/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/termination-nla/cohencu3-both-t.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:17:46,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:17:46,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:17:46,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:17:46,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:17:46,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:17:46,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:17:46,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:17:46,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:17:46,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:17:46,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:17:46,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:17:46,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:17:46,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:17:46,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:17:46,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:17:46,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:17:46,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:17:46,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:17:46,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:17:46,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:17:46,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:17:46,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:17:46,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:17:46,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:17:46,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:17:46,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:17:46,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:17:46,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:17:46,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:17:46,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:17:46,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:17:46,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:17:46,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:17:46,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:17:46,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:17:46,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:17:46,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:17:46,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:17:46,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:17:46,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:17:46,970 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 17:17:47,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:17:47,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:17:47,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:17:47,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:17:47,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:17:47,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:17:47,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:17:47,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:17:47,008 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:17:47,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:17:47,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:17:47,009 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:17:47,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:17:47,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:17:47,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:17:47,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:17:47,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:17:47,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:17:47,011 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:17:47,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:17:47,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:17:47,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:17:47,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:17:47,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:17:47,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:17:47,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:17:47,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:17:47,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:17:47,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:17:47,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:17:47,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:17:47,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:17:47,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:17:47,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:17:47,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:17:47,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:17:47,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:17:47,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:17:47,425 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:17:47,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/cohencu3-both-t.c [2022-10-16 17:17:47,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b04c6312/166dd0703514482bb8c855107167397f/FLAGf4a050335 [2022-10-16 17:17:48,192 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:17:48,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/cohencu3-both-t.c [2022-10-16 17:17:48,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b04c6312/166dd0703514482bb8c855107167397f/FLAGf4a050335 [2022-10-16 17:17:48,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b04c6312/166dd0703514482bb8c855107167397f [2022-10-16 17:17:48,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:17:48,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:17:48,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:17:48,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:17:48,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:17:48,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5b3f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48, skipping insertion in model container [2022-10-16 17:17:48,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:17:48,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:17:48,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:17:48,775 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:17:48,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:17:48,808 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:17:48,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48 WrapperNode [2022-10-16 17:17:48,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:17:48,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:17:48,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:17:48,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:17:48,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,848 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2022-10-16 17:17:48,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:17:48,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:17:48,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:17:48,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:17:48,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:17:48,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:17:48,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:17:48,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:17:48,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (1/1) ... [2022-10-16 17:17:48,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:17:48,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:48,915 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 17:17:48,942 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 17:17:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:17:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:17:49,076 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:17:49,079 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:17:50,109 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:17:50,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:17:50,117 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:17:50,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:17:50 BoogieIcfgContainer [2022-10-16 17:17:50,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:17:50,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:17:50,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:17:50,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:17:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:17:48" (1/3) ... [2022-10-16 17:17:50,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b332c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:17:50, skipping insertion in model container [2022-10-16 17:17:50,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:17:48" (2/3) ... [2022-10-16 17:17:50,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b332c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:17:50, skipping insertion in model container [2022-10-16 17:17:50,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:17:50" (3/3) ... [2022-10-16 17:17:50,130 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu3-both-t.c [2022-10-16 17:17:50,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:17:50,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 17:17:50,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:17:50,242 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;@38a4a70c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:17:50,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 17:17:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:17:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-16 17:17:50,270 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:50,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-16 17:17:50,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-10-16 17:17:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132428496] [2022-10-16 17:17:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:50,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:50,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:50,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321924096] [2022-10-16 17:17:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:50,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:50,386 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 17:17:50,395 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 17:17:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:50,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:50,501 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 17:17:50,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132428496] [2022-10-16 17:17:50,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321924096] [2022-10-16 17:17:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321924096] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948559969] [2022-10-16 17:17:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:50,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:50,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:50,553 INFO L87 Difference]: Start difference. First operand has 31 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 17:17:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:50,630 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2022-10-16 17:17:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-16 17:17:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:50,643 INFO L225 Difference]: With dead ends: 51 [2022-10-16 17:17:50,643 INFO L226 Difference]: Without dead ends: 33 [2022-10-16 17:17:50,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:50,652 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:50,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:17:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-16 17:17:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-10-16 17:17:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.5) internal successors, (33), 32 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 17:17:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-10-16 17:17:50,709 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 3 [2022-10-16 17:17:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:50,710 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-10-16 17:17:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 17:17:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-10-16 17:17:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 