-16 11:07:10,233 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 455 transitions. Word has length 26 [2022-10-16 11:07:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:10,233 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 455 transitions. [2022-10-16 11:07:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 455 transitions. [2022-10-16 11:07:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:07:10,234 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:10,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:10,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-10-16 11:07:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:07:10,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1323887080, now seen corresponding path program 3 times [2022-10-16 11:07:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542197011] [2022-10-16 11:07:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542197011] [2022-10-16 11:07:10,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542197011] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:10,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213995400] [2022-10-16 11:07:10,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:07:10,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:10,925 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:10,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 11:07:10,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-16 11:07:10,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:10,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-16 11:07:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:11,019 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 15 treesize of output 11 [2022-10-16 11:07:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:07:11,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-10-16 11:07:11,180 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 11:07:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:11,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:31,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-10-16 11:07:31,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 122 [2022-10-16 11:07:31,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:31,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213995400] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:31,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:31,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2022-10-16 11:07:31,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491528279] [2022-10-16 11:07:31,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:31,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 11:07:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 11:07:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=601, Unknown=19, NotChecked=0, Total=702 [2022-10-16 11:07:31,184 INFO L87 Difference]: Start difference. First operand 376 states and 455 transitions. Second operand has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:36,301 INFO L93 Difference]: Finished difference Result 425 states and 503 transitions. [2022-10-16 11:07:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 11:07:36,302 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-16 11:07:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:36,304 INFO L225 Difference]: With dead ends: 425 [2022-10-16 11:07:36,304 INFO L226 Difference]: Without dead ends: 424 [2022-10-16 11:07:36,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=331, Invalid=1900, Unknown=25, NotChecked=0, Total=2256 [2022-10-16 11:07:36,306 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 190 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:36,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 298 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 567 Invalid, 0 Unknown, 39 Unchecked, 0.4s Time] [2022-10-16 11:07:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-10-16 11:07:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 363. [2022-10-16 11:07:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 360 states have (on average 1.2027777777777777) internal successors, (433), 362 states have internal predecessors, (433), 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 11:07:36,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 433 transitions. [2022-10-16 11:07:36,358 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 433 transitions. Word has length 28 [2022-10-16 11:07:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:36,358 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 433 transitions. [2022-10-16 11:07:36,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 433 transitions. [2022-10-16 11:07:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 11:07:36,359 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:36,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:36,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:36,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 11:07:36,573 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash -524263091, now seen corresponding path program 4 times [2022-10-16 11:07:36,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:36,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306247608] [2022-10-16 11:07:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:37,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306247608] [2022-10-16 11:07:37,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306247608] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100316961] [2022-10-16 11:07:37,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:07:37,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:37,164 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:37,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 11:07:37,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:07:37,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:37,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-16 11:07:37,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:37,328 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 13 treesize of output 9 [2022-10-16 11:07:37,527 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 19 treesize of output 7 [2022-10-16 11:07:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:37,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:37,750 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 16 treesize of output 14 [2022-10-16 11:07:37,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:07:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:37,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100316961] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:37,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:37,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 33 [2022-10-16 11:07:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601928071] [2022-10-16 11:07:37,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:37,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 11:07:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 11:07:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:37,786 INFO L87 Difference]: Start difference. First operand 363 states and 433 transitions. Second operand has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:39,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:39,714 INFO L93 Difference]: Finished difference Result 744 states and 873 transitions. [2022-10-16 11:07:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 11:07:39,715 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-10-16 11:07:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:39,719 INFO L225 Difference]: With dead ends: 744 [2022-10-16 11:07:39,719 INFO L226 Difference]: Without dead ends: 743 [2022-10-16 11:07:39,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=418, Invalid=3742, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 11:07:39,723 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 249 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:39,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 838 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 11:07:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-10-16 11:07:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 448. [2022-10-16 11:07:39,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 445 states have (on average 1.1842696629213483) internal successors, (527), 447 states have internal predecessors, (527), 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 11:07:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 527 transitions. [2022-10-16 11:07:39,789 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 527 transitions. Word has length 34 [2022-10-16 11:07:39,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:39,790 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 527 transitions. [2022-10-16 11:07:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.606060606060606) internal successors, (86), 34 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 527 transitions. [2022-10-16 11:07:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:07:39,791 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:39,791 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:39,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:40,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:40,005 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:40,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1420555232, now seen corresponding path program 1 times [2022-10-16 11:07:40,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:40,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766111723] [2022-10-16 11:07:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:07:40,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:40,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766111723] [2022-10-16 11:07:40,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766111723] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:40,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264126042] [2022-10-16 11:07:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:40,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:40,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:40,195 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:40,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 11:07:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:40,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 11:07:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:07:40,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:07:40,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264126042] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:40,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:40,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-10-16 