/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/cohencu7-both-t.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:18:44,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:18:44,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:18:44,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:18:44,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:18:44,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:18:44,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:18:44,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:18:44,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:18:44,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:18:44,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:18:44,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:18:44,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:18:44,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:18:44,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:18:44,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:18:44,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:18:44,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:18:44,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:18:44,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:18:44,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:18:44,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:18:44,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:18:44,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:18:44,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 17:18:44,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 17:18:44,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 17:18:44,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 17:18:44,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 17:18:44,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 17:18:44,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 17:18:44,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 17:18:44,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 17:18:44,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 17:18:44,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 17:18:44,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 17:18:44,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 17:18:44,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 17:18:44,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:18:44,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:18:44,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:18:44,898 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 17:18:44,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:18:44,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:18:44,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:18:44,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:18:44,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:18:44,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:18:44,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:18:44,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:18:44,964 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:18:44,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:18:44,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:18:44,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:18:44,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:18:44,967 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:18:44,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:18:44,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:18:44,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:18:44,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:18:44,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:18:44,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:18:44,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:18:44,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:18:44,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:18:44,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:18:44,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:18:44,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:18:44,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:18:44,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:18:44,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:18:45,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:18:45,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:18:45,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:18:45,423 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:18:45,424 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:18:45,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/cohencu7-both-t.c [2022-10-16 17:18:45,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33592cc24/9476ce3654c14adfbb7c4b0e8f3fa82c/FLAG2765a1359 [2022-10-16 17:18:46,172 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:18:46,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/cohencu7-both-t.c [2022-10-16 17:18:46,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33592cc24/9476ce3654c14adfbb7c4b0e8f3fa82c/FLAG2765a1359 [2022-10-16 17:18:46,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33592cc24/9476ce3654c14adfbb7c4b0e8f3fa82c [2022-10-16 17:18:46,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:18:46,558 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:18:46,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:18:46,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:18:46,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:18:46,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7971f12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46, skipping insertion in model container [2022-10-16 17:18:46,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:18:46,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:18:46,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:18:46,750 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:18:46,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:18:46,785 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:18:46,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46 WrapperNode [2022-10-16 17:18:46,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:18:46,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:18:46,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:18:46,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:18:46,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,828 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-10-16 17:18:46,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:18:46,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:18:46,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:18:46,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:18:46,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:18:46,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:18:46,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:18:46,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:18:46,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (1/1) ... [2022-10-16 17:18:46,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:18:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:46,897 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 17:18:46,908 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 17:18:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:18:46,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:18:47,080 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:18:47,083 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:18:47,361 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:18:47,371 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:18:47,372 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:18:47,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:18:47 BoogieIcfgContainer [2022-10-16 17:18:47,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:18:47,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:18:47,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:18:47,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:18:47,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:18:46" (1/3) ... [2022-10-16 17:18:47,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac6bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:18:47, skipping insertion in model container [2022-10-16 17:18:47,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:18:46" (2/3) ... [2022-10-16 17:18:47,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac6bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:18:47, skipping insertion in model container [2022-10-16 17:18:47,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:18:47" (3/3) ... [2022-10-16 17:18:47,388 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu7-both-t.c [2022-10-16 17:18:47,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:18:47,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-16 17:18:47,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:18:47,545 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;@50cd3087, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:18:47,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-16 17:18:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 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 17:18:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 17:18:47,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:47,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 17:18:47,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash 925608, now seen corresponding path program 1 times [2022-10-16 17:18:47,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:47,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531477047] [2022-10-16 17:18:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:47,825 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 