17:17:50,711 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:50,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:50,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:17:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 17:17:50,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:50,928 INFO L85 PathProgramCache]: Analyzing trace with hash 582856074, now seen corresponding path program 1 times [2022-10-16 17:17:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:50,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840787363] [2022-10-16 17:17:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:50,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:50,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758789019] [2022-10-16 17:17:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:50,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:50,946 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 17:17:50,955 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 17:17:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:51,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:51,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:51,155 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 17:17:51,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:51,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840787363] [2022-10-16 17:17:51,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:51,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758789019] [2022-10-16 17:17:51,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758789019] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:51,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:51,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48104496] [2022-10-16 17:17:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:51,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:51,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,164 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 17:17:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:51,209 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-10-16 17:17:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:51,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 17:17:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:51,211 INFO L225 Difference]: With dead ends: 37 [2022-10-16 17:17:51,211 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 17:17:51,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,218 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:51,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 17:17:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-10-16 17:17:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 33 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 17:17:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-10-16 17:17:51,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 10 [2022-10-16 17:17:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-10-16 17:17:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 17:17:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-10-16 17:17:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 17:17:51,238 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:51,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:51,268 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 17:17:51,439 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,SelfDestructingSolverStorable1 [2022-10-16 17:17:51,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 888669167, now seen corresponding path program 1 times [2022-10-16 17:17:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:51,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296798649] [2022-10-16 17:17:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:51,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:51,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558305652] [2022-10-16 17:17:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:51,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:51,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:51,456 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 17:17:51,460 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 17:17:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:51,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:51,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:51,575 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 17:17:51,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:51,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:51,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296798649] [2022-10-16 17:17:51,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:51,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558305652] [2022-10-16 17:17:51,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558305652] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:51,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:51,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063970658] [2022-10-16 17:17:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:51,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:51,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,581 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 17:17:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:51,610 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-10-16 17:17:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 17:17:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:51,612 INFO L225 Difference]: With dead ends: 40 [2022-10-16 17:17:51,612 INFO L226 Difference]: Without dead ends: 39 [2022-10-16 17:17:51,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,614 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:51,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-16 17:17:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-10-16 17:17:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 34 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 17:17:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-10-16 17:17:51,623 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 11 [2022-10-16 17:17:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:51,624 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-10-16 17:17:51,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 17:17:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-10-16 17:17:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 17:17:51,625 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:51,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:51,663 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 17:17:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:51,841 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:51,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1778940460, now seen corresponding path program 1 times [2022-10-16 17:17:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:51,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122889888] [2022-10-16 17:17:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:51,853 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:51,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609410638] [2022-10-16 17:17:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:51,856 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 17:17:51,857 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 17:17:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:51,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:51,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:51,956 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 17:17:51,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:51,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122889888] [2022-10-16 17:17:51,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:51,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609410638] [2022-10-16 17:17:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609410638] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:51,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:51,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:51,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072755716] [2022-10-16 17:17:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:51,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:51,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,961 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 17:17:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:51,991 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-10-16 17:17:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 17:17:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:51,993 INFO L225 Difference]: With dead ends: 39 [2022-10-16 17:17:51,993 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 17:17:51,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:51,995 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:51,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 17:17:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-10-16 17:17:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.44) internal successors, (36), 35 states have internal predecessors, (36), 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 17:17:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-10-16 17:17:52,003 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 12 [2022-10-16 17:17:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:52,004 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-10-16 17:17:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 17:17:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-10-16 17:17:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 17:17:52,005 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:52,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:52,043 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 17:17:52,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:52,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash -687420527, now seen corresponding path program 1 times [2022-10-16 17:17:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024699028] [2022-10-16 17:17:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:52,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:52,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:52,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105400594] [2022-10-16 17:17:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:52,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:52,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:52,236 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 17:17:52,239 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 17:17:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:52,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:52,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:52,394 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 17:17:52,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:52,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024699028] [2022-10-16 17:17:52,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:52,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105400594] [2022-10-16 17:17:52,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105400594] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:52,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:52,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102888065] [2022-10-16 17:17:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:52,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:52,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:52,398 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 17:17:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:52,419 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-10-16 17:17:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:52,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-10-16 17:17:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:52,421 INFO L225 Difference]: With dead ends: 36 [2022-10-16 17:17:52,421 INFO L226 Difference]: Without dead ends: 34 [2022-10-16 17:17:52,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:52,424 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:52,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-16 