11:07:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903155389] [2022-10-16 11:07:40,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:40,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 11:07:40,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 11:07:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:07:40,551 INFO L87 Difference]: Start difference. First operand 448 states and 527 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 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 11:07:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:40,897 INFO L93 Difference]: Finished difference Result 600 states and 708 transitions. [2022-10-16 11:07:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:07:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-10-16 11:07:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:40,899 INFO L225 Difference]: With dead ends: 600 [2022-10-16 11:07:40,900 INFO L226 Difference]: Without dead ends: 404 [2022-10-16 11:07:40,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:40,905 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 134 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:40,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 191 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-10-16 11:07:40,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 368. [2022-10-16 11:07:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 365 states have (on average 1.1753424657534246) internal successors, (429), 367 states have internal predecessors, (429), 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 11:07:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 429 transitions. [2022-10-16 11:07:40,965 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 429 transitions. Word has length 36 [2022-10-16 11:07:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:40,965 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 429 transitions. [2022-10-16 11:07:40,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 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 11:07:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 429 transitions. [2022-10-16 11:07:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 11:07:40,967 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:40,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:41,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:41,181 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1321761445, now seen corresponding path program 2 times [2022-10-16 11:07:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:41,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414319197] [2022-10-16 11:07:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:41,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414319197] [2022-10-16 11:07:41,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414319197] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:41,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39367380] [2022-10-16 11:07:41,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:41,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:41,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:41,362 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:41,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 11:07:41,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:41,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:07:41,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:41,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:41,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39367380] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:41,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:41,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-16 11:07:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903678454] [2022-10-16 11:07:41,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:07:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:07:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:07:41,641 INFO L87 Difference]: Start difference. First operand 368 states and 429 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 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 11:07:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:42,031 INFO L93 Difference]: Finished difference Result 816 states and 964 transitions. [2022-10-16 11:07:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 11:07:42,032 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 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 40 [2022-10-16 11:07:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:42,037 INFO L225 Difference]: With dead ends: 816 [2022-10-16 11:07:42,037 INFO L226 Difference]: Without dead ends: 815 [2022-10-16 11:07:42,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:42,039 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 225 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:42,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 195 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-10-16 11:07:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 788. [2022-10-16 11:07:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 1.1656050955414012) internal successors, (915), 787 states have internal predecessors, (915), 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 11:07:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 915 transitions. [2022-10-16 11:07:42,229 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 915 transitions. Word has length 40 [2022-10-16 11:07:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:42,229 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 915 transitions. [2022-10-16 11:07:42,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 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 11:07:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 915 transitions. [2022-10-16 11:07:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 11:07:42,231 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:42,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:42,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:42,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1420800194, now seen corresponding path program 5 times [2022-10-16 11:07:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:42,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811728179] [2022-10-16 11:07:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:42,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811728179] [2022-10-16 11:07:42,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811728179] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:42,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279163889] [2022-10-16 11:07:42,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:07:42,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:42,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:42,808 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:42,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 11:07:42,900 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-10-16 11:07:42,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:42,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 11:07:42,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:43,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:43,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279163889] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:43,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:43,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2022-10-16 11:07:43,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466556778] [2022-10-16 11:07:43,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:43,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 11:07:43,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 11:07:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-10-16 11:07:43,404 INFO L87 Difference]: Start difference. First operand 788 states and 915 transitions. Second operand has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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 11:07:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:43,985 INFO L93 Difference]: Finished difference Result 1455 states and 1688 transitions. [2022-10-16 11:07:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 11:07:43,985 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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 40 [2022-10-16 11:07:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:43,991 INFO L225 Difference]: With dead ends: 1455 [2022-10-16 11:07:43,991 INFO L226 Difference]: Without dead ends: 1152 [2022-10-16 11:07:43,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 11:07:43,996 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 251 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:43,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 216 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:07:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-10-16 11:07:44,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 902. [2022-10-16 11:07:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 899 states have (on average 1.1590656284760845) internal successors, (1042), 901 states have internal predecessors, (1042), 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 11:07:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1042 transitions. [2022-10-16 11:07:44,177 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1042 transitions. Word has length 40 [2022-10-16 11:07:44,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:44,177 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1042 transitions. [2022-10-16 11:07:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5714285714285716) internal successors, (72), 28 states have internal predecessors, (72), 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 11:07:44,178 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1042 transitions. [2022-10-16 11:07:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 11:07:44,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:44,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:44,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:44,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:44,394 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash -631723898, now seen corresponding path program 6 times [2022-10-16 11:07:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:44,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204262135] [2022-10-16 