17:18:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:47,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531477047] [2022-10-16 17:18:47,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531477047] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:47,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:47,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521281599] [2022-10-16 17:18:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:47,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:47,874 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:47,940 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-10-16 17:18:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:47,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 17:18:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:47,954 INFO L225 Difference]: With dead ends: 86 [2022-10-16 17:18:47,955 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:18:47,958 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 17:18:47,963 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:47,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 71 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:18:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2022-10-16 17:18:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.775) internal successors, (71), 58 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 17:18:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-10-16 17:18:48,010 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 4 [2022-10-16 17:18:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:48,011 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-10-16 17:18:48,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-10-16 17:18:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 17:18:48,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:48,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 17:18:48,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:18:48,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:48,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash 28693891, now seen corresponding path program 1 times [2022-10-16 17:18:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:48,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949748389] [2022-10-16 17:18:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:48,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:48,065 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 17:18:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:48,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949748389] [2022-10-16 17:18:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949748389] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:48,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:48,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:48,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622711174] [2022-10-16 17:18:48,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:48,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:48,070 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:48,111 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-10-16 17:18:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-16 17:18:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:48,114 INFO L225 Difference]: With dead ends: 73 [2022-10-16 17:18:48,114 INFO L226 Difference]: Without dead ends: 71 [2022-10-16 17:18:48,115 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 17:18:48,117 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:48,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 66 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-16 17:18:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2022-10-16 17:18:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2022-10-16 17:18:48,128 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 5 [2022-10-16 17:18:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:48,129 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2022-10-16 17:18:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-10-16 17:18:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 17:18:48,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:48,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 17:18:48,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:18:48,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash 889510666, now seen corresponding path program 1 times [2022-10-16 17:18:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:48,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105986750] [2022-10-16 17:18:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:48,166 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 17:18:48,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:48,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105986750] [2022-10-16 17:18:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105986750] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:48,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:48,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266097536] [2022-10-16 17:18:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:48,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:48,171 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:56,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 8.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-16 17:18:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:56,983 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-10-16 17:18:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 17:18:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:56,985 INFO L225 Difference]: With dead ends: 60 [2022-10-16 17:18:56,985 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 17:18:56,986 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 17:18:56,988 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:56,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-10-16 17:18:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 17:18:56,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 17:18:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:18:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-10-16 17:18:56,999 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 6 [2022-10-16 17:18:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:56,999 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-10-16 17:18:56,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-10-16 17:18:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:18:57,000 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:57,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:18:57,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1805026917, now seen corresponding path program 1 times [2022-10-16 17:18:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:57,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935708194] [2022-10-16 17:18:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:57,038 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 17:18:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935708194] [2022-10-16 17:18:57,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935708194] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:57,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:57,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325564593] [2022-10-16 17:18:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:57,042 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:57,128 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-10-16 17:18:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:18:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:57,131 INFO L225 Difference]: With dead ends: 56 [2022-10-16 17:18:57,131 INFO L226 Difference]: Without dead ends: 53 [2022-10-16 17:18:57,131 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 17:18:57,133 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:57,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:18:57,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-16 17:18:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-10-16 17:18:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2022-10-16 17:18:57,143 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 7 [2022-10-16 17:18:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:57,143 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2022-10-16 17:18:57,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2022-10-16 17:18:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 17:18:57,144 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:57,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:57,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:18:57,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash 566387150, now seen corresponding path program 1 times [2022-10-16 17:18:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:57,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631877327] [2022-10-16 17:18:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:57,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:57,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536650305] [2022-10-16 17:18:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:57,163 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 17:18:57,190 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 17:18:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:57,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:18:57,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:57,304 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 17:18:57,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:57,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631877327] [2022-10-16 17:18:57,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:57,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536650305] [2022-10-16 17:18:57,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536650305] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:57,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:57,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248117650] [2022-10-16 