17:17:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-10-16 17:17:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.36) internal successors, (34), 33 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 17:17:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-10-16 17:17:52,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 13 [2022-10-16 17:17:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:52,432 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-10-16 17:17:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 17:17:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-10-16 17:17:52,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 17:17:52,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:52,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:52,462 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 17:17:52,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:52,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 164800206, now seen corresponding path program 1 times [2022-10-16 17:17:52,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:52,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671634010] [2022-10-16 17:17:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:52,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:52,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:52,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991893438] [2022-10-16 17:17:52,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:52,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:52,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:52,664 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 17:17:52,684 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 17:17:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:52,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 17:17:52,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:52,744 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 17:17:52,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:52,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671634010] [2022-10-16 17:17:52,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:52,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991893438] [2022-10-16 17:17:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991893438] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:52,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:52,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:17:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401514042] [2022-10-16 17:17:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:52,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:17:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:17:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:52,748 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:17:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:52,765 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-10-16 17:17:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:17:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 17:17:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:52,766 INFO L225 Difference]: With dead ends: 38 [2022-10-16 17:17:52,767 INFO L226 Difference]: Without dead ends: 37 [2022-10-16 17:17:52,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:17:52,769 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:52,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-10-16 17:17:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-10-16 17:17:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 35 states have internal predecessors, (36), 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 17:17:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-10-16 17:17:52,776 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 14 [2022-10-16 17:17:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:52,777 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-10-16 17:17:52,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:17:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-10-16 17:17:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 17:17:52,778 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:52,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:52,817 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 17:17:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:52,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:52,996 INFO L85 PathProgramCache]: Analyzing trace with hash -540789933, now seen corresponding path program 1 times [2022-10-16 17:17:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:52,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420061489] [2022-10-16 17:17:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:52,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:53,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:53,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659471520] [2022-10-16 17:17:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:53,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:53,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:53,009 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 17:17:53,021 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 17:17:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:53,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:17:53,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:53,137 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 17:17:53,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:53,207 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 17:17:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420061489] [2022-10-16 17:17:53,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659471520] [2022-10-16 17:17:53,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659471520] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:53,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:53,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-16 17:17:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641114101] [2022-10-16 17:17:53,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:17:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:17:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:17:53,211 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 17:17:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:53,296 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2022-10-16 17:17:53,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:17:53,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 17:17:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:53,297 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:17:53,298 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 17:17:53,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:17:53,299 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 50 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:53,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:17:53,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 17:17:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2022-10-16 17:17:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.1875) internal successors, (38), 37 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 17:17:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-10-16 17:17:53,308 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 16 [2022-10-16 17:17:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:53,309 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-10-16 17:17:53,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 17:17:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-10-16 17:17:53,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:17:53,310 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:53,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:53,353 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 17:17:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:53,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1277830149, now seen corresponding path program 1 times [2022-10-16 17:17:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306316034] [2022-10-16 17:17:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:53,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:53,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:53,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097708796] [2022-10-16 17:17:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:53,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:53,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:53,549 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 17:17:53,557 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 17:17:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:17:53,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:53,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:53,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306316034] [2022-10-16 17:17:53,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097708796] [2022-10-16 17:17:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097708796] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:53,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:17:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450420355] [2022-10-16 17:17:53,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:17:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:17:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:17:53,823 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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 17:17:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:53,894 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-10-16 17:17:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:17:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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 17:17:53,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:53,896 INFO L225 Difference]: With dead ends: 48 [2022-10-16 17:17:53,896 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 17:17:53,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:17:53,898 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:53,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 69 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 17:17:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-10-16 17:17:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 41 states have internal predecessors, (42), 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 17:17:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-10-16 17:17:53,905 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 23 [2022-10-16 17:17:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:53,905 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-10-16 17:17:53,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 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 17:17:53,906 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-10-16 17:17:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:17:53,907 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:53,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:53,949 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 17:17:54,122 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,SelfDestructingSolverStorable7 [2022-10-16 17:17:54,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -958028898, now seen corresponding path program 1 times [2022-10-16 17:17:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:54,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957944645] [2022-10-16 17:17:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:54,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:54,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:54,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528925287] [2022-10-16 17:17:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:54,136 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 17:17:54,143 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 17:17:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:54,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:17:54,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:54,323 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 17:17:54,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:54,407 