11:07:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:45,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204262135] [2022-10-16 11:07:45,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204262135] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:45,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028795560] [2022-10-16 11:07:45,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:07:45,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:45,241 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:45,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 11:07:45,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-10-16 11:07:45,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 43 conjunts are in the unsatisfiable core [2022-10-16 11:07:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:45,485 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 13 treesize of output 9 [2022-10-16 11:07:45,817 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 19 treesize of output 7 [2022-10-16 11:07:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:45,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:46,185 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 16 treesize of output 14 [2022-10-16 11:07:46,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:07:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:46,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028795560] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:46,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:46,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 43 [2022-10-16 11:07:46,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939912462] [2022-10-16 11:07:46,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:46,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 11:07:46,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 11:07:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 11:07:46,229 INFO L87 Difference]: Start difference. First operand 902 states and 1042 transitions. Second operand has 44 states, 43 states have (on average 2.604651162790698) internal successors, (112), 44 states have internal predecessors, (112), 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 11:07:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:49,630 INFO L93 Difference]: Finished difference Result 1496 states and 1681 transitions. [2022-10-16 11:07:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 11:07:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.604651162790698) internal successors, (112), 44 states have internal predecessors, (112), 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 44 [2022-10-16 11:07:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:49,638 INFO L225 Difference]: With dead ends: 1496 [2022-10-16 11:07:49,638 INFO L226 Difference]: Without dead ends: 1495 [2022-10-16 11:07:49,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=572, Invalid=6910, Unknown=0, NotChecked=0, Total=7482 [2022-10-16 11:07:49,642 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 334 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:49,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1311 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 11:07:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-10-16 11:07:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 872. [2022-10-16 11:07:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 869 states have (on average 1.140391254315305) internal successors, (991), 871 states have internal predecessors, (991), 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 11:07:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 991 transitions. [2022-10-16 11:07:49,774 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 991 transitions. Word has length 44 [2022-10-16 11:07:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:49,774 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 991 transitions. [2022-10-16 11:07:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.604651162790698) internal successors, (112), 44 states have internal predecessors, (112), 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 11:07:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 991 transitions. [2022-10-16 11:07:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 11:07:49,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:49,776 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:49,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:49,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:49,990 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1576659259, now seen corresponding path program 7 times [2022-10-16 11:07:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:49,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295801884] [2022-10-16 11:07:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 29 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:50,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:50,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295801884] [2022-10-16 11:07:50,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295801884] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:50,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028557860] [2022-10-16 11:07:50,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 11:07:50,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:50,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:50,409 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:50,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 11:07:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:50,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 11:07:50,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:50,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:51,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028557860] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:51,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:51,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2022-10-16 11:07:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004801474] [2022-10-16 11:07:51,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 11:07:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 11:07:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:51,049 INFO L87 Difference]: Start difference. First operand 872 states and 991 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 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 11:07:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:51,851 INFO L93 Difference]: Finished difference Result 1710 states and 1923 transitions. [2022-10-16 11:07:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 11:07:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 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 50 [2022-10-16 11:07:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:51,859 INFO L225 Difference]: With dead ends: 1710 [2022-10-16 11:07:51,859 INFO L226 Difference]: Without dead ends: 1524 [2022-10-16 11:07:51,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=3254, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 11:07:51,862 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 408 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:51,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 307 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:07:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2022-10-16 11:07:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 986. [2022-10-16 11:07:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 983 states have (on average 1.1373346897253307) internal successors, (1118), 985 states have internal predecessors, (1118), 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 11:07:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1118 transitions. [2022-10-16 11:07:52,002 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1118 transitions. Word has length 50 [2022-10-16 11:07:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:52,002 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1118 transitions. [2022-10-16 11:07:52,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 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 11:07:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1118 transitions. [2022-10-16 11:07:52,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 11:07:52,004 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:52,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:52,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:52,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:52,216 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:07:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1724711937, now seen corresponding path program 8 times [2022-10-16 11:07:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:52,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861672791] [2022-10-16 11:07:52,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:53,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:53,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861672791] [2022-10-16 11:07:53,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861672791] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:53,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813173549] [2022-10-16 11:07:53,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:53,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:53,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:53,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 11:07:53,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:53,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:53,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:07:53,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:53,464 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 15 treesize of output 11 [2022-10-16 11:07:54,678 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:07:54,678 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 23 treesize of output 10 [2022-10-16 11:07:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:54,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:56,135 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 18 treesize of output 16 [2022-10-16 11:07:56,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-10-16 11:07:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:56,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813173549] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:56,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:56,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 61 [2022-10-16 11:07:56,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460135032] [2022-10-16 11:07:56,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:56,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-10-16 