17:18:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:57,309 INFO L87 Difference]: Start difference. First operand 53 states and 57 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 17:18:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:57,334 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2022-10-16 17:18:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:57,335 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 17:18:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:57,336 INFO L225 Difference]: With dead ends: 53 [2022-10-16 17:18:57,336 INFO L226 Difference]: Without dead ends: 51 [2022-10-16 17:18:57,336 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 17:18:57,338 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:57,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-16 17:18:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-10-16 17:18:57,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 50 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 17:18:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2022-10-16 17:18:57,348 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 10 [2022-10-16 17:18:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:57,348 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2022-10-16 17:18:57,348 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 17:18:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2022-10-16 17:18:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 17:18:57,349 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:57,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:57,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 17:18:57,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:57,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1799858991, now seen corresponding path program 1 times [2022-10-16 17:18:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:57,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489131346] [2022-10-16 17:18:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:57,592 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492986888] [2022-10-16 17:18:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:57,599 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 17:18:57,610 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 17:18:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 17:18:57,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:57,707 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 17:18:57,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:57,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489131346] [2022-10-16 17:18:57,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492986888] [2022-10-16 17:18:57,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492986888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:57,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:57,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379369365] [2022-10-16 17:18:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:57,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:57,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:57,720 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17:18:57,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:57,741 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2022-10-16 17:18:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-10-16 17:18:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:57,743 INFO L225 Difference]: With dead ends: 52 [2022-10-16 17:18:57,743 INFO L226 Difference]: Without dead ends: 51 [2022-10-16 17:18:57,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 17:18:57,746 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:57,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-16 17:18:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-10-16 17:18:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:18:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2022-10-16 17:18:57,754 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 17 [2022-10-16 17:18:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:57,755 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2022-10-16 17:18:57,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17:18:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2022-10-16 17:18:57,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 17:18:57,756 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:57,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:57,785 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 17:18:57,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:18:57,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash -38946055, now seen corresponding path program 1 times [2022-10-16 17:18:57,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469015306] [2022-10-16 17:18:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:57,999 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:58,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783659169] [2022-10-16 17:18:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:58,005 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 17:18:58,026 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 17:18:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:58,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 17:18:58,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:58,114 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 17:18:58,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469015306] [2022-10-16 17:18:58,118 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783659169] [2022-10-16 17:18:58,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783659169] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:58,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:58,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975503441] [2022-10-16 17:18:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:58,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:58,122 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 17:18:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:58,131 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2022-10-16 17:18:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-10-16 17:18:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:58,133 INFO L225 Difference]: With dead ends: 51 [2022-10-16 17:18:58,134 INFO L226 Difference]: Without dead ends: 50 [2022-10-16 17:18:58,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 17:18:58,136 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:58,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-16 17:18:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-16 17:18:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 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 17:18:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-10-16 17:18:58,144 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 18 [2022-10-16 17:18:58,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:58,145 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-10-16 17:18:58,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 17:18:58,146 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-10-16 17:18:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 17:18:58,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:58,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:58,204 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 17:18:58,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:58,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:58,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash -600681037, now seen corresponding path program 1 times [2022-10-16 17:18:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290968092] [2022-10-16 17:18:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:58,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:58,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020776836] [2022-10-16 17:18:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:58,378 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 17:18:58,393 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 17:18:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:58,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:18:58,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:58,611 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 17:18:58,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290968092] [2022-10-16 17:18:58,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020776836] [2022-10-16 17:18:58,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020776836] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:58,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:58,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:58,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857222617] [2022-10-16 17:18:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:58,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:58,621 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:18:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:58,685 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-10-16 17:18:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-10-16 17:18:58,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:58,687 INFO L225 Difference]: With dead ends: 54 [2022-10-16 17:18:58,687 INFO L226 Difference]: Without dead ends: 53 [2022-10-16 17:18:58,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 17:18:58,688 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:58,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:18:58,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-16 17:18:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-10-16 17:18:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:18:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-10-16 