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 17:17:54,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:54,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957944645] [2022-10-16 17:17:54,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:54,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528925287] [2022-10-16 17:17:54,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528925287] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:54,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:54,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:17:54,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34390321] [2022-10-16 17:17:54,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:17:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:17:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:17:54,411 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 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 17:17:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:54,489 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-10-16 17:17:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:17:54,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 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 17:17:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:54,492 INFO L225 Difference]: With dead ends: 42 [2022-10-16 17:17:54,492 INFO L226 Difference]: Without dead ends: 41 [2022-10-16 17:17:54,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:17:54,496 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:54,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-16 17:17:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-16 17:17:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 40 states have internal predecessors, (41), 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 17:17:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-10-16 17:17:54,509 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 24 [2022-10-16 17:17:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:54,510 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-10-16 17:17:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 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 17:17:54,510 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-10-16 17:17:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:17:54,511 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:54,511 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:17:54,555 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 17:17:54,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:54,726 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash 365875293, now seen corresponding path program 1 times [2022-10-16 17:17:54,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:54,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292241621] [2022-10-16 17:17:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:54,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:54,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:54,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633307038] [2022-10-16 17:17:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:54,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:54,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:54,741 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 17:17:54,759 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 17:17:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:54,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:17:54,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:54,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292241621] [2022-10-16 17:17:54,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633307038] [2022-10-16 17:17:54,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633307038] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:54,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:54,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:17:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191020214] [2022-10-16 17:17:54,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:54,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:17:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:17:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:17:54,971 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 17:17:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:55,068 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2022-10-16 17:17:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:17:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 17:17:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:55,069 INFO L225 Difference]: With dead ends: 61 [2022-10-16 17:17:55,069 INFO L226 Difference]: Without dead ends: 60 [2022-10-16 17:17:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:17:55,071 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 56 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:17:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-16 17:17:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-10-16 17:17:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 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 17:17:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-10-16 17:17:55,079 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 25 [2022-10-16 17:17:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:55,079 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-10-16 17:17:55,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 17:17:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-10-16 17:17:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 17:17:55,081 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:55,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:17:55,117 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 17:17:55,294 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,SelfDestructingSolverStorable9 [2022-10-16 17:17:55,295 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -581159745, now seen corresponding path program 1 times [2022-10-16 17:17:55,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:55,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858755094] [2022-10-16 17:17:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:55,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:55,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:55,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601901120] [2022-10-16 17:17:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:55,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:55,308 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 17:17:55,312 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 17:17:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:55,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:17:55,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:55,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:55,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:55,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858755094] [2022-10-16 17:17:55,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:55,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601901120] [2022-10-16 17:17:55,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601901120] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:55,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:55,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-16 17:17:55,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227548858] [2022-10-16 17:17:55,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:55,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:17:55,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:55,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:17:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:17:55,446 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 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 17:17:55,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:55,488 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2022-10-16 17:17:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:17:55,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 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) Word has length 27 [2022-10-16 17:17:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:55,490 INFO L225 Difference]: With dead ends: 79 [2022-10-16 17:17:55,490 INFO L226 Difference]: Without dead ends: 78 [2022-10-16 17:17:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:17:55,491 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 62 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-16 17:17:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2022-10-16 17:17:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 70 states have internal predecessors, (78), 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 17:17:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2022-10-16 17:17:55,500 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 27 [2022-10-16 17:17:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:55,500 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2022-10-16 17:17:55,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 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 17:17:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2022-10-16 17:17:55,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 17:17:55,502 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:55,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-16 17:17:55,540 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 17:17:55,715 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,SelfDestructingSolverStorable10 [2022-10-16 17:17:55,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:55,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1228677882, now seen corresponding path program 1 times [2022-10-16 17:17:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:55,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21802834] [2022-10-16 17:17:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:55,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:55,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069894769] [2022-10-16 17:17:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:55,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:55,727 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 17:17:55,729 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 17:17:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:55,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:17:55,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:55,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21802834] [2022-10-16 17:17:56,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069894769] [2022-10-16 17:17:56,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069894769] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:56,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:56,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:17:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898516572] [2022-10-16 17:17:56,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:17:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:17:56,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:17:56,229 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 17:17:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:56,283 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2022-10-16 17:17:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:17:56,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 31 [2022-10-16 17:17:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:56,285 INFO L225 Difference]: With dead ends: 80 [2022-10-16 17:17:56,285 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 17:17:56,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:17:56,286 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:56,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 54 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-10-16 17:17:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 17:17:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-10-16 17:17:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 74 states have internal predecessors, (80), 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 