11:07:56,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-10-16 11:07:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3516, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 11:07:56,383 INFO L87 Difference]: Start difference. First operand 986 states and 1118 transitions. Second operand has 62 states, 61 states have (on average 2.262295081967213) internal successors, (138), 62 states have internal predecessors, (138), 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 11:07:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:59,628 INFO L93 Difference]: Finished difference Result 1864 states and 2126 transitions. [2022-10-16 11:07:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 11:07:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.262295081967213) internal successors, (138), 62 states have internal predecessors, (138), 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 54 [2022-10-16 11:07:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:59,642 INFO L225 Difference]: With dead ends: 1864 [2022-10-16 11:07:59,642 INFO L226 Difference]: Without dead ends: 1863 [2022-10-16 11:07:59,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=740, Invalid=10816, Unknown=0, NotChecked=0, Total=11556 [2022-10-16 11:07:59,650 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 956 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:59,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 794 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 721 Invalid, 0 Unknown, 956 Unchecked, 0.4s Time] [2022-10-16 11:07:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-10-16 11:07:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1287. [2022-10-16 11:07:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1284 states have (on average 1.1355140186915889) internal successors, (1458), 1286 states have internal predecessors, (1458), 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 11:07:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1458 transitions. [2022-10-16 11:07:59,906 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1458 transitions. Word has length 54 [2022-10-16 11:07:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:59,906 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1458 transitions. [2022-10-16 11:07:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.262295081967213) internal successors, (138), 62 states have internal predecessors, (138), 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 11:07:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1458 transitions. [2022-10-16 11:07:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 11:07:59,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:59,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:59,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:00,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 11:08:00,124 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:00,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1926464018, now seen corresponding path program 2 times [2022-10-16 11:08:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:00,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328184575] [2022-10-16 11:08:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-16 11:08:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328184575] [2022-10-16 11:08:00,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328184575] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178979771] [2022-10-16 11:08:00,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:08:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:00,280 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:00,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 11:08:00,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:08:00,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:00,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 11:08:00,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 11:08:00,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 11:08:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178979771] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:00,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:00,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-10-16 11:08:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443244932] [2022-10-16 11:08:00,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:08:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:08:00,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:08:00,523 INFO L87 Difference]: Start difference. First operand 1287 states and 1458 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:08:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:01,053 INFO L93 Difference]: Finished difference Result 1988 states and 2238 transitions. [2022-10-16 11:08:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:08:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-10-16 11:08:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:01,062 INFO L225 Difference]: With dead ends: 1988 [2022-10-16 11:08:01,062 INFO L226 Difference]: Without dead ends: 1987 [2022-10-16 11:08:01,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2022-10-16 11:08:01,063 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 185 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:01,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 76 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:08:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2022-10-16 11:08:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1153. [2022-10-16 11:08:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1151 states have (on average 1.1303214596003475) internal successors, (1301), 1152 states have internal predecessors, (1301), 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 11:08:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1301 transitions. [2022-10-16 11:08:01,262 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1301 transitions. Word has length 55 [2022-10-16 11:08:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:01,263 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1301 transitions. [2022-10-16 11:08:01,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:08:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1301 transitions. [2022-10-16 11:08:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 11:08:01,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:01,265 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:01,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:01,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 11:08:01,479 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:01,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1738732349, now seen corresponding path program 9 times [2022-10-16 11:08:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:01,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455919264] [2022-10-16 11:08:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:01,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:02,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455919264] [2022-10-16 11:08:02,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455919264] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845660917] [2022-10-16 11:08:02,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:08:02,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:02,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:02,465 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:02,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 11:08:02,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-10-16 11:08:02,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:02,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 55 conjunts are in the unsatisfiable core [2022-10-16 11:08:02,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:02,892 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 13 treesize of output 9 [2022-10-16 11:08:02,950 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-16 11:08:02,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-10-16 11:08:03,450 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 19 treesize of output 7 [2022-10-16 11:08:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:08:03,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:19,228 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 16 treesize of output 14 [2022-10-16 11:08:19,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:08:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:08:19,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845660917] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:19,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:19,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 55 [2022-10-16 11:08:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769064190] [2022-10-16 11:08:19,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-16 11:08:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-16 11:08:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2924, Unknown=0, NotChecked=0, Total=3080 [2022-10-16 11:08:19,285 INFO L87 Difference]: Start difference. First operand 1153 states and 1301 transitions. Second operand has 56 states, 55 states have (on average 2.618181818181818) internal successors, (144), 56 states have internal predecessors, (144), 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 11:08:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:27,214 INFO L93 Difference]: Finished difference Result 3533 states and 3953 transitions. [2022-10-16 11:08:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-10-16 11:08:27,215 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.618181818181818) internal successors, (144), 56 states have internal predecessors, (144), 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 58 [2022-10-16 11:08:27,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:27,228 INFO L225 Difference]: With dead ends: 3533 [2022-10-16 11:08:27,228 INFO L226 Difference]: Without dead ends: 3532 [2022-10-16 11:08:27,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4713 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=1342, Invalid=20120, Unknown=0, NotChecked=0, Total=21462 [2022-10-16 11:08:27,233 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 642 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 4209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:27,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1892 Invalid, 4209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 11:08:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2022-10-16 11:08:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 