17:18:58,708 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 21 [2022-10-16 17:18:58,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:58,709 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-10-16 17:18:58,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:18:58,710 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-10-16 17:18:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 17:18:58,714 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:58,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:58,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-16 17:18:58,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:58,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1441242883, now seen corresponding path program 1 times [2022-10-16 17:18:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:58,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784314282] [2022-10-16 17:18:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:58,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:58,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432002074] [2022-10-16 17:18:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:58,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:58,948 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 17:18:58,952 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 17:18:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:58,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:18:58,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:59,126 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 17:18:59,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:59,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784314282] [2022-10-16 17:18:59,127 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:59,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432002074] [2022-10-16 17:18:59,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432002074] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:59,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:59,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:59,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003202991] [2022-10-16 17:18:59,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:59,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:59,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:59,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:59,130 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:59,154 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-10-16 17:18:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-16 17:18:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:59,156 INFO L225 Difference]: With dead ends: 51 [2022-10-16 17:18:59,156 INFO L226 Difference]: Without dead ends: 49 [2022-10-16 17:18:59,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 17:18:59,157 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:18:59,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-16 17:18:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-16 17:18:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 48 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 17:18:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-10-16 17:18:59,165 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 22 [2022-10-16 17:18:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:59,165 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-10-16 17:18:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-10-16 17:18:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 17:18:59,166 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:59,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:59,204 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 17:18:59,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:59,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1728856331, now seen corresponding path program 1 times [2022-10-16 17:18:59,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:59,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729741806] [2022-10-16 17:18:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:59,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:59,394 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735980056] [2022-10-16 17:18:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:59,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:59,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:59,396 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 17:18:59,411 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 17:18:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 17:18:59,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:59,468 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 17:18:59,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:18:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:18:59,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729741806] [2022-10-16 17:18:59,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:18:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735980056] [2022-10-16 17:18:59,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735980056] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:18:59,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:18:59,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:18:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957469743] [2022-10-16 17:18:59,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:18:59,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:18:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:18:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:18:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:18:59,490 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:18:59,508 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-10-16 17:18:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:18:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 17:18:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:18:59,510 INFO L225 Difference]: With dead ends: 53 [2022-10-16 17:18:59,510 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 17:18:59,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 17:18:59,512 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 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 17:18:59,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:18:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 17:18:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-10-16 17:18:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 50 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:18:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-10-16 17:18:59,537 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 23 [2022-10-16 17:18:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:18:59,538 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-10-16 17:18:59,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:18:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-10-16 17:18:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 17:18:59,539 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:18:59,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:18:59,574 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 17:18:59,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:59,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:18:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:18:59,742 INFO L85 PathProgramCache]: Analyzing trace with hash 721412106, now seen corresponding path program 1 times [2022-10-16 17:18:59,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:18:59,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416476269] [2022-10-16 17:18:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:59,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:18:59,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:18:59,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447673075] [2022-10-16 17:18:59,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:18:59,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:18:59,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:18:59,756 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 17:18:59,764 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 17:18:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:18:59,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:18:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:18:59,991 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 17:18:59,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:00,099 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 17:19:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416476269] [2022-10-16 17:19:00,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447673075] [2022-10-16 17:19:00,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447673075] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:00,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:00,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:19:00,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339073603] [2022-10-16 17:19:00,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:19:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:19:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:19:00,106 INFO L87 Difference]: Start difference. First operand 51 states and 51 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 17:19:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:00,205 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-10-16 17:19:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:19:00,205 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 17:19:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:00,206 INFO L225 Difference]: With dead ends: 76 [2022-10-16 17:19:00,206 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 17:19:00,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 