17:17:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2022-10-16 17:17:56,295 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2022-10-16 17:17:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:56,295 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2022-10-16 17:17:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 17:17:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2022-10-16 17:17:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 17:17:56,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:56,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-16 17:17:56,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:17:56,511 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,SelfDestructingSolverStorable11 [2022-10-16 17:17:56,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash 565691366, now seen corresponding path program 1 times [2022-10-16 17:17:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:56,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488044006] [2022-10-16 17:17:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:56,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:56,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:56,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554069570] [2022-10-16 17:17:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:56,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:56,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:56,524 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 17:17:56,527 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 17:17:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:17:56,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:17:56,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:56,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:17:56,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:56,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488044006] [2022-10-16 17:17:56,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554069570] [2022-10-16 17:17:56,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554069570] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:17:56,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:17:56,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:17:56,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950934497] [2022-10-16 17:17:56,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:17:56,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:17:56,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:17:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:17:56,613 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:17:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:56,653 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2022-10-16 17:17:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:17:56,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-10-16 17:17:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:56,655 INFO L225 Difference]: With dead ends: 75 [2022-10-16 17:17:56,655 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 17:17:56,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:17:56,657 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:56,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:17:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 17:17:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-10-16 17:17:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.1) internal successors, (77), 73 states have internal predecessors, (77), 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 17:17:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-10-16 17:17:56,670 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 32 [2022-10-16 17:17:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:56,671 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-10-16 17:17:56,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:17:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-10-16 17:17:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 17:17:56,676 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:56,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-10-16 17:17:56,712 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 17:17:56,891 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,SelfDestructingSolverStorable12 [2022-10-16 17:17:56,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash 920546602, now seen corresponding path program 2 times [2022-10-16 17:17:56,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651563009] [2022-10-16 17:17:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:56,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:56,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:56,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993069948] [2022-10-16 17:17:56,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:17:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:56,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:56,904 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 17:17:56,927 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 17:17:56,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:17:56,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:17:56,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:17:56,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:57,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651563009] [2022-10-16 17:17:57,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:57,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993069948] [2022-10-16 17:17:57,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993069948] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:57,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:57,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-16 17:17:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506820292] [2022-10-16 17:17:57,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:57,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 17:17:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 17:17:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:17:57,371 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 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 17:17:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:57,564 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2022-10-16 17:17:57,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:17:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 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) Word has length 36 [2022-10-16 17:17:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:57,566 INFO L225 Difference]: With dead ends: 75 [2022-10-16 17:17:57,566 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 17:17:57,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=204, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:17:57,567 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:57,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 108 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:17:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 17:17:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-10-16 17:17:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 73 states have internal predecessors, (75), 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 17:17:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2022-10-16 17:17:57,574 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 36 [2022-10-16 17:17:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:57,575 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2022-10-16 17:17:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.461538461538462) internal successors, (71), 14 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 17:17:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2022-10-16 17:17:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 17:17:57,576 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:57,576 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2022-10-16 17:17:57,620 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 17:17:57,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:57,777 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 224582845, now seen corresponding path program 2 times [2022-10-16 17:17:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:57,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137214435] [2022-10-16 17:17:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:57,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:57,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:57,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925607780] [2022-10-16 17:17:57,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:17:57,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:57,790 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 17:17:57,815 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 17:17:57,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:17:57,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:17:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:17:57,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:58,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:58,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:58,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137214435] [2022-10-16 17:17:58,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925607780] [2022-10-16 17:17:58,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925607780] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:58,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:58,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-10-16 17:17:58,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931227486] [2022-10-16 17:17:58,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:58,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:17:58,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:17:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:17:58,242 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 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 17:17:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:17:58,500 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2022-10-16 17:17:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:17:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 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 51 [2022-10-16 17:17:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:17:58,501 INFO L225 Difference]: With dead ends: 115 [2022-10-16 17:17:58,501 INFO L226 Difference]: Without dead ends: 114 [2022-10-16 17:17:58,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=293, Unknown=0, NotChecked=0, Total=506 [2022-10-16 17:17:58,503 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 106 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:17:58,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 126 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:17:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-16 17:17:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2022-10-16 17:17:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 103 states have (on average 1.1067961165048543) internal successors, (114), 106 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 17:17:58,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2022-10-16 17:17:58,518 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 51 [2022-10-16 17:17:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:17:58,518 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2022-10-16 17:17:58,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 16 states have internal predecessors, (101), 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 17:17:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2022-10-16 17:17:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-16 17:17:58,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:17:58,523 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-10-16 17:17:58,559 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 17:17:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:17:58,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:17:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:17:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1322720054, now seen corresponding path program 3 times [2022-10-16 