1042. [2022-10-16 11:08:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1040 states have (on average 1.1259615384615385) internal successors, (1171), 1041 states have internal predecessors, (1171), 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 11:08:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1171 transitions. [2022-10-16 11:08:27,461 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1171 transitions. Word has length 58 [2022-10-16 11:08:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:27,462 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1171 transitions. [2022-10-16 11:08:27,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.618181818181818) internal successors, (144), 56 states have internal predecessors, (144), 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 11:08:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1171 transitions. [2022-10-16 11:08:27,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-16 11:08:27,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:27,464 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:27,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 11:08:27,678 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash 318729144, now seen corresponding path program 10 times [2022-10-16 11:08:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:27,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474895199] [2022-10-16 11:08:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474895199] [2022-10-16 11:08:28,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474895199] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010556752] [2022-10-16 11:08:28,761 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:08:28,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:28,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:28,763 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:28,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 11:08:28,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:08:28,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 59 conjunts are in the unsatisfiable core [2022-10-16 11:08:28,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:29,177 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 13 treesize of output 9 [2022-10-16 11:08:29,855 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 19 treesize of output 7 [2022-10-16 11:08:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:29,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:30,656 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 16 treesize of output 14 [2022-10-16 11:08:30,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:08:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:30,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010556752] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:30,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:30,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 63 [2022-10-16 11:08:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539645359] [2022-10-16 11:08:30,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-10-16 11:08:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-10-16 11:08:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2022-10-16 11:08:30,725 INFO L87 Difference]: Start difference. First operand 1042 states and 1171 transitions. Second operand has 64 states, 63 states have (on average 2.6031746031746033) internal successors, (164), 64 states have internal predecessors, (164), 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 11:08:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:39,013 INFO L93 Difference]: Finished difference Result 3292 states and 3676 transitions. [2022-10-16 11:08:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-10-16 11:08:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.6031746031746033) internal successors, (164), 64 states have internal predecessors, (164), 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 64 [2022-10-16 11:08:39,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:39,027 INFO L225 Difference]: With dead ends: 3292 [2022-10-16 11:08:39,028 INFO L226 Difference]: Without dead ends: 3291 [2022-10-16 11:08:39,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2925 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=880, Invalid=16150, Unknown=0, NotChecked=0, Total=17030 [2022-10-16 11:08:39,031 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 493 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 7195 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 7304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 7195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:39,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 3433 Invalid, 7304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 7195 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-16 11:08:39,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2022-10-16 11:08:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1151. [2022-10-16 11:08:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1149 states have (on average 1.124456048738033) internal successors, (1292), 1150 states have internal predecessors, (1292), 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 11:08:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1292 transitions. [2022-10-16 11:08:39,255 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1292 transitions. Word has length 64 [2022-10-16 11:08:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1292 transitions. [2022-10-16 11:08:39,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.6031746031746033) internal successors, (164), 64 states have internal predecessors, (164), 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 11:08:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1292 transitions. [2022-10-16 11:08:39,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 11:08:39,258 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:39,258 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:39,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:39,469 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash -616642229, now seen corresponding path program 2 times [2022-10-16 11:08:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264543554] [2022-10-16 11:08:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:39,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 59 proven. 72 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:08:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:39,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264543554] [2022-10-16 11:08:39,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264543554] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:39,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242762643] [2022-10-16 11:08:39,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:08:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:39,946 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:39,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 11:08:40,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:08:40,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 11:08:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:08:40,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:08:40,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242762643] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:40,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:40,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 40 [2022-10-16 11:08:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167087369] [2022-10-16 11:08:40,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-16 11:08:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-16 11:08:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 11:08:40,758 INFO L87 Difference]: Start difference. First operand 1151 states and 1292 transitions. Second operand has 40 states, 40 states have (on average 2.85) internal successors, (114), 40 states have internal predecessors, (114), 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 11:08:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:42,019 INFO L93 Difference]: Finished difference Result 2354 states and 2604 transitions. [2022-10-16 11:08:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 11:08:42,019 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.85) internal successors, (114), 40 states have internal predecessors, (114), 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 66 [2022-10-16 11:08:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:42,025 INFO L225 Difference]: With dead ends: 2354 [2022-10-16 11:08:42,026 INFO L226 Difference]: Without dead ends: 2169 [2022-10-16 11:08:42,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 96 SyntacticMatches, 21 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=818, Invalid=5344, Unknown=0, NotChecked=0, Total=6162 [2022-10-16 11:08:42,027 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 521 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:42,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 417 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:08:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2022-10-16 11:08:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 1233. [2022-10-16 11:08:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1231 states have (on average 1.1218521527213647) internal successors, (1381), 1232 states have internal predecessors, (1381), 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 11:08:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1381 transitions. [2022-10-16 11:08:42,363 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1381 transitions. Word has length 66 [2022-10-16 11:08:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:42,363 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1381 transitions. [2022-10-16 11:08:42,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.85) internal successors, (114), 40 states have internal predecessors, (114), 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 11:08:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1381 transitions. [2022-10-16 11:08:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 11:08:42,365 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:42,366 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:42,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:42,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 11:08:42,580 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1237713171, now seen corresponding path program 11 times [2022-10-16 11:08:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:42,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487382901] [2022-10-16 