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 17:19:00,208 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 63 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:19:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 17:19:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2022-10-16 17:19:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:19:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-10-16 17:19:00,215 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 25 [2022-10-16 17:19:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-10-16 17:19:00,215 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 17:19:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-10-16 17:19:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 17:19:00,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:00,217 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:19:00,253 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 17:19:00,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:00,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash 888938849, now seen corresponding path program 1 times [2022-10-16 17:19:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:00,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081790865] [2022-10-16 17:19:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:00,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:00,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986073400] [2022-10-16 17:19:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:00,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:00,446 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 17:19:00,462 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 17:19:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:19:00,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:19:00,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:00,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:00,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:00,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081790865] [2022-10-16 17:19:00,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:00,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986073400] [2022-10-16 17:19:00,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986073400] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:00,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:00,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:19:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563914072] [2022-10-16 17:19:00,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:00,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:19:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:19:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:19:00,763 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:19:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:00,834 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-10-16 17:19:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:19:00,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 17:19:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:00,836 INFO L225 Difference]: With dead ends: 52 [2022-10-16 17:19:00,836 INFO L226 Difference]: Without dead ends: 50 [2022-10-16 17:19:00,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 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 17:19:00,837 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 70 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:00,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 70 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:19:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-16 17:19:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-16 17:19:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 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 17:19:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-10-16 17:19:00,843 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 26 [2022-10-16 17:19:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:00,844 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-10-16 17:19:00,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:19:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-10-16 17:19:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 17:19:00,845 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:00,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:19:00,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-16 17:19:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 17:19:01,060 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 504699405, now seen corresponding path program 1 times [2022-10-16 17:19:01,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:01,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380828204] [2022-10-16 17:19:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:01,072 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:01,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442929621] [2022-10-16 17:19:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:01,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:01,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:01,074 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 17:19:01,079 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 17:19:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:19:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:19:01,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:01,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380828204] [2022-10-16 17:19:01,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442929621] [2022-10-16 17:19:01,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442929621] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:01,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:01,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-16 17:19:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837624796] [2022-10-16 17:19:01,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:19:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:19:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:19:01,246 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 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 17:19:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:01,265 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-10-16 17:19:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:19:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 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) Word has length 38 [2022-10-16 17:19:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:01,267 INFO L225 Difference]: With dead ends: 112 [2022-10-16 17:19:01,267 INFO L226 Difference]: Without dead ends: 111 [2022-10-16 17:19:01,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 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 17:19:01,268 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:01,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 114 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:19:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-16 17:19:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2022-10-16 17:19:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.099009900990099) internal successors, (111), 104 states have internal predecessors, (111), 0 states have call successors, (0), 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 17:19:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-10-16 17:19:01,276 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 38 [2022-10-16 17:19:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:01,277 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-10-16 17:19:01,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 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 17:19:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-10-16 17:19:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 17:19:01,278 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:01,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:19:01,314 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 17:19:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:19:01,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:01,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2060526993, now seen corresponding path program 1 times [2022-10-16 17:19:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819436302] [2022-10-16 17:19:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:01,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:01,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568961667] [2022-10-16 17:19:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:01,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:01,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:01,509 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 17:19:01,516 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 17:19:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:19:01,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:19:01,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:01,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819436302] [2022-10-16 17:19:01,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:01,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568961667] [2022-10-16 17:19:01,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568961667] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:01,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:01,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 17:19:01,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847387069] [2022-10-16 17:19:01,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:19:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:01,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:19:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:19:01,778 