17:17:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:17:58,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498204559] [2022-10-16 17:17:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:17:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:17:58,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:17:58,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796980979] [2022-10-16 17:17:58,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:17:58,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:17:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:17:58,753 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 17:17:58,769 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 17:17:58,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 17:17:58,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:17:58,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:17:58,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:17:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:59,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:17:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:17:59,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:17:59,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498204559] [2022-10-16 17:17:59,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:17:59,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796980979] [2022-10-16 17:17:59,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796980979] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:17:59,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:17:59,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-10-16 17:17:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428071650] [2022-10-16 17:17:59,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:17:59,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:17:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:17:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:17:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:17:59,686 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 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 17:18:00,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:00,317 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2022-10-16 17:18:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 17:18:00,318 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 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 62 [2022-10-16 17:18:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:00,319 INFO L225 Difference]: With dead ends: 125 [2022-10-16 17:18:00,319 INFO L226 Difference]: Without dead ends: 124 [2022-10-16 17:18:00,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 17:18:00,321 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 284 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:00,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 185 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:18:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-16 17:18:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2022-10-16 17:18:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.087719298245614) internal successors, (124), 117 states have internal predecessors, (124), 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 17:18:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2022-10-16 17:18:00,330 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 62 [2022-10-16 17:18:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:00,331 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2022-10-16 17:18:00,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 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 17:18:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2022-10-16 17:18:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 17:18:00,332 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:00,332 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-10-16 17:18:00,374 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 17:18:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:18:00,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:00,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1968193038, now seen corresponding path program 2 times [2022-10-16 17:18:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:00,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314900942] [2022-10-16 17:18:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:00,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:00,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726816067] [2022-10-16 17:18:00,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:18:00,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:00,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:00,561 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 17:18:00,584 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 17:18:00,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:18:00,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:00,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:18:00,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 72 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:00,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:01,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:01,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314900942] [2022-10-16 17:18:01,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:01,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726816067] [2022-10-16 17:18:01,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726816067] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:01,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:01,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-10-16 17:18:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109575375] [2022-10-16 17:18:01,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 17:18:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 17:18:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:18:01,057 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 20 states, 19 states have (on average 6.894736842105263) internal successors, (131), 20 states have internal predecessors, (131), 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 17:18:01,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:01,372 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2022-10-16 17:18:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:18:01,373 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.894736842105263) internal successors, (131), 20 states have internal predecessors, (131), 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 17:18:01,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:01,375 INFO L225 Difference]: With dead ends: 118 [2022-10-16 17:18:01,375 INFO L226 Difference]: Without dead ends: 117 [2022-10-16 17:18:01,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=639, Unknown=0, NotChecked=0, Total=992 [2022-10-16 17:18:01,377 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 132 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:01,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 199 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:18:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-10-16 17:18:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-10-16 17:18:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.0526315789473684) internal successors, (120), 116 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 17:18:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-10-16 17:18:01,387 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 66 [2022-10-16 17:18:01,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:01,388 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-10-16 17:18:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.894736842105263) internal successors, (131), 20 states have internal predecessors, (131), 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 17:18:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-10-16 17:18:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 17:18:01,389 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:01,389 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1] [2022-10-16 17:18:01,420 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 17:18:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:18:01,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1209751851, now seen corresponding path program 2 times [2022-10-16 17:18:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744275603] [2022-10-16 17:18:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:01,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:01,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228041155] [2022-10-16 17:18:01,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:18:01,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:01,617 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 17:18:01,623 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 17:18:01,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:18:01,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:01,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 17:18:01,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:01,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:02,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744275603] [2022-10-16 17:18:02,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:02,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228041155] [2022-10-16 17:18:02,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228041155] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:02,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-16 17:18:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557966393] [2022-10-16 17:18:02,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 17:18:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 17:18:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:18:02,537 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 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 17:18:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:02,604 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2022-10-16 17:18:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 17:18:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 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 17:18:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:02,606 INFO L225 Difference]: With dead ends: 157 [2022-10-16 17:18:02,607 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 17:18:02,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:18:02,608 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 103 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:02,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 95 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 128 Unchecked, 0.0s Time] [2022-10-16 17:18:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 17:18:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2022-10-16 17:18:02,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 148 states have (on average 1.054054054054054) internal successors, (156), 150 states have internal predecessors, (156), 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 17:18:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2022-10-16 17:18:02,622 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 70 [2022-10-16 17:18:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2022-10-16 17:18:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 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 17:18:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2022-10-16 17:18:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 17:18:02,623 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:02,624 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1] [2022-10-16 17:18:02,630 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 17:18:02,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 17:18:02,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:02,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:02,830 INFO L85 PathProgramCache]: Analyzing trace with hash 185519485, now seen corresponding path program 3 times [2022-10-16 17:18:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:02,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862645055] [2022-10-16 