11:08:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 77 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:43,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:43,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487382901] [2022-10-16 11:08:43,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487382901] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:43,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108988077] [2022-10-16 11:08:43,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:08:43,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:43,147 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:43,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 11:08:43,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-16 11:08:43,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:43,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 11:08:43,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:43,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:44,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108988077] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:44,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:44,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 46 [2022-10-16 11:08:44,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899989797] [2022-10-16 11:08:44,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:44,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 11:08:44,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:44,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 11:08:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1807, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 11:08:44,146 INFO L87 Difference]: Start difference. First operand 1233 states and 1381 transitions. Second operand has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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 11:08:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:46,050 INFO L93 Difference]: Finished difference Result 2976 states and 3283 transitions. [2022-10-16 11:08:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-10-16 11:08:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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 70 [2022-10-16 11:08:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:46,059 INFO L225 Difference]: With dead ends: 2976 [2022-10-16 11:08:46,059 INFO L226 Difference]: Without dead ends: 2791 [2022-10-16 11:08:46,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 98 SyntacticMatches, 25 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3469 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1217, Invalid=8289, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 11:08:46,061 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 690 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:46,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 591 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:08:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-10-16 11:08:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1347. [2022-10-16 11:08:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.121189591078067) internal successors, (1508), 1346 states have internal predecessors, (1508), 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 11:08:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1508 transitions. [2022-10-16 11:08:46,351 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1508 transitions. Word has length 70 [2022-10-16 11:08:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:46,352 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 1508 transitions. [2022-10-16 11:08:46,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.608695652173913) internal successors, (120), 46 states have internal predecessors, (120), 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 11:08:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1508 transitions. [2022-10-16 11:08:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 11:08:46,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:46,355 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:46,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:46,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:46,565 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2125330511, now seen corresponding path program 12 times [2022-10-16 11:08:46,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066634151] [2022-10-16 11:08:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:46,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:47,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:47,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066634151] [2022-10-16 11:08:47,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066634151] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333335034] [2022-10-16 11:08:47,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:08:47,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:47,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:47,902 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 11:08:48,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-10-16 11:08:48,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:48,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 11:08:48,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:48,545 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 15 treesize of output 11 [2022-10-16 11:08:50,502 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:08:50,503 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 23 treesize of output 10 [2022-10-16 11:08:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:50,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:52,910 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 18 treesize of output 16 [2022-10-16 11:08:52,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-10-16 11:08:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 90 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:53,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333335034] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:53,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:53,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 33] total 81 [2022-10-16 11:08:53,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783304829] [2022-10-16 11:08:53,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:53,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-10-16 11:08:53,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-10-16 11:08:53,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=6218, Unknown=0, NotChecked=0, Total=6642 [2022-10-16 11:08:53,422 INFO L87 Difference]: Start difference. First operand 1347 states and 1508 transitions. Second operand has 82 states, 81 states have (on average 2.345679012345679) internal successors, (190), 82 states have internal predecessors, (190), 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 11:08:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:58,976 INFO L93 Difference]: Finished difference Result 2783 states and 3150 transitions. [2022-10-16 11:08:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-10-16 11:08:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.345679012345679) internal successors, (190), 82 states have internal predecessors, (190), 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 74 [2022-10-16 11:08:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:58,994 INFO L225 Difference]: With dead ends: 2783 [2022-10-16 11:08:58,994 INFO L226 Difference]: Without dead ends: 2782 [2022-10-16 11:08:58,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 90 SyntacticMatches, 13 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3958 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1060, Invalid=18400, Unknown=0, NotChecked=0, Total=19460 [2022-10-16 11:08:58,998 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 97 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 617 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:59,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1080 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1257 Invalid, 0 Unknown, 617 Unchecked, 0.6s Time] [2022-10-16 11:08:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2022-10-16 11:08:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1826. [2022-10-16 11:08:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1824 states have (on average 1.1277412280701755) internal successors, (2057), 1825 states have internal predecessors, (2057), 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 11:08:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2057 transitions. [2022-10-16 11:08:59,431 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2057 transitions. Word has length 74 [2022-10-16 11:08:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:59,432 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 2057 transitions. [2022-10-16 11:08:59,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.345679012345679) internal successors, (190), 82 states have internal predecessors, (190), 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 11:08:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2057 transitions. [2022-10-16 11:08:59,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 11:08:59,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:59,435 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:59,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:59,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-10-16 11:08:59,651 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:08:59,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:59,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1178202789, now seen corresponding path program 3 times [2022-10-16 11:08:59,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532985328] [2022-10-16 11:08:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:09:00,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532985328] [2022-10-16 11:09:00,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532985328] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102611919] [2022-10-16 11:09:00,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:09:00,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:00,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:00,136 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:00,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 11:09:00,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 