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 17:19:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:01,857 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2022-10-16 17:19:01,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:19:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 42 [2022-10-16 17:19:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:01,858 INFO L225 Difference]: With dead ends: 108 [2022-10-16 17:19:01,858 INFO L226 Difference]: Without dead ends: 107 [2022-10-16 17:19:01,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:19:01,860 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 66 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:01,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 83 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:19:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-16 17:19:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-10-16 17:19:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.0792079207920793) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:19:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2022-10-16 17:19:01,867 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 42 [2022-10-16 17:19:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:01,867 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2022-10-16 17:19:01,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 17:19:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2022-10-16 17:19:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 17:19:01,869 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:01,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:19:01,908 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 17:19:02,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:19:02,084 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:02,085 INFO L85 PathProgramCache]: Analyzing trace with hash 186519379, now seen corresponding path program 1 times [2022-10-16 17:19:02,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:02,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747144951] [2022-10-16 17:19:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:02,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:02,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:02,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567166820] [2022-10-16 17:19:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:02,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:02,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:02,100 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 17:19:02,111 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 17:19:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:19:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 17:19:02,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:02,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747144951] [2022-10-16 17:19:02,280 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567166820] [2022-10-16 17:19:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567166820] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:02,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-10-16 17:19:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722037617] [2022-10-16 17:19:02,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:02,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:19:02,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:19:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:19:02,284 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 17:19:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:02,324 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2022-10-16 17:19:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:19:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-10-16 17:19:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:02,325 INFO L225 Difference]: With dead ends: 115 [2022-10-16 17:19:02,325 INFO L226 Difference]: Without dead ends: 114 [2022-10-16 17:19:02,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 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 17:19:02,326 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 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 17:19:02,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:19:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-16 17:19:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-10-16 17:19:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0654205607476634) internal successors, (114), 110 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 17:19:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2022-10-16 17:19:02,332 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 44 [2022-10-16 17:19:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:02,333 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2022-10-16 17:19:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 17:19:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2022-10-16 17:19:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 17:19:02,334 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:02,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-10-16 17:19:02,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-10-16 17:19:02,547 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,SelfDestructingSolverStorable14 [2022-10-16 17:19:02,547 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:02,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1143500568, now seen corresponding path program 2 times [2022-10-16 17:19:02,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:02,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502933160] [2022-10-16 17:19:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:02,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:02,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905725224] [2022-10-16 17:19:02,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:19:02,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:02,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:02,559 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 17:19:02,580 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 17:19:02,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:19:02,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:02,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:19:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:02,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:03,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:03,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502933160] [2022-10-16 17:19:03,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:03,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905725224] [2022-10-16 17:19:03,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905725224] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:03,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:03,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-16 17:19:03,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481477043] [2022-10-16 17:19:03,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:03,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 17:19:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 17:19:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:19:03,039 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:19:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:03,250 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2022-10-16 17:19:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 17:19:03,251 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 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 46 [2022-10-16 17:19:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:03,252 INFO L225 Difference]: With dead ends: 112 [2022-10-16 17:19:03,252 INFO L226 Difference]: Without dead ends: 111 [2022-10-16 17:19:03,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 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 17:19:03,253 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 224 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:03,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 170 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:19:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-16 17:19:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-10-16 17:19:03,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:19:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2022-10-16 17:19:03,260 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 46 [2022-10-16 17:19:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:03,260 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2022-10-16 17:19:03,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:19:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2022-10-16 17:19:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 17:19:03,262 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:03,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-10-16 17:19:03,306 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 17:19:03,475 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,SelfDestructingSolverStorable15 [2022-10-16 17:19:03,476 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -985946415, now seen corresponding path program 2 times [2022-10-16 17:19:03,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:03,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759875867] [2022-10-16 17:19:03,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:03,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:03,491 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:03,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050686798] [2022-10-16 17:19:03,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:19:03,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:03,493 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 17:19:03,515 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 