17:18:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:02,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:02,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441659515] [2022-10-16 17:18:02,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:18:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:02,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:02,847 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 17:18:02,870 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 17:18:02,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-16 17:18:02,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:02,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:18:02,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:03,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:04,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862645055] [2022-10-16 17:18:04,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:04,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441659515] [2022-10-16 17:18:04,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441659515] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:04,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:04,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2022-10-16 17:18:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947690416] [2022-10-16 17:18:04,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 17:18:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 17:18:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1721, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 17:18:04,526 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand has 44 states, 43 states have (on average 4.767441860465116) internal successors, (205), 44 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 17:18:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:07,668 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2022-10-16 17:18:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:18:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.767441860465116) internal successors, (205), 44 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) Word has length 103 [2022-10-16 17:18:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:07,669 INFO L225 Difference]: With dead ends: 151 [2022-10-16 17:18:07,669 INFO L226 Difference]: Without dead ends: 150 [2022-10-16 17:18:07,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1369, Invalid=4331, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 17:18:07,673 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 664 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:07,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 831 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:18:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-10-16 17:18:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-10-16 17:18:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.027027027027027) internal successors, (152), 149 states have internal predecessors, (152), 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 17:18:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2022-10-16 17:18:07,688 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 103 [2022-10-16 17:18:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2022-10-16 17:18:07,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.767441860465116) internal successors, (205), 44 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 17:18:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2022-10-16 17:18:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-16 17:18:07,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:07,690 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2022-10-16 17:18:07,721 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 17:18:07,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:07,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:07,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1524825098, now seen corresponding path program 4 times [2022-10-16 17:18:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:07,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422871810] [2022-10-16 17:18:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:07,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:07,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942926860] [2022-10-16 17:18:07,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:18:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:07,919 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 17:18:07,922 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 17:18:07,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:18:07,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:07,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 17:18:07,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:09,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:10,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:10,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422871810] [2022-10-16 17:18:10,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:10,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942926860] [2022-10-16 17:18:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942926860] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:10,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:10,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2022-10-16 17:18:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301384428] [2022-10-16 17:18:10,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:10,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-16 17:18:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-16 17:18:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=1637, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:18:10,693 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 50 states, 49 states have (on average 4.63265306122449) internal successors, (227), 50 states have internal predecessors, (227), 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 17:18:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:14,091 INFO L93 Difference]: Finished difference Result 226 states and 233 transitions. [2022-10-16 17:18:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 17:18:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.63265306122449) internal successors, (227), 50 states have internal predecessors, (227), 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 114 [2022-10-16 17:18:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:14,094 INFO L225 Difference]: With dead ends: 226 [2022-10-16 17:18:14,094 INFO L226 Difference]: Without dead ends: 225 [2022-10-16 17:18:14,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2512, Invalid=4460, Unknown=0, NotChecked=0, Total=6972 [2022-10-16 17:18:14,097 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 974 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:14,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 353 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:18:14,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-10-16 17:18:14,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 220. [2022-10-16 17:18:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.0321100917431192) internal successors, (225), 219 states have internal predecessors, (225), 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 17:18:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 225 transitions. [2022-10-16 17:18:14,117 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 225 transitions. Word has length 114 [2022-10-16 17:18:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:14,118 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 225 transitions. [2022-10-16 17:18:14,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.63265306122449) internal successors, (227), 50 states have internal predecessors, (227), 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 17:18:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 225 transitions. [2022-10-16 17:18:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-16 17:18:14,119 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:14,120 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1] [2022-10-16 17:18:14,145 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 17:18:14,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:14,332 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:14,333 INFO L85 PathProgramCache]: Analyzing trace with hash 317554101, now seen corresponding path program 3 times [2022-10-16 17:18:14,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:14,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13403300] [2022-10-16 17:18:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:14,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:14,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959575918] [2022-10-16 17:18:14,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:18:14,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:14,355 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 17:18:14,374 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 17:18:14,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-10-16 17:18:14,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:14,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:18:14,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:15,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:16,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13403300] [2022-10-16 17:18:16,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:16,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959575918] [2022-10-16 17:18:16,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959575918] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:16,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:16,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-10-16 17:18:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159544585] [2022-10-16 17:18:16,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:16,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:18:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:16,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:18:16,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:18:16,881 INFO L87 Difference]: Start difference. First operand 220 states and 225 transitions. Second operand has 26 states, 25 states have (on average 11.8) internal successors, (295), 26 states have internal predecessors, (295), 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 17:18:17,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:17,032 INFO L93 Difference]: Finished difference Result 313 states and 324 transitions. [2022-10-16 17:18:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-16 17:18:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 11.8) internal successors, (295), 26 states have internal predecessors, (295), 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 148 [2022-10-16 17:18:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:17,034 INFO L225 Difference]: With dead ends: 313 [2022-10-16 17:18:17,034 INFO L226 Difference]: Without dead ends: 312 [2022-10-16 17:18:17,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:18:17,035 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 216 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:17,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 168 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 309 Unchecked, 0.1s Time] [2022-10-16 17:18:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-10-16 17:18:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2022-10-16 17:18:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 304 states have (on average 1.0263157894736843) internal successors, (312), 305 states have internal predecessors, (312), 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 17:18:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 312 transitions. [2022-10-16 17:18:17,063 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 312 transitions. Word has length 148 [2022-10-16 17:18:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:17,064 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 312 transitions. [2022-10-16 17:18:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 11.8) internal successors, (295), 26 states have internal predecessors, (295), 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 