11:09:00,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:00,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:09:00,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:09:00,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:09:01,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102611919] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:01,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:01,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-16 11:09:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38400972] [2022-10-16 11:09:01,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 11:09:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 11:09:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:09:01,020 INFO L87 Difference]: Start difference. First operand 1826 states and 2057 transitions. Second operand has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 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 11:09:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:09:02,276 INFO L93 Difference]: Finished difference Result 3820 states and 4436 transitions. [2022-10-16 11:09:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 11:09:02,278 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 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 76 [2022-10-16 11:09:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:09:02,295 INFO L225 Difference]: With dead ends: 3820 [2022-10-16 11:09:02,295 INFO L226 Difference]: Without dead ends: 3819 [2022-10-16 11:09:02,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 11:09:02,298 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 661 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:09:02,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 316 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:09:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-10-16 11:09:03,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3782. [2022-10-16 11:09:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3780 states have (on average 1.121957671957672) internal successors, (4241), 3781 states have internal predecessors, (4241), 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 11:09:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 4241 transitions. [2022-10-16 11:09:03,092 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 4241 transitions. Word has length 76 [2022-10-16 11:09:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:09:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 3782 states and 4241 transitions. [2022-10-16 11:09:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 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 11:09:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 4241 transitions. [2022-10-16 11:09:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 11:09:03,096 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:09:03,096 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:09:03,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-10-16 11:09:03,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:03,310 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:09:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:09:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2079329909, now seen corresponding path program 13 times [2022-10-16 11:09:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:09:03,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982412253] [2022-10-16 11:09:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:09:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:09:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:05,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:05,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982412253] [2022-10-16 11:09:05,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982412253] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:05,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744192047] [2022-10-16 11:09:05,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 11:09:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:05,013 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:05,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 11:09:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:05,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-16 11:09:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:05,655 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 15 treesize of output 11 [2022-10-16 11:09:05,857 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 11:09:05,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-10-16 11:09:06,900 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 19 treesize of output 7 [2022-10-16 11:09:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:06,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:51,027 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_610 Int) (|v_ULTIMATE.start_main_~k~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~k~0#1_99| (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~numbers~0#1.base|) (+ |c_ULTIMATE.start_main_~numbers~0#1.offset| (* 4 |v_ULTIMATE.start_main_~k~0#1_99|)) v_ArrVal_610) (+ |c_ULTIMATE.start_main_~numbers~0#1.offset| 24)) 2147483649))) is different from false [2022-10-16 11:09:51,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-10-16 11:09:51,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-10-16 11:09:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 217 refuted. 4 times theorem prover too weak. 0 trivial. 7 not checked. [2022-10-16 11:09:51,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744192047] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:51,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:51,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 81 [2022-10-16 11:09:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26727559] [2022-10-16 11:09:51,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:51,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-10-16 11:09:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-10-16 11:09:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=6227, Unknown=22, NotChecked=158, Total=6642 [2022-10-16 11:09:51,140 INFO L87 Difference]: Start difference. First operand 3782 states and 4241 transitions. Second operand has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 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 11:09:54,807 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~numbers~0#1.base|))) (and (<= 6 |c_ULTIMATE.start_main_~k~0#1|) (forall ((v_ArrVal_610 Int) (|v_ULTIMATE.start_main_~k~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~k~0#1_99| (+ |c_ULTIMATE.start_main_~k~0#1| 1)) (< (select (store .cse0 (+ |c_ULTIMATE.start_main_~numbers~0#1.offset| (* 4 |v_ULTIMATE.start_main_~k~0#1_99|)) v_ArrVal_610) (+ |c_ULTIMATE.start_main_~numbers~0#1.offset| 24)) 2147483649))) (<= (select .cse0 (+ |c_ULTIMATE.start_main_~numbers~0#1.offset| (* 4 |c_ULTIMATE.start_main_~k~0#1|))) 2147483647) (= |c_ULTIMATE.start_main_~numbers~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~k~0#1| 6))) is different from false [2022-10-16 11:10:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:06,641 INFO L93 Difference]: Finished difference Result 10511 states and 11667 transitions. [2022-10-16 11:10:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-16 11:10:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 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 78 [2022-10-16 11:10:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:06,664 INFO L225 Difference]: With dead ends: 10511 [2022-10-16 11:10:06,665 INFO L226 Difference]: Without dead ends: 10510 [2022-10-16 11:10:06,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4685 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=1129, Invalid=25588, Unknown=23, NotChecked=650, Total=27390 [2022-10-16 11:10:06,671 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 536 mSDsluCounter, 4416 mSDsCounter, 0 mSdLazyCounter, 9739 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 4530 SdHoareTripleChecker+Invalid, 10350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 9739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 490 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:06,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 4530 Invalid, 10350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 9739 Invalid, 0 Unknown, 490 Unchecked, 5.2s Time] [2022-10-16 11:10:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10510 states. [2022-10-16 11:10:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10510 to 3048. [2022-10-16 11:10:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3046 states have (on average 1.1152330925804335) internal successors, (3397), 3047 states have internal predecessors, (3397), 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 11:10:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 3397 transitions. [2022-10-16 11:10:07,411 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 3397 transitions. Word has length 78 [2022-10-16 11:10:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 3397 transitions. [2022-10-16 11:10:07,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 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 11:10:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 3397 transitions. [2022-10-16 11:10:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 11:10:07,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:07,415 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:07,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 11:10:07,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:07,624 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:10:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:07,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1789059050, now seen corresponding path program 14 times [2022-10-16 11:10:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:07,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845547468] [2022-10-16 11:10:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:07,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:09,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845547468] [2022-10-16 11:10:09,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845547468] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734291427] [2022-10-16 11:10:09,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:10:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:09,388 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:09,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 11:10:09,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:10:09,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 11:10:09,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:10,140 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 15 treesize of output 11 [2022-10-16 11:10:12,621 