17:19:03,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:19:03,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 17:19:03,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:03,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759875867] [2022-10-16 17:19:04,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050686798] [2022-10-16 17:19:04,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050686798] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:04,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:04,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-10-16 17:19:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489318153] [2022-10-16 17:19:04,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:04,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 17:19:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 17:19:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2022-10-16 17:19:04,081 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 16 states, 15 states have (on average 11.133333333333333) internal successors, (167), 16 states have internal predecessors, (167), 0 states have call successors, (0), 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 17:19:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:04,361 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2022-10-16 17:19:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:19:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.133333333333333) internal successors, (167), 16 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-10-16 17:19:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:04,364 INFO L225 Difference]: With dead ends: 181 [2022-10-16 17:19:04,364 INFO L226 Difference]: Without dead ends: 180 [2022-10-16 17:19:04,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 152 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 17:19:04,366 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 249 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:04,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 202 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:19:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-10-16 17:19:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2022-10-16 17:19:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.0714285714285714) internal successors, (180), 171 states have internal predecessors, (180), 0 states have call successors, (0), 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 17:19:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 180 transitions. [2022-10-16 17:19:04,375 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 180 transitions. Word has length 84 [2022-10-16 17:19:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:04,376 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 180 transitions. [2022-10-16 17:19:04,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.133333333333333) internal successors, (167), 16 states have internal predecessors, (167), 0 states have call successors, (0), 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 17:19:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 180 transitions. [2022-10-16 17:19:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-16 17:19:04,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:04,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-10-16 17:19:04,421 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 17:19:04,591 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,SelfDestructingSolverStorable16 [2022-10-16 17:19:04,592 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:04,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash -559975896, now seen corresponding path program 3 times [2022-10-16 17:19:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:04,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413294434] [2022-10-16 17:19:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:04,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:04,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:04,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110723552] [2022-10-16 17:19:04,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:19:04,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:04,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:04,625 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 17:19:04,631 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 17:19:04,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 17:19:04,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:04,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:19:04,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:05,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:05,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:05,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413294434] [2022-10-16 17:19:05,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:05,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110723552] [2022-10-16 17:19:05,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110723552] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:05,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:05,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-10-16 17:19:05,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549501741] [2022-10-16 17:19:05,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:05,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:19:05,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:05,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:19:05,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:19:05,680 INFO L87 Difference]: Start difference. First operand 172 states and 180 transitions. Second operand has 26 states, 25 states have (on average 7.0) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 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 17:19:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:06,363 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2022-10-16 17:19:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 17:19:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 7.0) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 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 88 [2022-10-16 17:19:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:06,365 INFO L225 Difference]: With dead ends: 183 [2022-10-16 17:19:06,365 INFO L226 Difference]: Without dead ends: 182 [2022-10-16 17:19:06,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 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 17:19:06,367 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 572 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:06,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 272 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:19:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-16 17:19:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2022-10-16 17:19:06,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.058139534883721) internal successors, (182), 175 states have internal predecessors, (182), 0 states have call successors, (0), 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 17:19:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 182 transitions. [2022-10-16 17:19:06,376 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 182 transitions. Word has length 88 [2022-10-16 17:19:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:06,376 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 182 transitions. [2022-10-16 17:19:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 7.0) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 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 17:19:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 182 transitions. [2022-10-16 17:19:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-16 17:19:06,378 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:06,378 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-10-16 17:19:06,416 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 17:19:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:06,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2043701423, now seen corresponding path program 2 times [2022-10-16 17:19:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:06,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571181774] [2022-10-16 17:19:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:06,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:06,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:06,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170960868] [2022-10-16 17:19:06,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:19:06,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:06,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:06,610 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 17:19:06,634 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 17:19:06,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:19:06,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:06,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:19:06,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:06,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:06,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571181774] [2022-10-16 17:19:06,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:06,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170960868] [2022-10-16 17:19:06,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170960868] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:06,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:06,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-10-16 17:19:06,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514594262] [2022-10-16 17:19:06,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:19:06,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:19:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:19:06,954 INFO L87 Difference]: Start difference. First operand 176 states and 182 transitions. Second operand has 12 states, 11 states have (on average 18.272727272727273) internal successors, (201), 12 states have internal predecessors, (201), 0 states have call successors, (0), 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 17:19:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:07,002 INFO L93 Difference]: Finished difference Result 241 states and 246 transitions. [2022-10-16 17:19:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:19:07,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 18.272727272727273) internal successors, (201), 12 states have internal predecessors, (201), 0 states have call successors, (0), 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 101 [2022-10-16 17:19:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:07,004 INFO L225 Difference]: With dead ends: 241 [2022-10-16 17:19:07,005 INFO L226 Difference]: Without dead ends: 240 [2022-10-16 17:19:07,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:19:07,006 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:07,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 246 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:19:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-10-16 17:19:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 231. [2022-10-16 17:19:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 227 states have (on average 1.0572687224669604) internal successors, (240), 230 states have internal predecessors, (240), 0 states have call successors, (0), 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 17:19:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 240 transitions. [2022-10-16 17:19:07,018 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 240 transitions. Word has length 101 [2022-10-16 17:19:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:07,019 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 240 transitions. [2022-10-16 17:19:07,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 18.272727272727273) internal successors, (201), 12 states have internal predecessors, (201), 0 states have call successors, (0), 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 17:19:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 240 transitions. [2022-10-16 17:19:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-16 17:19:07,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:07,020 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-10-16 17:19:07,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-10-16 17:19:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:07,235 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash 240671861, now seen corresponding path program 2 times [2022-10-16 17:19:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:07,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180802313] [2022-10-16 17:19:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:07,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:07,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328923999] [2022-10-16 17:19:07,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:19:07,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:07,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:07,254 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 17:19:07,274 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 17:19:07,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:19:07,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:07,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:19:07,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 120 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:07,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:19:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:07,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:19:07,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180802313] [2022-10-16 17:19:07,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:19:07,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328923999] [2022-10-16 17:19:07,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328923999] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:19:07,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:19:07,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-10-16 17:19:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359061429] [2022-10-16 17:19:07,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:19:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 17:19:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:19:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 17:19:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-10-16 17:19:07,854 INFO L87 Difference]: Start difference. First operand 231 states and 240 transitions. Second operand has 20 states, 19 states have (on average 11.210526315789474) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 17:19:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:19:08,150 INFO L93 Difference]: Finished difference Result 231 states and 240 transitions. [2022-10-16 17:19:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:19:08,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 11.210526315789474) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 107 [2022-10-16 17:19:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:19:08,152 INFO L225 Difference]: With dead ends: 231 [2022-10-16 17:19:08,153 INFO L226 Difference]: Without dead ends: 230 [2022-10-16 17:19:08,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 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 17:19:08,154 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 238 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:19:08,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 255 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:19:08,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-10-16 17:19:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-10-16 17:19:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.0308370044052864) internal successors, (234), 229 states have internal predecessors, (234), 0 states have call successors, (0), 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 17:19:08,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2022-10-16 17:19:08,165 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 107 [2022-10-16 17:19:08,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:19:08,166 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 234 transitions. [2022-10-16 17:19:08,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 11.210526315789474) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 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 17:19:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 234 transitions. [2022-10-16 17:19:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-10-16 17:19:08,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:19:08,168 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2022-10-16 17:19:08,206 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 17:19:08,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:08,384 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-10-16 17:19:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:19:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1946417489, now seen corresponding path program 3 times [2022-10-16 17:19:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:19:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135703977] [2022-10-16 17:19:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:19:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:19:08,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 17:19:08,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908439219] [2022-10-16 17:19:08,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:19:08,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:19:08,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:19:08,408 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 17:19:08,417 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 17:19:08,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-16 17:19:08,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:19:08,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 17:19:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:19:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:19:28,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:21:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:21:09,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:21:09,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135703977] [2022-10-16 17:21:09,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 17:21:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908439219] [2022-10-16 17:21:09,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908439219] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:21:09,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 17:21:09,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-10-16 17:21:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570975449] [2022-10-16 17:21:09,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 17:21:09,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 17:21:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:21:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 17:21:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1856, Unknown=30, NotChecked=0, Total=2070 [2022-10-16 17:21:09,077 INFO L87 Difference]: Start difference. First operand 230 states and 234 transitions. Second operand has 46 states, 45 states have (on average 7.444444444444445) internal successors, (335), 46 states have internal predecessors, (335), 0 states have call successors, (0), 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 17:22:12,068 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 59 DAG size of output: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)