17:18:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 312 transitions. [2022-10-16 17:18:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-10-16 17:18:17,067 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:17,067 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1] [2022-10-16 17:18:17,073 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 17:18:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:17,274 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash 964938378, now seen corresponding path program 5 times [2022-10-16 17:18:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242969034] [2022-10-16 17:18:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:17,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:17,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:17,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343111037] [2022-10-16 17:18:17,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:18:17,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:17,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:17,291 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 17:18:17,300 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 17:18:17,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-10-16 17:18:17,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 17:18:17,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 1688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:20,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:18:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 1688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:27,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242969034] [2022-10-16 17:18:27,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:27,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343111037] [2022-10-16 17:18:27,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343111037] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:18:27,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:18:27,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2022-10-16 17:18:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889991019] [2022-10-16 17:18:27,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:18:27,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-10-16 17:18:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-10-16 17:18:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3097, Invalid=6409, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 17:18:27,418 INFO L87 Difference]: Start difference. First operand 306 states and 312 transitions. Second operand has 98 states, 97 states have (on average 4.484536082474227) internal successors, (435), 98 states have internal predecessors, (435), 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 17:18:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:57,230 INFO L93 Difference]: Finished difference Result 438 states and 453 transitions. [2022-10-16 17:18:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-16 17:18:57,231 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 4.484536082474227) internal successors, (435), 98 states have internal predecessors, (435), 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 218 [2022-10-16 17:18:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:57,234 INFO L225 Difference]: With dead ends: 438 [2022-10-16 17:18:57,234 INFO L226 Difference]: Without dead ends: 437 [2022-10-16 17:18:57,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5464 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=10392, Invalid=19020, Unknown=0, NotChecked=0, Total=29412 [2022-10-16 17:18:57,244 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2226 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:57,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2226 Valid, 662 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 17:18:57,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-10-16 17:18:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 428. [2022-10-16 17:18:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 426 states have (on average 1.0258215962441315) internal successors, (437), 427 states have internal predecessors, (437), 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 17:18:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 437 transitions. [2022-10-16 17:18:57,305 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 437 transitions. Word has length 218 [2022-10-16 17:18:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:57,306 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 437 transitions. [2022-10-16 17:18:57,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 4.484536082474227) internal successors, (435), 98 states have internal predecessors, (435), 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 17:18:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 437 transitions. [2022-10-16 17:18:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-10-16 17:18:57,311 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:57,311 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1] [2022-10-16 17:18:57,318 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 17:18:57,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:57,512 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:18:57,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1669567349, now seen corresponding path program 4 times [2022-10-16 17:18:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:57,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829131708] [2022-10-16 17:18:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:57,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:57,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851620481] [2022-10-16 17:18:57,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:18:57,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:57,536 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 17:18:57,540 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 17:18:57,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:18:57,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:18:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 17:18:57,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3358 backedges. 0 proven. 3358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:18:58,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3358 backedges. 0 proven. 3358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:03,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:03,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829131708] [2022-10-16 17:19:03,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:03,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851620481] [2022-10-16 17:19:03,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851620481] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:03,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:03,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2022-10-16 17:19:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841625526] [2022-10-16 17:19:03,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-16 17:19:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-16 17:19:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:19:03,514 INFO L87 Difference]: Start difference. First operand 428 states and 437 transitions. Second operand has 50 states, 49 states have (on average 12.387755102040817) internal successors, (607), 50 states have internal predecessors, (607), 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 17:19:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:03,877 INFO L93 Difference]: Finished difference Result 633 states and 656 transitions. [2022-10-16 17:19:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:19:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 12.387755102040817) internal successors, (607), 50 states have internal predecessors, (607), 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 304 [2022-10-16 17:19:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:03,895 INFO L225 Difference]: With dead ends: 633 [2022-10-16 17:19:03,895 INFO L226 Difference]: Without dead ends: 632 [2022-10-16 17:19:03,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 17:19:03,896 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 357 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:03,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 321 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 683 Unchecked, 0.1s Time] [2022-10-16 17:19:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-10-16 17:19:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 618. [2022-10-16 17:19:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 616 states have (on average 1.025974025974026) internal successors, (632), 617 states have internal predecessors, (632), 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 17:19:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 632 transitions. [2022-10-16 17:19:03,951 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 632 transitions. Word has length 304 [2022-10-16 17:19:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:03,952 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 632 transitions. [2022-10-16 17:19:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 12.387755102040817) internal successors, (607), 50 states have internal predecessors, (607), 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 17:19:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 632 transitions. [2022-10-16 17:19:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-10-16 17:19:03,959 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:03,959 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1] [2022-10-16 17:19:03,968 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 17:19:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:04,164 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 17:19:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -197662838, now seen corresponding path program 6 times [2022-10-16 17:19:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:04,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277905306] [2022-10-16 17:19:04,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:04,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:04,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233359599] [2022-10-16 17:19:04,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:19:04,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:04,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:04,187 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 17:19:04,188 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 17:19:04,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-10-16 17:19:04,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:04,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 99 conjunts are in the unsatisfiable core [2022-10-16 17:19:04,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:19,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:20:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:20:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:20:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277905306] [2022-10-16 17:20:00,233 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:20:00,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233359599] [2022-10-16 17:20:00,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233359599] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:20:00,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:20:00,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 193 [2022-10-16 17:20:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225960889] [2022-10-16 17:20:00,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:20:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-10-16 17:20:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:20:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-10-16 17:20:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12081, Invalid=25361, Unknown=0, NotChecked=0, Total=37442 [2022-10-16 17:20:00,243 INFO L87 Difference]: Start difference. First operand 618 states and 632 transitions. Second operand has 194 states, 193 states have (on average 4.409326424870466) internal successors, (851), 194 states have internal predecessors, (851), 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)