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:10:12,622 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 23 treesize of output 10 [2022-10-16 11:10:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 133 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:12,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:10:15,666 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 18 treesize of output 16 [2022-10-16 11:10:15,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-10-16 11:10:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 126 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734291427] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:10:16,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:10:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 37] total 91 [2022-10-16 11:10:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228832266] [2022-10-16 11:10:16,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:10:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-10-16 11:10:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:10:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-10-16 11:10:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=7854, Unknown=0, NotChecked=0, Total=8372 [2022-10-16 11:10:16,313 INFO L87 Difference]: Start difference. First operand 3048 states and 3397 transitions. Second operand has 92 states, 91 states have (on average 2.3736263736263736) internal successors, (216), 92 states have internal predecessors, (216), 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 11:10:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:23,258 INFO L93 Difference]: Finished difference Result 5884 states and 6649 transitions. [2022-10-16 11:10:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-10-16 11:10:23,258 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.3736263736263736) internal successors, (216), 92 states have internal predecessors, (216), 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 84 [2022-10-16 11:10:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:23,268 INFO L225 Difference]: With dead ends: 5884 [2022-10-16 11:10:23,268 INFO L226 Difference]: Without dead ends: 5883 [2022-10-16 11:10:23,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 103 SyntacticMatches, 15 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4582 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1281, Invalid=21671, Unknown=0, NotChecked=0, Total=22952 [2022-10-16 11:10:23,273 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 95 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2098 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1343 Invalid, 3493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1379 Invalid, 0 Unknown, 2098 Unchecked, 0.7s Time] [2022-10-16 11:10:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2022-10-16 11:10:24,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 3840. [2022-10-16 11:10:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3840 states, 3838 states have (on average 1.122459614382491) internal successors, (4308), 3839 states have internal predecessors, (4308), 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 11:10:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3840 states to 3840 states and 4308 transitions. [2022-10-16 11:10:24,237 INFO L78 Accepts]: Start accepts. Automaton has 3840 states and 4308 transitions. Word has length 84 [2022-10-16 11:10:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:24,237 INFO L495 AbstractCegarLoop]: Abstraction has 3840 states and 4308 transitions. [2022-10-16 11:10:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.3736263736263736) internal successors, (216), 92 states have internal predecessors, (216), 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 11:10:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3840 states and 4308 transitions. [2022-10-16 11:10:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-16 11:10:24,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:24,241 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:24,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-10-16 11:10:24,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:24,456 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:10:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash 88070653, now seen corresponding path program 3 times [2022-10-16 11:10:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398444773] [2022-10-16 11:10:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 123 proven. 130 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:10:25,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398444773] [2022-10-16 11:10:25,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398444773] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839993791] [2022-10-16 11:10:25,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:10:25,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:25,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:25,189 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:25,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 11:10:25,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-10-16 11:10:25,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:25,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-16 11:10:25,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 162 proven. 91 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:10:26,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:10:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 162 proven. 91 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:10:26,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839993791] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:10:26,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:10:26,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 52 [2022-10-16 11:10:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587135189] [2022-10-16 11:10:26,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:10:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-10-16 11:10:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:10:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-10-16 11:10:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2321, Unknown=0, NotChecked=0, Total=2652 [2022-10-16 11:10:26,985 INFO L87 Difference]: Start difference. First operand 3840 states and 4308 transitions. Second operand has 52 states, 52 states have (on average 2.8076923076923075) internal successors, (146), 52 states have internal predecessors, (146), 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 11:10:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:30,665 INFO L93 Difference]: Finished difference Result 8716 states and 9629 transitions. [2022-10-16 11:10:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-10-16 11:10:30,666 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.8076923076923075) internal successors, (146), 52 states have internal predecessors, (146), 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 86 [2022-10-16 11:10:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:30,681 INFO L225 Difference]: With dead ends: 8716 [2022-10-16 11:10:30,682 INFO L226 Difference]: Without dead ends: 8327 [2022-10-16 11:10:30,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 124 SyntacticMatches, 29 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5225 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1751, Invalid=12291, Unknown=0, NotChecked=0, Total=14042 [2022-10-16 11:10:30,687 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 912 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:30,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 686 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 11:10:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8327 states. [2022-10-16 11:10:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8327 to 4036. [2022-10-16 11:10:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4034 states have (on average 1.12097174020823) internal successors, (4522), 4035 states have internal predecessors, (4522), 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 11:10:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 4522 transitions. [2022-10-16 11:10:31,666 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 4522 transitions. Word has length 86 [2022-10-16 11:10:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 4522 transitions. [2022-10-16 11:10:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.8076923076923075) internal successors, (146), 52 states have internal predecessors, (146), 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 11:10:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 4522 transitions. [2022-10-16 11:10:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-16 11:10:31,670 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:31,671 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:31,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-10-16 11:10:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-10-16 11:10:31,885 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 11:10:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:31,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1828044370, now seen corresponding path program 15 times [2022-10-16 11:10:31,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:31,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117411546] [2022-10-16 11:10:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:31,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:33,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117411546] [2022-10-16 11:10:33,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117411546] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086792104] [2022-10-16 11:10:33,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:10:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:33,647 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 11:10:33,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-10-16 11:10:33,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:33,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 79 conjunts are in the unsatisfiable core [2022-10-16 11:10:33,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:34,683 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 15 treesize of output 11 [2022-10-16 11:10:34,901 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 11:10:34,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-10-16 11:10:36,281 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 19 treesize of output 7 [2022-10-16 11:10:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:36,284 INFO L328 TraceCheckSpWp]: Computing backward predicates...